{"id":777,"date":"2020-05-15T08:13:10","date_gmt":"2020-05-15T08:13:10","guid":{"rendered":"https:\/\/www.spelex-i.com\/electronics-expert\/?page_id=777"},"modified":"2023-11-04T17:08:58","modified_gmt":"2023-11-04T17:08:58","slug":"design-support-projects","status":"publish","type":"page","link":"https:\/\/www.spelex-i.com\/electronics-expert\/design-support-projects\/","title":{"rendered":"Projects: Design\/Support"},"content":{"rendered":"<h3>Projects: Design\/Support<\/h3>\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h6>RF Front-End of Digital Communication System (Software-Defined Radio)<\/h6>\n\n\n\n<p>The RF Front-End is a bridge between an analog RF signal and a FPGA for any wireless communication&nbsp;devices and measurement tools. The module performs analog signal processing in both RX\/TX directions. The receiver has a one channel and the transmitter can generate I\/Q channels.<\/p>\n\n\n\n<p>The RX channel performs hardware signal processing: the analog signal is filtered, amplified, being sampled and processed by an analog-to-digital converter(ADC). The prepared digital signals forwarded to the FPGA for digital signal processing (DSP).  In the TX channels: the digital signals from the FPGA are converted to analog signal by digital-to-analog converter(DAC), filtered and amplified.  The clocking signal is genarated by a low-jitter oscillator and synchronized with the FPGA clock.<\/p>\n\n\n\n<p>The module designed to work with <strong><a rel=\"noreferrer noopener\" href=\"https:\/\/www.terasic.com.tw\/cgi-bin\/page\/archive.pl?Language=English&amp;CategoryNo=167&amp;No=836\" target=\"_blank\">DE1-SoC Board<\/a><\/strong> (SoC FPGA+ARM Altera Cyclon V), but it can be connected to any board with FPGA throw  general connectors.<\/p>\n\n\n\n<p>The module consist of: <\/p>\n\n\n\n<ul><li>ADC &#8211; 16bits 100Msps<\/li><li>DAC &#8211; 14bits 275Msps<\/li><li>Low Jitter Clock<\/li><li>Differential Anti Aliasing LC filter(AAF) &#8211; 6 order<\/li><li>Low Pass LC filters(LPF) &#8211; 7 order<\/li><li>Low Noise Amplifier<\/li><li>RF Amplifier<\/li><li>Digital Controlled Attenuators<\/li><li>Low Noise LDOs<\/li><\/ul>\n\n\n\n<div class=\"alignnormal\"><div id=\"metaslider-id-1825\" style=\"width: 100%; margin: 0 auto;\" class=\"ml-slider-3-50-0 metaslider metaslider-flex metaslider-1825 ml-slider ms-theme-default\" role=\"region\" aria-roledescription=\"Slideshow\" aria-label=\"Portfolio_RF_FrontEnd\">\n    <div id=\"metaslider_container_1825\">\n        <div id=\"metaslider_1825\">\n            <ul aria-live=\"polite\" class=\"slides\">\n                <li style=\"display: block; width: 100%;\" class=\"slide-2029 ms-image\" aria-roledescription=\"slide\" aria-label=\"slide-2029\"><img width=\"1024\" height=\"683\" src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_M1_RF_FrontEnd.jpg\" class=\"slider-1825 slide-2029\" alt=\"Hardware Design, Electronic Design, RF, Low Noise Design, SDR, FPGA\" loading=\"lazy\" rel=\"\" title=\"FPGA + RF FrontEnd (SDR) - Low noise RF Front End + Digital Signal Processing (DSP) on FPGA\" srcset=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_M1_RF_FrontEnd.jpg 1024w, https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_M1_RF_FrontEnd-300x200.jpg 300w, https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_M1_RF_FrontEnd-768x512.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/li>\n                <li style=\"display: none; width: 100%;\" class=\"slide-2034 ms-image\" aria-roledescription=\"slide\" aria-label=\"slide-2034\"><img width=\"1024\" height=\"683\" src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_M3_RF_FrontEnd.jpg\" class=\"slider-1825 slide-2034\" alt=\"Hardware Design, Electronic Design, RF, Low Noise Design, SDR, FPGA\" loading=\"lazy\" rel=\"\" title=\"FPGA + RF FrontEnd (SDR) - Low noise RF Front End + Digital Signal Processing (DSP) on FPGA\" srcset=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_M3_RF_FrontEnd.jpg 1024w, https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_M3_RF_FrontEnd-300x200.jpg 300w, https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_M3_RF_FrontEnd-768x512.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/li>\n                <li style=\"display: none; width: 100%;\" class=\"slide-2033 ms-image\" aria-roledescription=\"slide\" aria-label=\"slide-2033\"><img width=\"1024\" height=\"683\" src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_RF_FrontEnd_8.jpg\" class=\"slider-1825 slide-2033\" alt=\"Hardware Design, Electronic Design, RF, Low Noise Design, SDR, FPGA\" loading=\"lazy\" rel=\"\" title=\"FPGA + RF FrontEnd (SDR) - Low noise RF Front End (High Speed ADC , DAC, Filters, ATT, Oscillator, RF amplifier)\" srcset=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_RF_FrontEnd_8.jpg 1024w, https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_RF_FrontEnd_8-300x200.jpg 300w, https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_RF_FrontEnd_8-768x512.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/li>\n                <li style=\"display: none; width: 100%;\" class=\"slide-2030 ms-image\" aria-roledescription=\"slide\" aria-label=\"slide-2030\"><img width=\"1024\" height=\"683\" src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_RF_FrontEnd_7.jpg\" class=\"slider-1825 slide-2030\" alt=\"Hardware Design, Electronic Design, RF, Low Noise Design, SDR, FPGA\" loading=\"lazy\" rel=\"\" title=\"FPGA + RF FrontEnd (SDR) - Low noise RF Front End + Digital Signal Processing (DSP) on FPGA\" srcset=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_RF_FrontEnd_7.jpg 1024w, https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_RF_FrontEnd_7-300x200.jpg 300w, https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_RF_FrontEnd_7-768x512.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/li>\n            <\/ul>\n        <\/div>\n        \n    <\/div>\n<\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h6>Smart House System<\/h6>\n\n\n\n<p>Analog\/Digital Intercom module.<strong> <\/strong>(Integration module of doorbell intercom system)<\/p>\n\n\n\n<p>Set of smart house elements: Outlet control, Light control, Thermostat, Water sensor, Gas sensor, Electricity meter.<\/p>\n\n\n\n<p>The devices consists of:<\/p>\n\n\n\n<ul><li>ARM Cortex-M4<\/li><li>Flash Memory<\/li><li>GSM module<\/li><li>Battery charger<\/li><li>DC-DC convertors<\/li><li>MicroSD<\/li><li>ADC\/DAC<\/li><li>USB, Ethernet, RS485, 1-Wire, Ethernet<\/li><li>AC-DC power supply<\/li><\/ul>\n\n\n\n<div class=\"alignnormal\"><div id=\"metaslider-id-1980\" style=\"width: 100%; margin: 0 auto;\" class=\"ml-slider-3-50-0 metaslider metaslider-flex metaslider-1980 ml-slider ms-theme-default\" role=\"region\" aria-roledescription=\"Slideshow\" aria-label=\"Portfolio_SmartHouse\">\n    <div id=\"metaslider_container_1980\">\n        <div id=\"metaslider_1980\">\n            <ul aria-live=\"polite\" class=\"slides\">\n                <li style=\"display: block; width: 100%;\" class=\"slide-2047 ms-image\" aria-roledescription=\"slide\" aria-label=\"slide-2047\"><img width=\"1024\" height=\"683\" src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_M4_SmartHouse.jpg\" class=\"slider-1980 slide-2047\" alt=\"Hardware Design, Electronic Design, RF, Low Noise Design, SDR, FPGA, MCU, GSM, GPS\" loading=\"lazy\" rel=\"\" title=\"IoT SmartHouse Module - IoT SmartHouse Module (MCU Cortex-M4, MicroSD, GSM module, DC\/DC converters, Ethernet, RS485, 1-Wire, Analog\/Digital Signals, remote sensors)\" srcset=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_M4_SmartHouse.jpg 1024w, https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_M4_SmartHouse-300x200.jpg 300w, https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_M4_SmartHouse-768x512.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/li>\n                <li style=\"display: none; width: 100%;\" class=\"slide-2044 ms-image\" aria-roledescription=\"slide\" aria-label=\"slide-2044\"><img width=\"1024\" height=\"683\" src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_SmartHouse_7.jpg\" class=\"slider-1980 slide-2044\" alt=\"Hardware Design, Electronic Design, RF, Low Noise Design, SDR, FPGA, MCU, GSM, GPS\" loading=\"lazy\" rel=\"\" title=\"IoT SmartHouse Module - IoT SmartHouse Module (MCU Cortex-M4, MicroSD, GSM module, DC\/DC converters, Ethernet, RS485, 1-Wire, Analog\/Digital Signals, remote sensors)\" srcset=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_SmartHouse_7.jpg 1024w, https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_SmartHouse_7-300x200.jpg 300w, https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_SmartHouse_7-768x512.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/li>\n                <li style=\"display: none; width: 100%;\" class=\"slide-2048 ms-image\" aria-roledescription=\"slide\" aria-label=\"slide-2048\"><img width=\"1024\" height=\"683\" src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_SmartHouse_3.jpg\" class=\"slider-1980 slide-2048\" alt=\"Hardware Design, Electronic Design, RF, Low Noise Design, SDR, FPGA, MCU, GSM, GPS\" loading=\"lazy\" rel=\"\" title=\"IoT SmartHouse Module - IoT SmartHouse Module (MCU Cortex-M4, MicroSD, GSM module, DC\/DC converters, Ethernet, RS485, 1-Wire, Analog\/Digital Signals, remote sensors)\" srcset=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_SmartHouse_3.jpg 1024w, https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_SmartHouse_3-300x200.jpg 300w, https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_SmartHouse_3-768x512.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/li>\n                <li style=\"display: none; width: 100%;\" class=\"slide-2045 ms-image\" aria-roledescription=\"slide\" aria-label=\"slide-2045\"><img width=\"1024\" height=\"683\" src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_SmartHouse_6.jpg\" class=\"slider-1980 slide-2045\" alt=\"Hardware Design, Electronic Design, RF, Low Noise Design, SDR, FPGA, MCU, GSM, GPS\" loading=\"lazy\" rel=\"\" title=\"Power Suplly of IoT SmartHouse Module - Power supply\/Accumulator charger (12V\/7A)\" srcset=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_SmartHouse_6.jpg 1024w, https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_SmartHouse_6-300x200.jpg 300w, https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/uploads\/2020\/07\/SPELEX_SmartHouse_6-768x512.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/li>\n            <\/ul>\n        <\/div>\n        \n    <\/div>\n<\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h6>MERLIN (Methane Remote Sensing Lidar Mission)<\/h6>\n\n\n\n<p>FRU &nbsp;(Frequency Reference Unit) is a module of a satellite with a scientific objective to measure the global distribution of the gas methane. The unit provides an optical\/electrical frequency stabilization of the reference laser diode with respect to the methane gas absorption feature. <\/p>\n\n\n\n<p>The unit consists of methane gas cell, laser diodes, photo receivers and high precision RADHard electronics: <\/p>\n\n\n\n<ul><li>Low Noise Laser Diode Driver<\/li><li>TEC Driver,  CMOS (CCD) Sensor + High Speed Analog Font End<\/li><li>ADCs<\/li><li>DACs<\/li><li> FPGA  <\/li><li>DC\/DC converters<\/li><\/ul>\n\n\n\n<p><a rel=\"noreferrer noopener\" href=\"https:\/\/merlin.cnes.fr\/en\/MERLIN\/index.htm\" target=\"_blank\">Read more &#8230;<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h6>WAVELENGTH DIVISION MULTIPLEXING (WDM) is a Laser Communication Terminal between Satellites<\/h6>\n\n\n\n<p>Optical terminals of future telecommunication satellites and constellations will require that the optical links achieve a terabyte data rate capability.<\/p>\n\n\n\n<p>The unit consists of:<\/p>\n\n\n\n<ul><li> Optical BPSK Modulator\/Demodulator (Optical PLL)<\/li><li>Low Noise RF Amplifiers (6GHz)<\/li><li>Phase Detector<\/li><li>RF Synthesizer<\/li><li>Low Pass Filters<\/li><li>Fast Comparators (6GHz)<\/li><li>Low Noise Photo receiver<\/li><li>Low Noise Laser Diode Driver<\/li><li>TEC Driver<\/li><li>Lock-In Amplifier<\/li><\/ul>\n\n\n\n<p><a rel=\"noreferrer noopener\" href=\"https:\/\/artes.esa.int\/funding\/optical-multiplexing-wavelength-division-multiplexing-wdm-optical-communication-terminals-scylight-sl018\" target=\"_blank\">Read more &#8230;<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h6>ICARUS (International Cooperation for Animal Research Using Space) is a global space monitoring system<\/h6>\n\n\n\n<p>ICARUS is a global collaboration of animal scientists to establish a novel satellite based infrastructure for earth observation of small objects such as migratory birds, bats or sea turtles. It consists of space and ground-deployed elements. The space element (International Space Station) is used as relay for the radio frequency communication link between animal tags and the Operations Center.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>The system is installed on the ISS (International Space Station) electronics: <\/p>\n\n\n\n<ul><li>On board computer<\/li><li>SDR RF transceivers<\/li><li>FPGAs<\/li><li>NAND FLASH<\/li><li>SDRAMs<\/li><li>PMIC<\/li><li>High Speed ADCs and DACs<\/li><li>Low Noise Amplifiers<\/li><li>Power RF Amplifiers<\/li><li>Antennas<\/li><\/ul>\n\n\n\n<p><a rel=\"noreferrer noopener\" href=\"https:\/\/www.icarus.mpg.de\/4146\/technology\" target=\"_blank\">Read more &#8230;<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h6>ICARUS Animal Tag<\/h6>\n\n\n\n<p>The Animal Tag is a tiny device (5 grams and a volume of approximately 2 cm3) that collects science measurements: GPS position, acceleration, magnetometer values, pressure, temperature and provides the capability of communicating up to 800 km with the ICARUS equipment at the ISS. The unit is developed using cutting edge electronic solution:<\/p>\n\n\n\n<ul><li> Solar Cell<\/li><li>Energy Harvesting MPPT charger<\/li><li>Fuel Gauge<\/li><li>MEMS Sensors<\/li><li>ARM Cortex-M4<\/li><li>FLASH<\/li><li>High Speed ADC\/DAC<\/li><li>FPGA<\/li><li>GPS receiver<\/li><li>RF Transceiver <\/li><li>LNA <\/li><li>RF Power Amplifier<\/li><\/ul>\n\n\n\n<p><a rel=\"noreferrer noopener\" href=\"https:\/\/www.spacetech-i.com\/products\/end-to-end-systems\/icarus\" target=\"_blank\">Read more (about device) &#8230;<\/a><\/p>\n\n\n\n<p><a rel=\"noreferrer noopener\" href=\"https:\/\/www.icarus.mpg.de\/28874\/sensor-animals-tracking\" target=\"_blank\">Read more (about project) &#8230;<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h6>Unattended Secure Payment Terminal (UX301, UX310)<\/h6>\n\n\n\n<p>The UX 300 is the central controller system with an integrated hybrid card reader for magnetic and chip cards as well as contactless payment with NFC technology.<\/p>\n\n\n\n<p><a rel=\"noreferrer noopener\" href=\"http:\/\/www.verifone.de\/products\/self-service\/ux-301\/\" target=\"_blank\">Read more &#8230;<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-dots\"\/>\n\n\n\n<h6>Portable Secure Payment Terminal (H5000)<\/h6>\n\n\n\n<p>The H5000 is the portable payment terminal with an integrated hybrid card reader for magnetic and chip cards as well as contactless payment with NFC technology, printer and touchscreen.<\/p>\n\n\n\n<p><a rel=\"noreferrer noopener\" href=\"https:\/\/www.verifone.com\/de\/de\/devices\/stationaer-pin-pad\/h5000\" target=\"_blank\">Read more &#8230;<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-dots\"\/>\n\n\n\n<p>The devices consists of:<\/p>\n\n\n\n<ul><li> ARM (SoC)<\/li><li>SDRAM<\/li><li>NAND FLASH<\/li><li>PMIC<\/li><li>RFID (NFC)<\/li><li>Ethernet, USB, MDB, ISO7816 Smart card<\/li><li>Magnetic strip<\/li><li>Motor Driver<\/li><\/ul>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h6>Wireless Security Alarm System \/ Smart House System<\/h6>\n\n\n\n<p>The main module monitors and controls network devices by wireless protocol. <\/p>\n\n\n\n<p>Battery Powered Wireless penetration motion and door sensors.<\/p>\n\n\n\n<p>The devices consists of: <\/p>\n\n\n\n<ul><li>ARM Cortex-M3<\/li><li>Flash Memory<\/li><li>USB, Ethernet<\/li><li>GSM module<\/li><li>RF transceiver<\/li><li>DC-DC convertors<\/li><\/ul>\n\n\n\n<p><a rel=\"noreferrer noopener\" href=\"https:\/\/ajax.systems\/products\/\" target=\"_blank\">Read more &#8230;<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h6>Industrial PID controller for HVAC Systems<\/h6>\n\n\n\n<p>ComfortW is a PID controller for heating, ventilation and air conditioning (HVAC) systems to maintain occupants&#8217; thermal comfort and energy efficiency. The controller has analogue and digital inputs to measure a temperature, humidity or pressure. Analog and digital outputs control the devices such as actuators and solenoid valves. Digital PWM outputs control the power opto-triacs for Electrical Heaters and Freon units.<\/p>\n\n\n\n<ul><li>Analog Inputs: PT100, PT1000, NTC, 0-10V, 4-20mA<\/li><li>Analog Outputs: 0-10V, 4-20mA<\/li><li>Digital Inputs: Opto-Isolated<\/li><li>Digital outputs: Opto-Triac, Relays<\/li><li>Interfaces: RS485, Ethernet, 1-Wire<\/li><\/ul>\n\n\n\n<p><a rel=\"noreferrer noopener\" href=\"http:\/\/comfort-service.com\" target=\"_blank\">Read more &#8230;<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h6>Isolated Industrial USB\/RS485 converter<\/h6>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h6>Human muscle control electronics<\/h6>\n\n\n\n<p>Low noise signal processing electronics for acquiring information from body sensors.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h6>Automotive Alarm\/Control System<\/h6>\n\n\n\n<p> Penetration Sensors; Board Telemetry, Wireless IR and GSM control.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h6>Mobile UHF Radio-Telephone System (Full-Duplex)<\/h6>\n\n\n\n<p>It is arranged system for speaking and listening at a mobile station which has an access to the general telephone network.<\/p>\n\n\n\n<ul><li>Double Conversion UHF Receiver<\/li><li>UHF Transmitter<\/li><li>RF Synthesizer<\/li><li>RF Amplifier<\/li><\/ul>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h6>Shortwave SSB\/CW Transceiver (Half-Duplex) 1.8 &#8211; 30MHz<\/h6>\n\n\n\n<ul><li>Single Conversion RF Transceiver<\/li><li>RF Synthesizer<\/li><li>RF Amplifier<\/li><\/ul>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h6>Automotive AM\/FM Radio station (Half-Duplex) 144MHz<\/h6>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-dots\"\/>\n\n\n\n<h6>Handheld AM\/FM Radio station (Half-Duplex) 27MHz<\/h6>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-dots\"\/>\n\n\n\n<h6>Portable CW Transceiver (Half-Duplex) 7 &#8211; 21 MHz<\/h6>\n\n\n\n<ul><li>Double Conversion RF Tranceiver<\/li><li>Synthesizer<\/li><li>RF Amplifier<\/li><\/ul>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n\r\n<div id=\"sb_instagram\"  class=\"sbi sbi_mob_col_1 sbi_tab_col_2 sbi_col_5 sbi_width_resp sbi_disable_mobile\" style=\"padding-bottom: 2px;width: 100%;\" data-feedid=\"sbi_17841419884156099rdm#60\"  data-res=\"auto\" data-cols=\"5\" data-colsmobile=\"1\" data-colstablet=\"2\" data-num=\"60\" data-nummobile=\"\" data-shortcode-atts=\"{&quot;cols&quot;:&quot;5&quot;,&quot;num&quot;:&quot;60&quot;,&quot;sortby&quot;:&quot;random&quot;,&quot;imageres&quot;:&quot;auto&quot;}\"  data-postid=\"777\" data-locatornonce=\"67c7a686b5\" data-sbi-flags=\"favorLocal,gdpr\">\r\n\t\r\n    <div id=\"sbi_images\"  style=\"padding: 1px;\">\r\n\t\t<div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17966633543619662\" data-date=\"1717172252\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/C7o6YxptmMu\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/447040589_1055731109439048_136232728490393277_n.heic?stp=dst-jpg_tt6&#038;_nc_cat=103&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=_7PemWtGyvEQ7kNvgHTO1zb&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDh9gYtE8i2ln9lbToBFcU_iJgQ4QuvXtIF8U1tr9nLoQ&#038;oe=675692CA\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/447040589_1055731109439048_136232728490393277_n.heic?stp=dst-jpg_tt6&amp;_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=_7PemWtGyvEQ7kNvgHTO1zb&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDh9gYtE8i2ln9lbToBFcU_iJgQ4QuvXtIF8U1tr9nLoQ&amp;oe=675692CA&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/447040589_1055731109439048_136232728490393277_n.heic?stp=dst-jpg_tt6&amp;_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=_7PemWtGyvEQ7kNvgHTO1zb&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDh9gYtE8i2ln9lbToBFcU_iJgQ4QuvXtIF8U1tr9nLoQ&amp;oe=675692CA&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/447040589_1055731109439048_136232728490393277_n.heic?stp=dst-jpg_tt6&amp;_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=_7PemWtGyvEQ7kNvgHTO1zb&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDh9gYtE8i2ln9lbToBFcU_iJgQ4QuvXtIF8U1tr9nLoQ&amp;oe=675692CA&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/447040589_1055731109439048_136232728490393277_n.heic?stp=dst-jpg_tt6&amp;_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=_7PemWtGyvEQ7kNvgHTO1zb&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDh9gYtE8i2ln9lbToBFcU_iJgQ4QuvXtIF8U1tr9nLoQ&amp;oe=675692CA&quot;}\">\r\n            <span class=\"sbi-screenreader\">A very interesting new solution from Murata...\n\nAn<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"A very interesting new solution from Murata...\n\nAn L Cancel Transformer (LCT) is a component that greatly suppresses noise in high-frequency bands by reducing the ESL generated inside capacitors and the ESL generated in boards when used together with a decoupling capacitor. The L Cancel Transformer (LCT) is outstandingly effective in suppressing harmonic noise of several MHz to 1 GHz in power lines caused by DC-DC converters and other components.\r\n\r\nAn L Cancel Capacitor (LCT) can improve the noise elimination performance of decoupling capacitors. Accordingly, noise suppression becomes possible with a smaller number of MLCCs. It also becomes possible to cut the number of small-capacity MLCCs and other components to reduce harmonic noise.\n.\n.\n.\n#spelex\n#murata\n#powersupply\n#powerintegrity\n#pdn #powerdistributionnetwork\n#emc #emi #emv #electromagneticcompatibility \n#emitroubleshooting\n#lowpassfilter #damping #dcdcconverter\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_18190495171167193\" data-date=\"1651946187\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CdRBioQrfMt\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/280181143_684349132675306_3348380978356431205_n.webp?stp=dst-jpg_tt6&#038;_nc_cat=110&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=eJRKNLSyTPwQ7kNvgHXUdec&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDuyzgPP8l-4kkUGApeVexn9W3aIPq4-DjhyoftyEmd4w&#038;oe=67567077\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280181143_684349132675306_3348380978356431205_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=eJRKNLSyTPwQ7kNvgHXUdec&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDuyzgPP8l-4kkUGApeVexn9W3aIPq4-DjhyoftyEmd4w&amp;oe=67567077&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280181143_684349132675306_3348380978356431205_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=eJRKNLSyTPwQ7kNvgHXUdec&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDuyzgPP8l-4kkUGApeVexn9W3aIPq4-DjhyoftyEmd4w&amp;oe=67567077&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280181143_684349132675306_3348380978356431205_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=eJRKNLSyTPwQ7kNvgHXUdec&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDuyzgPP8l-4kkUGApeVexn9W3aIPq4-DjhyoftyEmd4w&amp;oe=67567077&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280181143_684349132675306_3348380978356431205_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=eJRKNLSyTPwQ7kNvgHXUdec&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDuyzgPP8l-4kkUGApeVexn9W3aIPq4-DjhyoftyEmd4w&amp;oe=67567077&quot;}\">\r\n            <span class=\"sbi-screenreader\">These are useful pictures that explain how electri<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"These are useful pictures that explain how electric return current flows at different frequencies (1KHz, 50KHz, 1MHz). \n\nThe current returns to the source through the least impedance path. The impedance value depends on the frequency. So the return current can flow into the absolutely different directions on the PCB.\n\nAs a result, critical signals can be corrupted by electromagnetic interference (EMI) and EMC problems can occur in the system.\n\nTherefore, when designing or reviewing a PCB, try to think about the possible return current paths for each signal.\n\nThe pictures are from Design Tips 2008.\nBruce Archambeault\nResistive vs. Inductive Return Current Paths\n.\n.\n.\n#spelex #electronicsengineering #emcconsulting\n#emcconcept #electronicdesign #emitroubleshooting #pcb #pcbdesign\n#analogelectronics #printedcircuitboard\n#emc #emv #emi #digitalelectronics #electromagneticcompatibility\n#grounding #groundingconcepts #signalIntegrity #powerintegrity #returncurrentpath\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_video sbi_new sbi_transition\" id=\"sbi_17949756709711688\" data-date=\"1644152968\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/tv\/CZoxGQiAQNI\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/273462966_616655422770482_7349039700733966796_n.jpg?_nc_cat=109&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=bHo3qfTYkYwQ7kNvgELBXj3&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDkwt5BWTCsjaG4OfcioCCqO1M0TbZRSwZzjd1xynoUOg&#038;oe=67566F97\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273462966_616655422770482_7349039700733966796_n.jpg?_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=bHo3qfTYkYwQ7kNvgELBXj3&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDkwt5BWTCsjaG4OfcioCCqO1M0TbZRSwZzjd1xynoUOg&amp;oe=67566F97&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273462966_616655422770482_7349039700733966796_n.jpg?_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=bHo3qfTYkYwQ7kNvgELBXj3&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDkwt5BWTCsjaG4OfcioCCqO1M0TbZRSwZzjd1xynoUOg&amp;oe=67566F97&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273462966_616655422770482_7349039700733966796_n.jpg?_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=bHo3qfTYkYwQ7kNvgELBXj3&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDkwt5BWTCsjaG4OfcioCCqO1M0TbZRSwZzjd1xynoUOg&amp;oe=67566F97&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273462966_616655422770482_7349039700733966796_n.jpg?_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=bHo3qfTYkYwQ7kNvgELBXj3&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDkwt5BWTCsjaG4OfcioCCqO1M0TbZRSwZzjd1xynoUOg&amp;oe=67566F97&quot;}\">\r\n            <span class=\"sbi-screenreader\">The VCXO on my PCB works and can be received by a <\/span>\r\n            \t        <svg style=\"color: rgba(255,255,255,1)\" class=\"svg-inline--fa fa-play fa-w-14 sbi_playbtn\" aria-label=\"Play\" aria-hidden=\"true\" data-fa-processed=\"\" data-prefix=\"fa\" data-icon=\"play\" role=\"presentation\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\"><path fill=\"currentColor\" d=\"M424.4 214.7L72.4 6.6C43.8-10.3 0 6.1 0 47.9V464c0 37.5 40.7 60.1 72.4 41.3l352-208c31.4-18.5 31.5-64.1 0-82.6z\"><\/path><\/svg>            <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"The VCXO on my PCB works and can be received by a supported SDR Play receiver.\n\n------------------\u2010-----------------------\nThe project is an RF Analog Front End, which will be connected to an #FPGA board \n(See my previous posts)\n------------------------------------------\n.\n.\n.\n#spelex #electronicsprojects #hardware #electronicdesign #circuitboard #pcb #pcbdesign #radioelectronics \n#analogelectronics #digitalelectronics #sdr\n#rf #analogfrontend #sdrplay\n#electronicmeasurement #vcxo\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17894140583531644\" data-date=\"1651648468\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CdIJr-gthiD\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/279679667_1003623320264883_6154332080351102891_n.webp?stp=dst-jpg_tt6&#038;_nc_cat=101&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=zqsAE0OD3XUQ7kNvgGR8EXA&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYBu6mfutKykZBtqrqiR9SvrRDGQTCtaffVeypucLNs-dQ&#038;oe=67567E56\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/279679667_1003623320264883_6154332080351102891_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=zqsAE0OD3XUQ7kNvgGR8EXA&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBu6mfutKykZBtqrqiR9SvrRDGQTCtaffVeypucLNs-dQ&amp;oe=67567E56&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/279679667_1003623320264883_6154332080351102891_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=zqsAE0OD3XUQ7kNvgGR8EXA&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBu6mfutKykZBtqrqiR9SvrRDGQTCtaffVeypucLNs-dQ&amp;oe=67567E56&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/279679667_1003623320264883_6154332080351102891_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=zqsAE0OD3XUQ7kNvgGR8EXA&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBu6mfutKykZBtqrqiR9SvrRDGQTCtaffVeypucLNs-dQ&amp;oe=67567E56&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/279679667_1003623320264883_6154332080351102891_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=zqsAE0OD3XUQ7kNvgGR8EXA&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBu6mfutKykZBtqrqiR9SvrRDGQTCtaffVeypucLNs-dQ&amp;oe=67567E56&quot;}\">\r\n            <span class=\"sbi-screenreader\">The correct concept of grounding in a system or on<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"The correct concept of grounding in a system or on a printed circuit board (PCB) is quite a challenge.\n\nGround splitting is a tradeoff between achieving system performance, a level of complexity and  levels of Emission and Immunity (EMC).\n\nWhether you are designing your electronics with a solid ground or a split ground, it is important to understand where the main and return current flows (in the range - from DC to RF). \n\nVery oft, it is almost impossible to change the location of  interface\/backplane connectors,  power components, etc. These reason push the developer to think about splitting ground plane.\n\nI can say about my experince:\n* For a simple, low power, PCB with MCU and 8-10bits ADC + display normally you don&#039;t need the GND splitting. (Home automation, simple IoT, etc.)\n* Solid\/Splitting ground must be carefully designed for mixed signal electronics with digital, low noise analog, and DC\/DC components. (Space electronics, IoT with RF, high-precise instrumental electronics, RF software defined radio - SDR). For Power electronics with analog readout and DSP shaping system. (Power drivers and inverters). \n\nComplex reliable electronics like Space\/Automitive\/Defence requared very deep worst case analisys (WCA). In turn, it become very difficult to achieve requirements without splitting the ground.\n\nProper ground separation and placements of stitching capacitors helped me to reduce interference (EMI) by 60 dB. These disturbances reduced significantly the LIDAR system performance. The electromagnetic interference was originated from the FPGA interconnect and affected the low noise laser drivers. As a result of the EMI reduction, the laser line width(phase noise) was significantly reduced to the requared system level. The Radiation Emission level after the changes were also complient with the EMC standards.\n\nHere are some my photos from tests and measurements of the device after making changes to the PCB. \n.\n.\n.\n#spelex #emcconsulting\n#emcconcept #emitroubleshooting #pcb #pcbdesign\n#analogelectronics\n#emc #emv #emi #electromagneticcompatibility\n#grounding #groundloop #groundingconcept #signalIntegrity #powerintegrity\n\n@wedontknowzipcodes\n@juanmicuesta96\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17918768504462244\" data-date=\"1650786395\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CcudadSNHiq\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/278935386_680181279977232_3366262283404595260_n.webp?stp=dst-jpg_tt6&#038;_nc_cat=105&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=p86JpAIudekQ7kNvgHljcgF&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYCMp9XMVxV2awPkmY6OqmK0WrcSNOXKsdQ80SeoZMtKBw&#038;oe=67569D49\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278935386_680181279977232_3366262283404595260_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=p86JpAIudekQ7kNvgHljcgF&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCMp9XMVxV2awPkmY6OqmK0WrcSNOXKsdQ80SeoZMtKBw&amp;oe=67569D49&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278935386_680181279977232_3366262283404595260_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=p86JpAIudekQ7kNvgHljcgF&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCMp9XMVxV2awPkmY6OqmK0WrcSNOXKsdQ80SeoZMtKBw&amp;oe=67569D49&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278935386_680181279977232_3366262283404595260_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=p86JpAIudekQ7kNvgHljcgF&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCMp9XMVxV2awPkmY6OqmK0WrcSNOXKsdQ80SeoZMtKBw&amp;oe=67569D49&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278935386_680181279977232_3366262283404595260_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=p86JpAIudekQ7kNvgHljcgF&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCMp9XMVxV2awPkmY6OqmK0WrcSNOXKsdQ80SeoZMtKBw&amp;oe=67569D49&quot;}\">\r\n            <span class=\"sbi-screenreader\">A new EMI\/EMC issue has been resolved during EMI t<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"A new EMI\/EMC issue has been resolved during EMI troubleshooting.\nThe list with typical resolved EMI\/EMC problems is on the website: www.spelex-i.com\n\nPROJECT: \nIndustrial Controller.\n\nDESCRIPTION OF THE PROBLEM: \nThe pre-compliance test for EMI Radiated Emission failed.\n\nSOURCE OF THE PROBLEM:\nSignal Integrity problem, which caused the EMI problem. Insufficiently thought out the #PCB design of the High-Speed Ethernet controller and ground.\n.\n.\n.\n#spelex\n#emc #emv #emi #emcconsulting\n#emcconcept #radiatedemission\n#electromagneticcompatibility\n#emitroubleshooting\n#ethetnet #industrialcontrol \n#highspeedsignal\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_video sbi_new sbi_transition\" id=\"sbi_17940553060773043\" data-date=\"1641587589\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/reel\/CYcT6M3q8js\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/271398433_4859512467402091_8689664558924429835_n.jpg?_nc_cat=111&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=GzEaPIkYg68Q7kNvgGNYY1X&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYBqlaa-k-GI_tCCgY7T4biD3zvnESbaeTVHwSvcFX5qxg&#038;oe=6756702A\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271398433_4859512467402091_8689664558924429835_n.jpg?_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=GzEaPIkYg68Q7kNvgGNYY1X&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBqlaa-k-GI_tCCgY7T4biD3zvnESbaeTVHwSvcFX5qxg&amp;oe=6756702A&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271398433_4859512467402091_8689664558924429835_n.jpg?_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=GzEaPIkYg68Q7kNvgGNYY1X&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBqlaa-k-GI_tCCgY7T4biD3zvnESbaeTVHwSvcFX5qxg&amp;oe=6756702A&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271398433_4859512467402091_8689664558924429835_n.jpg?_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=GzEaPIkYg68Q7kNvgGNYY1X&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBqlaa-k-GI_tCCgY7T4biD3zvnESbaeTVHwSvcFX5qxg&amp;oe=6756702A&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271398433_4859512467402091_8689664558924429835_n.jpg?_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=GzEaPIkYg68Q7kNvgGNYY1X&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBqlaa-k-GI_tCCgY7T4biD3zvnESbaeTVHwSvcFX5qxg&amp;oe=6756702A&quot;}\">\r\n            <span class=\"sbi-screenreader\">I have finished refurbishing of the linear power s<\/span>\r\n            \t        <svg style=\"color: rgba(255,255,255,1)\" class=\"svg-inline--fa fa-play fa-w-14 sbi_playbtn\" aria-label=\"Play\" aria-hidden=\"true\" data-fa-processed=\"\" data-prefix=\"fa\" data-icon=\"play\" role=\"presentation\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\"><path fill=\"currentColor\" d=\"M424.4 214.7L72.4 6.6C43.8-10.3 0 6.1 0 47.9V464c0 37.5 40.7 60.1 72.4 41.3l352-208c31.4-18.5 31.5-64.1 0-82.6z\"><\/path><\/svg>            <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"I have finished refurbishing of the linear power supply (5v\/1A), that I will use to power analog RF front end. This is an old power supply was made by #AIWA in Japan. I have installed an additional voltage regulator, which acts as a good ripple filter. This is a famous #LM317, that has an excellent ripple rejection ratio of more than 60db at 100 Herz. As I showed in my previous post, the ripples at the output of the initial voltage regulator were 150mV (1A\/7V). This is to much for the sensitive electronics. #spelex #powersupply #linearpower #hardware\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17952679460247815\" data-date=\"1667854275\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CkrHz0FrXMy\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/314526100_853608375664181_107643947609615491_n.webp?stp=dst-jpg&#038;_nc_cat=105&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=ctTweTB9f6oQ7kNvgG0CI0h&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDe680pXeee4_d0gO6haYTPEhYobpZarkNoOeBGuqj9gw&#038;oe=6756A31E\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/314526100_853608375664181_107643947609615491_n.webp?stp=dst-jpg&amp;_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ctTweTB9f6oQ7kNvgG0CI0h&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDe680pXeee4_d0gO6haYTPEhYobpZarkNoOeBGuqj9gw&amp;oe=6756A31E&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/314526100_853608375664181_107643947609615491_n.webp?stp=dst-jpg&amp;_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ctTweTB9f6oQ7kNvgG0CI0h&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDe680pXeee4_d0gO6haYTPEhYobpZarkNoOeBGuqj9gw&amp;oe=6756A31E&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/314526100_853608375664181_107643947609615491_n.webp?stp=dst-jpg&amp;_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ctTweTB9f6oQ7kNvgG0CI0h&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDe680pXeee4_d0gO6haYTPEhYobpZarkNoOeBGuqj9gw&amp;oe=6756A31E&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/314526100_853608375664181_107643947609615491_n.webp?stp=dst-jpg&amp;_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ctTweTB9f6oQ7kNvgG0CI0h&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDe680pXeee4_d0gO6haYTPEhYobpZarkNoOeBGuqj9gw&amp;oe=6756A31E&quot;}\">\r\n            <span class=\"sbi-screenreader\">This is an example of protecting the analog output<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"This is an example of protecting the analog outputs of industrial controllers. \nThe circuit has EMC, ESD, overvoltage and fault voltage tollerance protection.\n\nThe example taken from #texasinstruments application note.\n.\n.\n.\n#spelex #emi #emc \n#emitroubleshooting\n#electromagneticcompatibility \n#emcconsulting #electricalprotection\n#industrialdesign #tvs #esd\n#automation #industrialcontroller #fault\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_video sbi_new sbi_transition\" id=\"sbi_17962548869022954\" data-date=\"1667308106\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/reel\/Cka1GabAhE4\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.36329-15\/313694641_2986895851456636_3670004110107375824_n.jpg?_nc_cat=100&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=F7k0SmK47MEQ7kNvgGrdAfy&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYBSBaPSpOQjtXxAbaCPVoenD46C49MXzlK-c6-CR89FNg&#038;oe=675693A0\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/313694641_2986895851456636_3670004110107375824_n.jpg?_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=F7k0SmK47MEQ7kNvgGrdAfy&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBSBaPSpOQjtXxAbaCPVoenD46C49MXzlK-c6-CR89FNg&amp;oe=675693A0&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/313694641_2986895851456636_3670004110107375824_n.jpg?_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=F7k0SmK47MEQ7kNvgGrdAfy&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBSBaPSpOQjtXxAbaCPVoenD46C49MXzlK-c6-CR89FNg&amp;oe=675693A0&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/313694641_2986895851456636_3670004110107375824_n.jpg?_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=F7k0SmK47MEQ7kNvgGrdAfy&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBSBaPSpOQjtXxAbaCPVoenD46C49MXzlK-c6-CR89FNg&amp;oe=675693A0&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/313694641_2986895851456636_3670004110107375824_n.jpg?_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=F7k0SmK47MEQ7kNvgGrdAfy&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBSBaPSpOQjtXxAbaCPVoenD46C49MXzlK-c6-CR89FNg&amp;oe=675693A0&quot;}\">\r\n            <span class=\"sbi-screenreader\">This is a Linux(LXDE) launch of my Software Define<\/span>\r\n            \t        <svg style=\"color: rgba(255,255,255,1)\" class=\"svg-inline--fa fa-play fa-w-14 sbi_playbtn\" aria-label=\"Play\" aria-hidden=\"true\" data-fa-processed=\"\" data-prefix=\"fa\" data-icon=\"play\" role=\"presentation\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\"><path fill=\"currentColor\" d=\"M424.4 214.7L72.4 6.6C43.8-10.3 0 6.1 0 47.9V464c0 37.5 40.7 60.1 72.4 41.3l352-208c31.4-18.5 31.5-64.1 0-82.6z\"><\/path><\/svg>            <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"This is a Linux(LXDE) launch of my Software Defined Radio (SDR) project. Before the launch is shown the process of programming the bridge between FPGA and ARM Cortex-A9 (SoC Cyclone V). The FPGA is used because the video decoder chip (VGA) is connected to the FPGA pins instead of the ARM.\r\n\r\nThis operation system will be used to run FFT anlysis application and display a spectrum and a waterfall of the received signal.\n.\n.\n.\n#spelex #electronicsprojects\n#circuitboard #pcb #pcbdesign #altium\n#altiumdesigner #fpga #Intel #terasic\n#radioelectronics #de1soc #cyclone\n#analogelectronics #digitalelectronics #rf #trx #tranceiver #receiver\n#rfdesign #sdr #highspeedcircuit\n#hamradio #radioamateur\n#printedcircuitboard #lxde #linux #vga #fft\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_18208952869201437\" data-date=\"1671380311\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CmUNMMZrkEg\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/320237776_849415839635808_5985114290791471281_n.webp?stp=dst-jpg_tt6&#038;_nc_cat=109&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=YSRQ7UonoKEQ7kNvgEQspc9&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDDOWkT0tf6GnxkTDZVV1vjStfZuHb0AZ9uHvRW0cqdkg&#038;oe=67569EDC\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/320237776_849415839635808_5985114290791471281_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=YSRQ7UonoKEQ7kNvgEQspc9&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDDOWkT0tf6GnxkTDZVV1vjStfZuHb0AZ9uHvRW0cqdkg&amp;oe=67569EDC&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/320237776_849415839635808_5985114290791471281_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=YSRQ7UonoKEQ7kNvgEQspc9&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDDOWkT0tf6GnxkTDZVV1vjStfZuHb0AZ9uHvRW0cqdkg&amp;oe=67569EDC&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/320237776_849415839635808_5985114290791471281_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=YSRQ7UonoKEQ7kNvgEQspc9&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDDOWkT0tf6GnxkTDZVV1vjStfZuHb0AZ9uHvRW0cqdkg&amp;oe=67569EDC&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/320237776_849415839635808_5985114290791471281_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=YSRQ7UonoKEQ7kNvgEQspc9&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDDOWkT0tf6GnxkTDZVV1vjStfZuHb0AZ9uHvRW0cqdkg&amp;oe=67569EDC&quot;}\">\r\n            <span class=\"sbi-screenreader\">A new EMI\/EMC issue has been resolved during EMI t<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"A new EMI\/EMC issue has been resolved during EMI troubleshooting.\r\n\r\nPROJECT: \r\nTiny IoT Device\r\n\r\n\r\nDESCRIPTION OF THE PROBLEM: \r\nThe device was intermittent and did not consistently work as expected. This was visible when people moved near the device.\r\n\r\n\r\nSOURCE OF THE PROBLEM:\r\nESD Immunity was poor. Moving people generate electrostatic discharge that causes unwanted disturbances (level upset) in the unprotected circuit.\r\n.\r\n.\r\n.\r\n#spelex\r\n#emc #emv #emi #emcconsulting\r\n#emcconcept  #groundingconcept\r\n#electromagneticcompatibility\r\n#emitroubleshooting #grounding\r\n#highspeedsignal #iot #esd #emc #electromagneticcompatibility \n#emv\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_image sbi_new sbi_transition\" id=\"sbi_18243569527128532\" data-date=\"1657562903\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/Cf4ak6wLRK4\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/292951188_734087524542862_3982877291135561415_n.webp?stp=dst-jpg&#038;_nc_cat=109&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=w6zRpIi7mX0Q7kNvgFMh5v-&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDpKMKAu1-8GeL-9pVGVChJqF6qXhsY1g0ld5rq74OI8A&#038;oe=67568B37\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/292951188_734087524542862_3982877291135561415_n.webp?stp=dst-jpg&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=w6zRpIi7mX0Q7kNvgFMh5v-&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDpKMKAu1-8GeL-9pVGVChJqF6qXhsY1g0ld5rq74OI8A&amp;oe=67568B37&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/292951188_734087524542862_3982877291135561415_n.webp?stp=dst-jpg&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=w6zRpIi7mX0Q7kNvgFMh5v-&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDpKMKAu1-8GeL-9pVGVChJqF6qXhsY1g0ld5rq74OI8A&amp;oe=67568B37&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/292951188_734087524542862_3982877291135561415_n.webp?stp=dst-jpg&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=w6zRpIi7mX0Q7kNvgFMh5v-&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDpKMKAu1-8GeL-9pVGVChJqF6qXhsY1g0ld5rq74OI8A&amp;oe=67568B37&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/292951188_734087524542862_3982877291135561415_n.webp?stp=dst-jpg&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=w6zRpIi7mX0Q7kNvgFMh5v-&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDpKMKAu1-8GeL-9pVGVChJqF6qXhsY1g0ld5rq74OI8A&amp;oe=67568B37&quot;}\">\r\n            <span class=\"sbi-screenreader\">On way of connecting Source electrode of the Power<\/span>\r\n            \t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"On way of connecting Source electrode of the Power GaAs FET to the Ground in the RF Power Amplifier.\n.\n.\n.\n#spelex\n#electronicengineer #electronicdesign\n#circuitboard #pcb #pcbdesign #rf\n#rfdesign #analogdevices #we #gaasfet\n#rfamplifier #printedcircuitboard #amplifier #poweramplifier\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17981290606496230\" data-date=\"1649530250\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CcJBgdgr-rg\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/278065730_478881434021619_8325401761433510921_n.webp?stp=dst-jpg&#038;_nc_cat=108&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=ti_gP636duEQ7kNvgFJU7G4&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDg8gfRjFwbH8eX5tvi_1sHawQp5aJQT2cD8tpW2AVjiQ&#038;oe=67568867\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278065730_478881434021619_8325401761433510921_n.webp?stp=dst-jpg&amp;_nc_cat=108&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ti_gP636duEQ7kNvgFJU7G4&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDg8gfRjFwbH8eX5tvi_1sHawQp5aJQT2cD8tpW2AVjiQ&amp;oe=67568867&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278065730_478881434021619_8325401761433510921_n.webp?stp=dst-jpg&amp;_nc_cat=108&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ti_gP636duEQ7kNvgFJU7G4&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDg8gfRjFwbH8eX5tvi_1sHawQp5aJQT2cD8tpW2AVjiQ&amp;oe=67568867&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278065730_478881434021619_8325401761433510921_n.webp?stp=dst-jpg&amp;_nc_cat=108&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ti_gP636duEQ7kNvgFJU7G4&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDg8gfRjFwbH8eX5tvi_1sHawQp5aJQT2cD8tpW2AVjiQ&amp;oe=67568867&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278065730_478881434021619_8325401761433510921_n.webp?stp=dst-jpg&amp;_nc_cat=108&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ti_gP636duEQ7kNvgFJU7G4&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDg8gfRjFwbH8eX5tvi_1sHawQp5aJQT2cD8tpW2AVjiQ&amp;oe=67568867&quot;}\">\r\n            <span class=\"sbi-screenreader\">These are fotos of the Analog Output Module APAX-5<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"These are fotos of the Analog Output Module APAX-5028 from #Advantech company.\n\nThis high-precision (14 bit) module is used in industrial automation and, of course, complies with EMC - CE and FCC Class A certifications.\n\nSee how it&#039;s designed...\n.\n.\n.\n#spelex #emi #emc \n#emitroubleshooting\n#electromagneticcompatibility \n#emcconsulting \n#pcb #printedcircuitboard \n#automation\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17930353616067767\" data-date=\"1644688873\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CZ4vT-MLHfp\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/273859459_617766579319752_6975238446485423527_n.webp?stp=dst-jpg_tt6&#038;_nc_cat=109&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=iNOIVMsVaBgQ7kNvgG8GCdP&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDWVXW1RLnCGTXIs5KhPUuBSmPVYO1wz97QYCeW15GSLA&#038;oe=67568872\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273859459_617766579319752_6975238446485423527_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=iNOIVMsVaBgQ7kNvgG8GCdP&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDWVXW1RLnCGTXIs5KhPUuBSmPVYO1wz97QYCeW15GSLA&amp;oe=67568872&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273859459_617766579319752_6975238446485423527_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=iNOIVMsVaBgQ7kNvgG8GCdP&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDWVXW1RLnCGTXIs5KhPUuBSmPVYO1wz97QYCeW15GSLA&amp;oe=67568872&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273859459_617766579319752_6975238446485423527_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=iNOIVMsVaBgQ7kNvgG8GCdP&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDWVXW1RLnCGTXIs5KhPUuBSmPVYO1wz97QYCeW15GSLA&amp;oe=67568872&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273859459_617766579319752_6975238446485423527_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=iNOIVMsVaBgQ7kNvgG8GCdP&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDWVXW1RLnCGTXIs5KhPUuBSmPVYO1wz97QYCeW15GSLA&amp;oe=67568872&quot;}\">\r\n            <span class=\"sbi-screenreader\">These are interesting experiments, that explains h<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"These are interesting experiments, that explains how many GND vias need to be placed around vias that carry differential signal when changing PCB layers.\n\nThere are no pure differential signals in our real world and any practical differential signals also contains a certain part of common mode signal.\nWhen a common signal passes in the signal vias the currents flow in the vias in the same direction and have an identical amplitude. The electromagnetic fields that the vias radiate interfere with fields of the differential signal and radiation losses of the target signal might be grater than in case of pure differential signal.\n\nYou can see from the pictures, that losses less than 5% for the following cases (rule of thumb):\nUp to 5 GHz, without any GND vias\nUp to 30 GHz, with 2 GND vias.\nUp to 35 GHz, with 6 GND vias.\nUp to 50 GHz, with 8 GND vias.\n\n(GND vias are the vias that placed around the vias with differential signals)\n\nI got this information from the latest issue of the Signal Integrity online magazine. (Signal Integrity Journal)\n.\n.\n.\n#spelex #emi #emc \n#emitroubleshooting\n#emcconsulting #lvds\n#pcb #differentialsignals #printedcircuitboard #via\n#signalintegrity #signalintegrityjournal \n#highspeedcircuit #highspeedsignal\n#highspeeddata\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_18040623304340333\" data-date=\"1653113343\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/Cdzzts8tipc\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/282112508_578348203517751_6615856683885244655_n.webp?stp=dst-jpg&#038;_nc_cat=101&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=Cm714w2TuHsQ7kNvgFWVR0Y&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYBukZPKzdbOwH7i2KtnXW24BjmidYgXPvlT9W1_fzq1Vw&#038;oe=675672E6\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/282112508_578348203517751_6615856683885244655_n.webp?stp=dst-jpg&amp;_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=Cm714w2TuHsQ7kNvgFWVR0Y&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBukZPKzdbOwH7i2KtnXW24BjmidYgXPvlT9W1_fzq1Vw&amp;oe=675672E6&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/282112508_578348203517751_6615856683885244655_n.webp?stp=dst-jpg&amp;_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=Cm714w2TuHsQ7kNvgFWVR0Y&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBukZPKzdbOwH7i2KtnXW24BjmidYgXPvlT9W1_fzq1Vw&amp;oe=675672E6&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/282112508_578348203517751_6615856683885244655_n.webp?stp=dst-jpg&amp;_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=Cm714w2TuHsQ7kNvgFWVR0Y&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBukZPKzdbOwH7i2KtnXW24BjmidYgXPvlT9W1_fzq1Vw&amp;oe=675672E6&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/282112508_578348203517751_6615856683885244655_n.webp?stp=dst-jpg&amp;_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=Cm714w2TuHsQ7kNvgFWVR0Y&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBukZPKzdbOwH7i2KtnXW24BjmidYgXPvlT9W1_fzq1Vw&amp;oe=675672E6&quot;}\">\r\n            <span class=\"sbi-screenreader\">A new EMI\/EMC issue has been resolved during EMI t<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"A new EMI\/EMC issue has been resolved during EMI troubleshooting.\nThe list with typical resolved EMI\/EMC problems is on the website: www.spelex-i.com\n\nPROJECT: \nHigh Precision Industrial PID Controller.\n\nDESCRIPTION OF THE PROBLEM: \nProblem measuring the accuracy of analogue signals (PT100, PT1000).\n\nSOURCE OF THE PROBLEM:\nAn EMC issue on the board. Noise spikes caused by inadequate filtering of the DC\/DC converter. This disturbed a low noise Analogue to Digital converter (ADC - 21 bits). A second problem was related to the grounding concept.\n.\n.\n.\n#spelex\n#emc #emv #emi #emcconsulting\n#emcconcept \n#electromagneticcompatibility\n#emitroubleshooting\n#highspeedsignal #dcdc\n#adc #noise #groundingconcept\n#groundbounce\n#groundloop\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17969428753932238\" data-date=\"1667641439\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/Ckkx23hLo1s\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/313924576_489884433087062_8411781638451061012_n.webp?stp=dst-jpg&#038;_nc_cat=102&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=TjG4TuKImjIQ7kNvgFLZm53&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYBH8kDmOSGhByAbpIXOSpbIT69BOTNyaD8-URsmYyLnqg&#038;oe=6756A1A0\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/313924576_489884433087062_8411781638451061012_n.webp?stp=dst-jpg&amp;_nc_cat=102&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=TjG4TuKImjIQ7kNvgFLZm53&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBH8kDmOSGhByAbpIXOSpbIT69BOTNyaD8-URsmYyLnqg&amp;oe=6756A1A0&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/313924576_489884433087062_8411781638451061012_n.webp?stp=dst-jpg&amp;_nc_cat=102&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=TjG4TuKImjIQ7kNvgFLZm53&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBH8kDmOSGhByAbpIXOSpbIT69BOTNyaD8-URsmYyLnqg&amp;oe=6756A1A0&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/313924576_489884433087062_8411781638451061012_n.webp?stp=dst-jpg&amp;_nc_cat=102&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=TjG4TuKImjIQ7kNvgFLZm53&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBH8kDmOSGhByAbpIXOSpbIT69BOTNyaD8-URsmYyLnqg&amp;oe=6756A1A0&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/313924576_489884433087062_8411781638451061012_n.webp?stp=dst-jpg&amp;_nc_cat=102&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=TjG4TuKImjIQ7kNvgFLZm53&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBH8kDmOSGhByAbpIXOSpbIT69BOTNyaD8-URsmYyLnqg&amp;oe=6756A1A0&quot;}\">\r\n            <span class=\"sbi-screenreader\">These are the printed circuit boards of the Ettus <\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"These are the printed circuit boards of the Ettus USRP N210 SDR transceiver.\n.\n.\n.\n#spelex #electronicsprojects\n#circuitboard #pcb #pcbdesign\n#radioelectronics\n#analogelectronics #digitalelectronics #rf #trx #tranceiver #receiver\n#rfdesign #sdr #highspeedcircuit\n#hamradio #radioamateur\n#printedcircuitboard #ettus #usrp\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17929936502137025\" data-date=\"1648219271\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/Cbh9AypNdGA\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/277112231_508491237606277_5888156541215369564_n.webp?stp=dst-jpg&#038;_nc_cat=110&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=HdsjV5PAbZ8Q7kNvgHZDTn7&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYD_jfBg_Kyu_0XDq3NRNWbAQVn_V5Ia4RnoM6Qv8JxVNQ&#038;oe=67567AFD\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/277112231_508491237606277_5888156541215369564_n.webp?stp=dst-jpg&amp;_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=HdsjV5PAbZ8Q7kNvgHZDTn7&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYD_jfBg_Kyu_0XDq3NRNWbAQVn_V5Ia4RnoM6Qv8JxVNQ&amp;oe=67567AFD&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/277112231_508491237606277_5888156541215369564_n.webp?stp=dst-jpg&amp;_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=HdsjV5PAbZ8Q7kNvgHZDTn7&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYD_jfBg_Kyu_0XDq3NRNWbAQVn_V5Ia4RnoM6Qv8JxVNQ&amp;oe=67567AFD&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/277112231_508491237606277_5888156541215369564_n.webp?stp=dst-jpg&amp;_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=HdsjV5PAbZ8Q7kNvgHZDTn7&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYD_jfBg_Kyu_0XDq3NRNWbAQVn_V5Ia4RnoM6Qv8JxVNQ&amp;oe=67567AFD&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/277112231_508491237606277_5888156541215369564_n.webp?stp=dst-jpg&amp;_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=HdsjV5PAbZ8Q7kNvgHZDTn7&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYD_jfBg_Kyu_0XDq3NRNWbAQVn_V5Ia4RnoM6Qv8JxVNQ&amp;oe=67567AFD&quot;}\">\r\n            <span class=\"sbi-screenreader\">This is an Evaluation Board of a Linear-in-dB VGA <\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"This is an Evaluation Board of a Linear-in-dB VGA with AGC Detector, that works up to 500MHz.\n.\n.\n.\n#spelex #agc #vga #ad #analogelectronics #analogdevices #rf #amplifier #sma #ad8367\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17986607515440316\" data-date=\"1642763504\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CY_W9n5r5Fb\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/272112204_4857354604355881_905325823113170474_n.jpg?_nc_cat=105&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=YVDcluKL_rIQ7kNvgHkf_Vl&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYBZw8kR5nrFEFeawSxGFgn-Q5ODgg2T2CyX7VO6lWqRRA&#038;oe=67568031\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272112204_4857354604355881_905325823113170474_n.jpg?_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=YVDcluKL_rIQ7kNvgHkf_Vl&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBZw8kR5nrFEFeawSxGFgn-Q5ODgg2T2CyX7VO6lWqRRA&amp;oe=67568031&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272112204_4857354604355881_905325823113170474_n.jpg?_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=YVDcluKL_rIQ7kNvgHkf_Vl&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBZw8kR5nrFEFeawSxGFgn-Q5ODgg2T2CyX7VO6lWqRRA&amp;oe=67568031&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272112204_4857354604355881_905325823113170474_n.jpg?_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=YVDcluKL_rIQ7kNvgHkf_Vl&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBZw8kR5nrFEFeawSxGFgn-Q5ODgg2T2CyX7VO6lWqRRA&amp;oe=67568031&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272112204_4857354604355881_905325823113170474_n.jpg?_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=YVDcluKL_rIQ7kNvgHkf_Vl&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBZw8kR5nrFEFeawSxGFgn-Q5ODgg2T2CyX7VO6lWqRRA&amp;oe=67568031&quot;}\">\r\n            <span class=\"sbi-screenreader\">A new EMI\/EMC issue has been resolved during EMI t<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"A new EMI\/EMC issue has been resolved during EMI troubleshooting.\nThe list with typical resolved EMI\/EMC problems is on the website: www.spelex-i.com\n\nPROJECT: \nEntertainment System ( #Automotive )\n\nDESCRIPTION OF THE PROBLEM: \nA high-speed digital interface on the board had a communication problem. The #PCB was carefully designed with signal integrity in mind. The layout of the high-speed signals on the PCB was developed using a simulation tool.\n\nSOURCE OF THE PROBLEM:\nPower Integrity Issue on the board. Noise on the power rail of the #CPU shifts the threshold of high-speed communication ( #FPGA + CPU + #Memory ), thereby compromising the integrity of the High-Speed Signal ( #SI ) on the PCB.\n.\n.\n.\n#spelex\n#emc #emv #emi #emcconsulting\n#emcconcept \n#electromagneticcompatibility\n#emitroubleshooting #signalintegrity\n#powerintegrity\n#pdn #powerdistributionnetwork\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_image sbi_new sbi_transition\" id=\"sbi_17911931906412364\" data-date=\"1653201954\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/Cd2cudCtEoU\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/282407050_177789731262317_7357208330525864256_n.webp?stp=dst-jpg_tt6&#038;_nc_cat=111&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=ZLs36PRGZB8Q7kNvgFETqrm&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYCSJMValVqooTEh0M9yOSh-72jvXjmBD7m9_XzPlaeMXQ&#038;oe=67569B2A\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/282407050_177789731262317_7357208330525864256_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ZLs36PRGZB8Q7kNvgFETqrm&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCSJMValVqooTEh0M9yOSh-72jvXjmBD7m9_XzPlaeMXQ&amp;oe=67569B2A&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/282407050_177789731262317_7357208330525864256_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ZLs36PRGZB8Q7kNvgFETqrm&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCSJMValVqooTEh0M9yOSh-72jvXjmBD7m9_XzPlaeMXQ&amp;oe=67569B2A&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/282407050_177789731262317_7357208330525864256_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ZLs36PRGZB8Q7kNvgFETqrm&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCSJMValVqooTEh0M9yOSh-72jvXjmBD7m9_XzPlaeMXQ&amp;oe=67569B2A&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/282407050_177789731262317_7357208330525864256_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ZLs36PRGZB8Q7kNvgFETqrm&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCSJMValVqooTEh0M9yOSh-72jvXjmBD7m9_XzPlaeMXQ&amp;oe=67569B2A&quot;}\">\r\n            <span class=\"sbi-screenreader\">It is always useful when a ground on a PCB is bein<\/span>\r\n            \t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"It is always useful when a ground on a PCB is being split to leave the option to combine it with 0 ohm resistors or stitching capacitors. \n\nIn this case you can check if the ground was splitted correctly or if they need to be merged. \n\nThis trick allows to reduce risks and avoid of redesigning the PCB.\n.\n.\n.\n#spelex #emcconsulting\n#emcconcept #emitroubleshooting #pcb #pcbdesign\n#digitalelectronics\n#emc #emv #emi #electromagneticcompatibility\n#grounding #groundingconcept #groundbouncing\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17880791567544193\" data-date=\"1643041274\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CZHoxDQtHyI\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/272394358_1308012079713564_3573072867510259166_n.jpg?_nc_cat=106&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=ACdATvT7Lf4Q7kNvgF23clH&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYBGp57PXeHeNt5kIEsFQGa6jJ9csLL4-Eetn-aehMvEqw&#038;oe=67566D24\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272394358_1308012079713564_3573072867510259166_n.jpg?_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ACdATvT7Lf4Q7kNvgF23clH&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBGp57PXeHeNt5kIEsFQGa6jJ9csLL4-Eetn-aehMvEqw&amp;oe=67566D24&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272394358_1308012079713564_3573072867510259166_n.jpg?_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ACdATvT7Lf4Q7kNvgF23clH&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBGp57PXeHeNt5kIEsFQGa6jJ9csLL4-Eetn-aehMvEqw&amp;oe=67566D24&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272394358_1308012079713564_3573072867510259166_n.jpg?_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ACdATvT7Lf4Q7kNvgF23clH&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBGp57PXeHeNt5kIEsFQGa6jJ9csLL4-Eetn-aehMvEqw&amp;oe=67566D24&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272394358_1308012079713564_3573072867510259166_n.jpg?_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ACdATvT7Lf4Q7kNvgF23clH&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBGp57PXeHeNt5kIEsFQGa6jJ9csLL4-Eetn-aehMvEqw&amp;oe=67566D24&quot;}\">\r\n            <span class=\"sbi-screenreader\">This is a protected printed circuit board using pl<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"This is a protected printed circuit board using plexiglass cut on a CNC machine.(see my previous posts)\n\n------------------\u2010-----------------------\nThe project is an RF Analog Front End, which will be connected to an #FPGA board \n(See my previous posts)\n------------------------------------------\n.\n.\n.\n#spelex #electronicsprojects #hardware #electronicdesign\n#circuitboard #pcb #pcbdesign\n#altium\n#altiumdesigner \n#radioelectronics \n#analogelectronics #digitalelectronics #sdr\n#rf\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17979438139459172\" data-date=\"1642017139\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CYpHYjFLtT_\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/271629873_923993738479669_1860252940125948604_n.jpg?_nc_cat=106&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=suzOiEthBRAQ7kNvgGTGOSE&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYB2RoVOCqNTQzskd4T7kW5iC8XOn-rNDJhYxqN7aaHAmQ&#038;oe=67568B11\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271629873_923993738479669_1860252940125948604_n.jpg?_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=suzOiEthBRAQ7kNvgGTGOSE&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYB2RoVOCqNTQzskd4T7kW5iC8XOn-rNDJhYxqN7aaHAmQ&amp;oe=67568B11&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271629873_923993738479669_1860252940125948604_n.jpg?_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=suzOiEthBRAQ7kNvgGTGOSE&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYB2RoVOCqNTQzskd4T7kW5iC8XOn-rNDJhYxqN7aaHAmQ&amp;oe=67568B11&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271629873_923993738479669_1860252940125948604_n.jpg?_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=suzOiEthBRAQ7kNvgGTGOSE&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYB2RoVOCqNTQzskd4T7kW5iC8XOn-rNDJhYxqN7aaHAmQ&amp;oe=67568B11&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271629873_923993738479669_1860252940125948604_n.jpg?_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=suzOiEthBRAQ7kNvgGTGOSE&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYB2RoVOCqNTQzskd4T7kW5iC8XOn-rNDJhYxqN7aaHAmQ&amp;oe=67568B11&quot;}\">\r\n            <span class=\"sbi-screenreader\">Have you ever used Ethernet interface without any <\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"Have you ever used Ethernet interface without any transformers?\n\nIn some special applications, isolation transformer can be a critical component that must be avoided.\n\nIt is good that TI has already analyzed this solution, that is  described in an application note. \n\nThis method can be used  in any configurations like: \nCapacitor-Cable-Capacitor\nTransformer-Cable-Capacitor\nCapacitor-#PCB-Capacitor\n\nThe validation results presented in this application shows that is able to work in a\r\ntransformerless configuration in 10MB and 100MB with error-free operation up to a 120-meter CAT-5 cable.\n\nThis transformer less, simple  solution has no common mode EMI filter that is included in many ethernet interfaces. Therefore, it can cause EMI problems during EMC test.\n.\n.\n.\n#spelex #emcconsulting\n#emi #emitroubleshooting \n#ti #ethernet #emc  #texasinstruments #transformerless\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17939644795767114\" data-date=\"1644589104\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CZ1xBIkt_8a\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/273817547_3309896022626386_2372008017871910048_n.webp?stp=dst-jpg_tt6&#038;_nc_cat=102&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=gBPBR-TZRvYQ7kNvgEgzXHY&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDOOzMsz-DiffjsCwVr8K7VMi3b1k2TCcbR6-QvTN9x7Q&#038;oe=67567C9A\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273817547_3309896022626386_2372008017871910048_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=102&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=gBPBR-TZRvYQ7kNvgEgzXHY&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDOOzMsz-DiffjsCwVr8K7VMi3b1k2TCcbR6-QvTN9x7Q&amp;oe=67567C9A&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273817547_3309896022626386_2372008017871910048_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=102&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=gBPBR-TZRvYQ7kNvgEgzXHY&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDOOzMsz-DiffjsCwVr8K7VMi3b1k2TCcbR6-QvTN9x7Q&amp;oe=67567C9A&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273817547_3309896022626386_2372008017871910048_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=102&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=gBPBR-TZRvYQ7kNvgEgzXHY&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDOOzMsz-DiffjsCwVr8K7VMi3b1k2TCcbR6-QvTN9x7Q&amp;oe=67567C9A&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273817547_3309896022626386_2372008017871910048_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=102&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=gBPBR-TZRvYQ7kNvgEgzXHY&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDOOzMsz-DiffjsCwVr8K7VMi3b1k2TCcbR6-QvTN9x7Q&amp;oe=67567C9A&quot;}\">\r\n            <span class=\"sbi-screenreader\">I have build this RF adapter to compensate gain ch<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"I have build this RF adapter to compensate gain changes over frequency in a wideband RF amplifier.\nThe whole chain is used for amplification of a high speed digital (Baseband) signal in an RF communication system.\n\nAn RF chain with three RF amplifiers from #Minicircuits has a total gain around \n45 dB in bandwidth 10MHz - 2000MHz, but the amplification changes around 12dB. \n\nThe present adapter consist of RC filter and reduces gain variation over frequency from 12dB to 2.0dB. This changes allow to have a quiet constant amplitude of the digital signal for required data rate.\n.\n.\n.\n#spelex #rf #smaadapter #sma #amplifier #gaincompensation\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_video sbi_new sbi_transition\" id=\"sbi_18278875876053086\" data-date=\"1644444664\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/reel\/CZxdSwHAv6Q\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/273599360_705244447138210_7178147768163426902_n.jpg?_nc_cat=106&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=TlZHzTc_vY4Q7kNvgGIPui4&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYAHpF8c1EE8Z6RR7r4wdQVlnV_4Ui-x1eOC06bMrH8aMA&#038;oe=67568B65\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273599360_705244447138210_7178147768163426902_n.jpg?_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=TlZHzTc_vY4Q7kNvgGIPui4&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAHpF8c1EE8Z6RR7r4wdQVlnV_4Ui-x1eOC06bMrH8aMA&amp;oe=67568B65&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273599360_705244447138210_7178147768163426902_n.jpg?_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=TlZHzTc_vY4Q7kNvgGIPui4&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAHpF8c1EE8Z6RR7r4wdQVlnV_4Ui-x1eOC06bMrH8aMA&amp;oe=67568B65&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273599360_705244447138210_7178147768163426902_n.jpg?_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=TlZHzTc_vY4Q7kNvgGIPui4&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAHpF8c1EE8Z6RR7r4wdQVlnV_4Ui-x1eOC06bMrH8aMA&amp;oe=67568B65&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273599360_705244447138210_7178147768163426902_n.jpg?_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=TlZHzTc_vY4Q7kNvgGIPui4&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAHpF8c1EE8Z6RR7r4wdQVlnV_4Ui-x1eOC06bMrH8aMA&amp;oe=67568B65&quot;}\">\r\n            <span class=\"sbi-screenreader\">The project is an RF Analog Front End, that can be<\/span>\r\n            \t        <svg style=\"color: rgba(255,255,255,1)\" class=\"svg-inline--fa fa-play fa-w-14 sbi_playbtn\" aria-label=\"Play\" aria-hidden=\"true\" data-fa-processed=\"\" data-prefix=\"fa\" data-icon=\"play\" role=\"presentation\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\"><path fill=\"currentColor\" d=\"M424.4 214.7L72.4 6.6C43.8-10.3 0 6.1 0 47.9V464c0 37.5 40.7 60.1 72.4 41.3l352-208c31.4-18.5 31.5-64.1 0-82.6z\"><\/path><\/svg>            <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"The project is an RF Analog Front End, that can be used for different purposes, for example SDR (Software Defined Radio).\n------------\u2010----------------------------\nThe design consist of:\n- Digital RF Attenuator\n- 7order RF Low Pass Filter\n- RF Low Noise Amplifier\n- Differential RF Anti-Aliasing Filter\n- ADC 16bits\/105MSPS (LTC2217)\n- Bus Driver - 16bits \n- DAC 14bits - 275MSPS (DAC5672)\n- Reconstraction RF LPF\n- RF Power Amplifier \n- Low Jitter VCXO 100MHz\n- Low Noise Voltage regulators\n------------------------------------------\n.\n.\n.\n#spelex #electronicsprojects\n#circuitboard #pcb #pcbdesign #altium\n#altiumdesigner \n#radioelectronics \n#analogelectronics #digitalelectronics #rf\n#rfdesign #sdr #highspeedcircuit\n#hamradio #radioamateur\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17963003743526754\" data-date=\"1642604556\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CY6nyzUNyZy\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/272099735_378632527361329_6629139508962360451_n.jpg?_nc_cat=106&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=yT6Ry8SwQi4Q7kNvgFPaU6K&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYBoppR1PuAFNvjIlDo3J3O39PtcqsMFrOcrCQhuu7cK4w&#038;oe=67569602\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272099735_378632527361329_6629139508962360451_n.jpg?_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=yT6Ry8SwQi4Q7kNvgFPaU6K&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBoppR1PuAFNvjIlDo3J3O39PtcqsMFrOcrCQhuu7cK4w&amp;oe=67569602&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272099735_378632527361329_6629139508962360451_n.jpg?_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=yT6Ry8SwQi4Q7kNvgFPaU6K&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBoppR1PuAFNvjIlDo3J3O39PtcqsMFrOcrCQhuu7cK4w&amp;oe=67569602&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272099735_378632527361329_6629139508962360451_n.jpg?_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=yT6Ry8SwQi4Q7kNvgFPaU6K&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBoppR1PuAFNvjIlDo3J3O39PtcqsMFrOcrCQhuu7cK4w&amp;oe=67569602&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272099735_378632527361329_6629139508962360451_n.jpg?_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=yT6Ry8SwQi4Q7kNvgFPaU6K&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBoppR1PuAFNvjIlDo3J3O39PtcqsMFrOcrCQhuu7cK4w&amp;oe=67569602&quot;}\">\r\n            <span class=\"sbi-screenreader\">This is a useful graph that allows you to quickly <\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"This is a useful graph that allows you to quickly determine what frequency different logic element families can emit.\n\nI  use it during EMI troubleshooting and EMC design review, to find potential sources of EMI.\n\nIt is always better to choose the slowest component in terms of EMI.\n\nThe pictures are from #TI and #toshiba application notes\n.\n.\n.\n#spelex #emcconsulting #emcconcept #emi #emc #electromagneticcompatibility #emv #emitroubleshooting\n#digitalelectronics\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_image sbi_new sbi_transition\" id=\"sbi_17957601748577647\" data-date=\"1642181337\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CYuAkVbN0db\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/271777797_309342887919190_2204017446698249078_n.jpg?_nc_cat=110&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=X2lLnPZnuLMQ7kNvgG4Xz_a&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDKWeRRWygNgrvvDEfce2E1iHoHOyJzVOE5hpwnupOXDg&#038;oe=67568341\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271777797_309342887919190_2204017446698249078_n.jpg?_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=X2lLnPZnuLMQ7kNvgG4Xz_a&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDKWeRRWygNgrvvDEfce2E1iHoHOyJzVOE5hpwnupOXDg&amp;oe=67568341&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271777797_309342887919190_2204017446698249078_n.jpg?_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=X2lLnPZnuLMQ7kNvgG4Xz_a&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDKWeRRWygNgrvvDEfce2E1iHoHOyJzVOE5hpwnupOXDg&amp;oe=67568341&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271777797_309342887919190_2204017446698249078_n.jpg?_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=X2lLnPZnuLMQ7kNvgG4Xz_a&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDKWeRRWygNgrvvDEfce2E1iHoHOyJzVOE5hpwnupOXDg&amp;oe=67568341&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271777797_309342887919190_2204017446698249078_n.jpg?_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=X2lLnPZnuLMQ7kNvgG4Xz_a&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDKWeRRWygNgrvvDEfce2E1iHoHOyJzVOE5hpwnupOXDg&amp;oe=67568341&quot;}\">\r\n            <span class=\"sbi-screenreader\">Ferrite bead is a passive frequency dependent resi<\/span>\r\n            \t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"Ferrite bead is a passive frequency dependent resistance component, that can suppresses high frequency signals on power supply lines.\n\nI have seen in many industrial products, designed for the EU market and requiring the CE mark, different types of ferrite beads.\n\nThese ferrite components can be very useful and valuable to minimize level of conducted or radiated EMI from electronic device.\n\nOn the one hand, the use of the ferrite bead is useful, but one should be aware of possible anti-resonance peaks, which can cause the resulting impedance profile to violate the target impedance level.\nThese anti-resonance peaks can accur whenever a falling capacitive slope intersects with the rising inductance slope of the bead.\n\nIf the target impedance is low, these peaks can easily violate the target impedance and disrupt the proper operation of the designed electronics.\n\nIt is good to use at least #PSpice to ensure these anti-resonance peaks do not violate the target impedance. In the best case is good to use #field #simulation tools like #Hyperlynx, #ADS or #HFSS where is possible to simulate #PCB layout together with components including ferrite beads.\n\nOn the picture is an example of exactly this case. I found it in an #Altera (#Intel) manual document, that give #powerintegrity tips for any #FPGA .\n.\n.\n.\n#spelex #emcconsulting #emcconcept \n#emi #emitroubleshooting #ferritebead #pdn #powerdistributionnetwork\n#powerintegrity #signalintegrity\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_image sbi_new sbi_transition\" id=\"sbi_17936686241027244\" data-date=\"1650095598\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CcZ30nFttz6\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/278543034_1142097379914134_972486334908005_n.webp?stp=dst-jpg&#038;_nc_cat=107&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=ScVuA18GJjMQ7kNvgFcuCg5&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDi5U8w6Z2nMEvCMDV-1LboBRaUX5Ridbb6O07tA-qT7g&#038;oe=67568889\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278543034_1142097379914134_972486334908005_n.webp?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ScVuA18GJjMQ7kNvgFcuCg5&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDi5U8w6Z2nMEvCMDV-1LboBRaUX5Ridbb6O07tA-qT7g&amp;oe=67568889&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278543034_1142097379914134_972486334908005_n.webp?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ScVuA18GJjMQ7kNvgFcuCg5&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDi5U8w6Z2nMEvCMDV-1LboBRaUX5Ridbb6O07tA-qT7g&amp;oe=67568889&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278543034_1142097379914134_972486334908005_n.webp?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ScVuA18GJjMQ7kNvgFcuCg5&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDi5U8w6Z2nMEvCMDV-1LboBRaUX5Ridbb6O07tA-qT7g&amp;oe=67568889&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278543034_1142097379914134_972486334908005_n.webp?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ScVuA18GJjMQ7kNvgFcuCg5&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDi5U8w6Z2nMEvCMDV-1LboBRaUX5Ridbb6O07tA-qT7g&amp;oe=67568889&quot;}\">\r\n            <span class=\"sbi-screenreader\">The project is an RF SDR tranceiver (Software Defi<\/span>\r\n            \t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"The project is an RF SDR tranceiver (Software Defined Radio).\n------------\u2010----------------------------\nThe RF design consist of:\n- Digital RF Attenuator\n- 7order RF Low Pass Filter\n- RF Low Noise Amplifier\n- Differential RF Anti-Aliasing Filter\n- ADC 16bits\/105MSPS (LTC2217)\n- Bus Driver - 16bits \n- DAC 14bits - 275MSPS (DAC5672)\n- Reconstraction RF LPF\n- RF Power Amplifier \n- Low Jitter VCXO 100MHz\n- Low Noise Voltage regulators\n\u2010-----------------------------------------\nThe digital board is an EVB from Terasic DE1-SOC with the Intel FPGA \nCyclone V.\n------------------------------------------\n.\n.\n.\n#spelex #electronicsprojects\n#circuitboard #pcb #pcbdesign #altium\n#altiumdesigner #fpga #Intel #terasic\n#radioelectronics #de1soc #cyclone\n#analogelectronics #digitalelectronics #rf #trx #tranceiver #receiver\n#rfdesign #sdr #highspeedcircuit\n#hamradio #radioamateur\n#printedcircuitboard\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_image sbi_new sbi_transition\" id=\"sbi_17943729214955098\" data-date=\"1652169122\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CdXqwYYNBrX\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/280167088_1036938790591992_1690645046710593859_n.webp?stp=dst-jpg_tt6&#038;_nc_cat=104&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=j5_Z0gAlMzYQ7kNvgGmftw9&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYCr0Rb_xeTXw3Seb4ObmNJS56iUQqy7gWPV7aZPfR_UzA&#038;oe=6756A1B7\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280167088_1036938790591992_1690645046710593859_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=104&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=j5_Z0gAlMzYQ7kNvgGmftw9&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCr0Rb_xeTXw3Seb4ObmNJS56iUQqy7gWPV7aZPfR_UzA&amp;oe=6756A1B7&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280167088_1036938790591992_1690645046710593859_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=104&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=j5_Z0gAlMzYQ7kNvgGmftw9&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCr0Rb_xeTXw3Seb4ObmNJS56iUQqy7gWPV7aZPfR_UzA&amp;oe=6756A1B7&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280167088_1036938790591992_1690645046710593859_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=104&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=j5_Z0gAlMzYQ7kNvgGmftw9&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCr0Rb_xeTXw3Seb4ObmNJS56iUQqy7gWPV7aZPfR_UzA&amp;oe=6756A1B7&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280167088_1036938790591992_1690645046710593859_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=104&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=j5_Z0gAlMzYQ7kNvgGmftw9&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCr0Rb_xeTXw3Seb4ObmNJS56iUQqy7gWPV7aZPfR_UzA&amp;oe=6756A1B7&quot;}\">\r\n            <span class=\"sbi-screenreader\">Near Field Emissions H-Field Scan of Tight vs. Loo<\/span>\r\n            \t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"Near Field Emissions H-Field Scan of Tight vs. Loose Coupling for differential signals (LVDS, USB, ETHERNET etc.)\n\nThe picture is from an application note - Gentex Corporation.\n.\n.\n.\n#spelex #electronicsengineering #emcconsulting\n#emcconcept #electronicdesign #emitroubleshooting #pcb #pcbdesign\n#analogelectronics #printedcircuitboard\n#emc #emv #emi #electromagneticcompatibility\n#grounding #groundingconcepts #signalIntegrity #powerintegrity #lvds #usb #ethernet #differentialsignal #rfsimulation #field #nearfield #differentialpair #emission #gentex\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_18254829211112676\" data-date=\"1667576206\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/Cki1b2pNJV2\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/314349252_849083819848906_8336682909525277228_n.webp?stp=dst-jpg&#038;_nc_cat=100&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=GjR_pROFHbMQ7kNvgGjjrID&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDwaPFr44GO8O8_5axP-3dM6-aXooc3mJ_1NfTZH6YOJA&#038;oe=67567AF9\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/314349252_849083819848906_8336682909525277228_n.webp?stp=dst-jpg&amp;_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=GjR_pROFHbMQ7kNvgGjjrID&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDwaPFr44GO8O8_5axP-3dM6-aXooc3mJ_1NfTZH6YOJA&amp;oe=67567AF9&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/314349252_849083819848906_8336682909525277228_n.webp?stp=dst-jpg&amp;_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=GjR_pROFHbMQ7kNvgGjjrID&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDwaPFr44GO8O8_5axP-3dM6-aXooc3mJ_1NfTZH6YOJA&amp;oe=67567AF9&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/314349252_849083819848906_8336682909525277228_n.webp?stp=dst-jpg&amp;_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=GjR_pROFHbMQ7kNvgGjjrID&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDwaPFr44GO8O8_5axP-3dM6-aXooc3mJ_1NfTZH6YOJA&amp;oe=67567AF9&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/314349252_849083819848906_8336682909525277228_n.webp?stp=dst-jpg&amp;_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=GjR_pROFHbMQ7kNvgGjjrID&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDwaPFr44GO8O8_5axP-3dM6-aXooc3mJ_1NfTZH6YOJA&amp;oe=67567AF9&quot;}\">\r\n            <span class=\"sbi-screenreader\">These are the RF Up-Converter and Down-Converter P<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"These are the RF Up-Converter and Down-Converter PCBs of the Ettus USRP SDR transceiver.\n.\n.\n.\n#spelex #electronicsprojects\n#circuitboard #pcb #pcbdesign\n#radioelectronics\n#analogelectronics #digitalelectronics #rf #trx #tranceiver #receiver\n#rfdesign #sdr #highspeedcircuit\n#hamradio #radioamateur\n#printedcircuitboard #ettus #usrp\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_image sbi_new sbi_transition\" id=\"sbi_17885742311603904\" data-date=\"1653331866\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/Cd6Ug47rqCX\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/283127001_1052953562314202_4716289663392422258_n.webp?stp=dst-jpg_tt6&#038;_nc_cat=104&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=Q7b81X6Z8wYQ7kNvgEQCRU0&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYAbdXlIrWK0U0pEITGXbridNW5k0KdC5-59Dj_Au70hdA&#038;oe=67568934\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/283127001_1052953562314202_4716289663392422258_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=104&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=Q7b81X6Z8wYQ7kNvgEQCRU0&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAbdXlIrWK0U0pEITGXbridNW5k0KdC5-59Dj_Au70hdA&amp;oe=67568934&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/283127001_1052953562314202_4716289663392422258_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=104&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=Q7b81X6Z8wYQ7kNvgEQCRU0&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAbdXlIrWK0U0pEITGXbridNW5k0KdC5-59Dj_Au70hdA&amp;oe=67568934&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/283127001_1052953562314202_4716289663392422258_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=104&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=Q7b81X6Z8wYQ7kNvgEQCRU0&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAbdXlIrWK0U0pEITGXbridNW5k0KdC5-59Dj_Au70hdA&amp;oe=67568934&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/283127001_1052953562314202_4716289663392422258_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=104&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=Q7b81X6Z8wYQ7kNvgEQCRU0&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAbdXlIrWK0U0pEITGXbridNW5k0KdC5-59Dj_Au70hdA&amp;oe=67568934&quot;}\">\r\n            <span class=\"sbi-screenreader\">Power Distribution Network (PDN) of an  ASIC.\n.\n.\n<\/span>\r\n            \t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"Power Distribution Network (PDN) of an  ASIC.\n.\n.\n.\n#spelex #emcconsulting\n#digitalelectronics\n#emc #emv #emi #electromagneticcompatibility #powerdistributionnetwork \n#powerintegrity #pdn #asic\n#pcb #pcbdesign #capacitors #tantalum #polymer\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_video sbi_new sbi_transition\" id=\"sbi_17970939661780430\" data-date=\"1667650297\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/reel\/CklCCPCgw-n\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.36329-15\/313934297_3334076163520589_3979217218498971930_n.jpg?_nc_cat=103&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=p6wOaQA-PlgQ7kNvgFsFym-&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYA38vFph-QKjOR0kq5F14jBjut2_t8ZfhBZ_NdmNSolng&#038;oe=67566E47\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/313934297_3334076163520589_3979217218498971930_n.jpg?_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=p6wOaQA-PlgQ7kNvgFsFym-&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA38vFph-QKjOR0kq5F14jBjut2_t8ZfhBZ_NdmNSolng&amp;oe=67566E47&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/313934297_3334076163520589_3979217218498971930_n.jpg?_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=p6wOaQA-PlgQ7kNvgFsFym-&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA38vFph-QKjOR0kq5F14jBjut2_t8ZfhBZ_NdmNSolng&amp;oe=67566E47&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/313934297_3334076163520589_3979217218498971930_n.jpg?_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=p6wOaQA-PlgQ7kNvgFsFym-&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA38vFph-QKjOR0kq5F14jBjut2_t8ZfhBZ_NdmNSolng&amp;oe=67566E47&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/313934297_3334076163520589_3979217218498971930_n.jpg?_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=p6wOaQA-PlgQ7kNvgFsFym-&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA38vFph-QKjOR0kq5F14jBjut2_t8ZfhBZ_NdmNSolng&amp;oe=67566E47&quot;}\">\r\n            <span class=\"sbi-screenreader\">Ettus USRP N210 inside - SDR transceiver.\n.\n.\n.\n#s<\/span>\r\n            \t        <svg style=\"color: rgba(255,255,255,1)\" class=\"svg-inline--fa fa-play fa-w-14 sbi_playbtn\" aria-label=\"Play\" aria-hidden=\"true\" data-fa-processed=\"\" data-prefix=\"fa\" data-icon=\"play\" role=\"presentation\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\"><path fill=\"currentColor\" d=\"M424.4 214.7L72.4 6.6C43.8-10.3 0 6.1 0 47.9V464c0 37.5 40.7 60.1 72.4 41.3l352-208c31.4-18.5 31.5-64.1 0-82.6z\"><\/path><\/svg>            <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"Ettus USRP N210 inside - SDR transceiver.\n.\n.\n.\n#spelex #sdr #pcb #rf #fpga #ettus #usrp\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_video sbi_new sbi_transition\" id=\"sbi_17918108231284981\" data-date=\"1642673077\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/reel\/CY8ovNzII1S\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/272119661_475957104247831_1647072091580495149_n.jpg?_nc_cat=111&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=PNfcY6QxGAUQ7kNvgEVbUt2&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDLYtogLSStsf1WoMxwuPz4zFZtYyXJP2HdKJclhmHQtQ&#038;oe=67569255\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272119661_475957104247831_1647072091580495149_n.jpg?_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=PNfcY6QxGAUQ7kNvgEVbUt2&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDLYtogLSStsf1WoMxwuPz4zFZtYyXJP2HdKJclhmHQtQ&amp;oe=67569255&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272119661_475957104247831_1647072091580495149_n.jpg?_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=PNfcY6QxGAUQ7kNvgEVbUt2&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDLYtogLSStsf1WoMxwuPz4zFZtYyXJP2HdKJclhmHQtQ&amp;oe=67569255&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272119661_475957104247831_1647072091580495149_n.jpg?_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=PNfcY6QxGAUQ7kNvgEVbUt2&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDLYtogLSStsf1WoMxwuPz4zFZtYyXJP2HdKJclhmHQtQ&amp;oe=67569255&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272119661_475957104247831_1647072091580495149_n.jpg?_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=PNfcY6QxGAUQ7kNvgEVbUt2&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDLYtogLSStsf1WoMxwuPz4zFZtYyXJP2HdKJclhmHQtQ&amp;oe=67569255&quot;}\">\r\n            <span class=\"sbi-screenreader\">This is a quick check, if an RF chain with an #ADC<\/span>\r\n            \t        <svg style=\"color: rgba(255,255,255,1)\" class=\"svg-inline--fa fa-play fa-w-14 sbi_playbtn\" aria-label=\"Play\" aria-hidden=\"true\" data-fa-processed=\"\" data-prefix=\"fa\" data-icon=\"play\" role=\"presentation\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\"><path fill=\"currentColor\" d=\"M424.4 214.7L72.4 6.6C43.8-10.3 0 6.1 0 47.9V464c0 37.5 40.7 60.1 72.4 41.3l352-208c31.4-18.5 31.5-64.1 0-82.6z\"><\/path><\/svg>            <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"This is a quick check, if an RF chain with an #ADC work. Namely, that the ADC sees filtered and amplified signal.\n\nThe performance test will be done in the lab, but after the fist start, during commitioning, it is good to know that modules at least work.\n\nIt is necessary to check this functionality without connecting to a digital board and programming an FPGA.\n\nThe external #oscillator generate a signal, that I couple with a help of my hand to an RF input. The blue LED is a part of the circuit that catches and hold overflow events of an ADC on the board.\n------------------\u2010-----------------------\nThe project is an RF Analog Front End, which will be connected to an #FPGA board \n(See my previous posts)\n------------------------------------------\n.\n.\n.\n#spelex #electronicsprojects #hardware #electronicdesign\n#circuitboard #pcb #pcbdesign\n#radioelectronics \n#analogelectronics #digitalelectronics #sdr\n#rf\n#analogfrontend \n#electronicmeasurement #led #leds\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17944694728785130\" data-date=\"1644096629\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CZnFsjZLiSB\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/273208028_358407282772605_7754007832177244078_n.webp?stp=dst-jpg_tt6&#038;_nc_cat=101&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=lnwRKHS0hjEQ7kNvgFRajJI&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYD0XW3-v1W0gg0MXFHbhhazjoCSUnxZdnp2IBPL4dCrnA&#038;oe=67569C70\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273208028_358407282772605_7754007832177244078_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=lnwRKHS0hjEQ7kNvgFRajJI&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYD0XW3-v1W0gg0MXFHbhhazjoCSUnxZdnp2IBPL4dCrnA&amp;oe=67569C70&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273208028_358407282772605_7754007832177244078_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=lnwRKHS0hjEQ7kNvgFRajJI&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYD0XW3-v1W0gg0MXFHbhhazjoCSUnxZdnp2IBPL4dCrnA&amp;oe=67569C70&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273208028_358407282772605_7754007832177244078_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=lnwRKHS0hjEQ7kNvgFRajJI&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYD0XW3-v1W0gg0MXFHbhhazjoCSUnxZdnp2IBPL4dCrnA&amp;oe=67569C70&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273208028_358407282772605_7754007832177244078_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=lnwRKHS0hjEQ7kNvgFRajJI&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYD0XW3-v1W0gg0MXFHbhhazjoCSUnxZdnp2IBPL4dCrnA&amp;oe=67569C70&quot;}\">\r\n            <span class=\"sbi-screenreader\">Electronics designers face the choice of electroni<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"Electronics designers face the choice of electronic components every day. One of the most popular types of components are capacitors. There are many different types of capacitors on a market. It is important for a good developer to stay afloat and not drown out from a large number of types. Understanding the important parameters allows you to create a reliable and cost-effective device. Prices for some types of capacitors can vary hundreds or more times.\n\nThis picture compares the ESR between different types of capacitors. You can see that there are two types of aluminum capacitors (electrolytic and polymer) whose ESR varies hundreds of times at room temperature. Visually, they are very similar with slight differences in labeling.\n\nAn engineer, if he is not sure, can choose the most expensive capacitor and think he is on the safe side. \n\nThis is exactly the case I encountered while troubleshooting EMC self-compatibility. An LDO was oscillating in one performance sensitiv project that I described in my previous posts. \n\nInformative images are taken from a Wurth Electronic presentation.\n.\n.\n.\n#spelex #emitroubleshooting #emi #emc #capacitors #esr #electromagneticcompatibility \n#we #w\u00fcrthelektronik #aluminiumpolymer \n#aluminiumelectrolytic\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_18290800972040565\" data-date=\"1650919331\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/Ccya-BBr7zD\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/279319822_651512112620430_2791202122604404492_n.webp?stp=dst-jpg_tt6&#038;_nc_cat=102&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=v3sTaLdm764Q7kNvgGnfQMw&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDgYLQGn8f1WHAMQdKzRX0HYmTgTH-QZt0Nd6EMhWhZ0g&#038;oe=6756862D\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/279319822_651512112620430_2791202122604404492_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=102&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=v3sTaLdm764Q7kNvgGnfQMw&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDgYLQGn8f1WHAMQdKzRX0HYmTgTH-QZt0Nd6EMhWhZ0g&amp;oe=6756862D&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/279319822_651512112620430_2791202122604404492_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=102&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=v3sTaLdm764Q7kNvgGnfQMw&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDgYLQGn8f1WHAMQdKzRX0HYmTgTH-QZt0Nd6EMhWhZ0g&amp;oe=6756862D&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/279319822_651512112620430_2791202122604404492_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=102&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=v3sTaLdm764Q7kNvgGnfQMw&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDgYLQGn8f1WHAMQdKzRX0HYmTgTH-QZt0Nd6EMhWhZ0g&amp;oe=6756862D&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/279319822_651512112620430_2791202122604404492_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=102&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=v3sTaLdm764Q7kNvgGnfQMw&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDgYLQGn8f1WHAMQdKzRX0HYmTgTH-QZt0Nd6EMhWhZ0g&amp;oe=6756862D&quot;}\">\r\n            <span class=\"sbi-screenreader\">This is an RF power amplifier circuit board built <\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"This is an RF power amplifier circuit board built with lumped components.\n.\n.\n.\n#spelex\n#electronicengineer #electronicdesign\n#circuitboard #pcb #pcbdesign #rf\n#rfdesign #analogdevices #we #w\u00fcrthelektronik\n#rfamplifier #printedcircuitboard\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_video sbi_new sbi_transition\" id=\"sbi_17911852298158440\" data-date=\"1641462736\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/reel\/CYYl1TyIcT8\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/271499473_981446626056037_921869608713714378_n.jpg?_nc_cat=103&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=LOJDU5smASUQ7kNvgHKZINj&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYA9wPQ9dExnnbSzjMVp0lpuj5PkCsgZ5t1cdI738g26Aw&#038;oe=675672F4\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271499473_981446626056037_921869608713714378_n.jpg?_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=LOJDU5smASUQ7kNvgHKZINj&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA9wPQ9dExnnbSzjMVp0lpuj5PkCsgZ5t1cdI738g26Aw&amp;oe=675672F4&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271499473_981446626056037_921869608713714378_n.jpg?_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=LOJDU5smASUQ7kNvgHKZINj&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA9wPQ9dExnnbSzjMVp0lpuj5PkCsgZ5t1cdI738g26Aw&amp;oe=675672F4&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271499473_981446626056037_921869608713714378_n.jpg?_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=LOJDU5smASUQ7kNvgHKZINj&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA9wPQ9dExnnbSzjMVp0lpuj5PkCsgZ5t1cdI738g26Aw&amp;oe=675672F4&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271499473_981446626056037_921869608713714378_n.jpg?_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=LOJDU5smASUQ7kNvgHKZINj&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA9wPQ9dExnnbSzjMVp0lpuj5PkCsgZ5t1cdI738g26Aw&amp;oe=675672F4&quot;}\">\r\n            <span class=\"sbi-screenreader\">3D View is a nice option of the Altium Designer. I<\/span>\r\n            \t        <svg style=\"color: rgba(255,255,255,1)\" class=\"svg-inline--fa fa-play fa-w-14 sbi_playbtn\" aria-label=\"Play\" aria-hidden=\"true\" data-fa-processed=\"\" data-prefix=\"fa\" data-icon=\"play\" role=\"presentation\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\"><path fill=\"currentColor\" d=\"M424.4 214.7L72.4 6.6C43.8-10.3 0 6.1 0 47.9V464c0 37.5 40.7 60.1 72.4 41.3l352-208c31.4-18.5 31.5-64.1 0-82.6z\"><\/path><\/svg>            <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"3D View is a nice option of the Altium Designer. I like it.\n\nThe project is an RF Analog Front End, that can be used for different purposes, for example SDR (Software Defined Radio).\n------------\u2010----------------------------\nThe design consist of:\n- Digital RF Attenuator\n- 7order RF Low Pass Filter\n- RF Low Noise Amplifier\n- Differential RF Anti-Aliasing Filter\n- ADC 16bits\/105MSPS (LTC2217)\n- Bus Driver - 16bits \n- DAC 14bits - 275MSPS (DAC5672)\n- Reconstraction RF LPF\n- RF Power Amplifier \n- Low Jitter VCXO 100MHz\n- Low Noise Voltage regulators\n------------------------------------------\n.\n.\n.\n#spelex #electronicsprojects #hardware #electronicdesign\n#circuitboard #pcb #pcbdesign\n#circuitdesign #altium\n#altiumdesigner \n#radioelectronics \n#analogelectronics #digitalelectronics #rf\n#rfdesign #sdr #highspeedcircuit\n#hamradio #radioamateur #3d\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17937796997045627\" data-date=\"1650701276\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/Ccr7D8KthwQ\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/278872814_1032787177320386_6855604794824943940_n.webp?stp=dst-jpg&#038;_nc_cat=101&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=IEb_nkjkJCAQ7kNvgFN6TCH&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYCTZNpXIUu9gTORUWEzDRYvcgeMlMTbsUkId1AUnt6cNQ&#038;oe=67568B6F\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278872814_1032787177320386_6855604794824943940_n.webp?stp=dst-jpg&amp;_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=IEb_nkjkJCAQ7kNvgFN6TCH&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCTZNpXIUu9gTORUWEzDRYvcgeMlMTbsUkId1AUnt6cNQ&amp;oe=67568B6F&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278872814_1032787177320386_6855604794824943940_n.webp?stp=dst-jpg&amp;_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=IEb_nkjkJCAQ7kNvgFN6TCH&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCTZNpXIUu9gTORUWEzDRYvcgeMlMTbsUkId1AUnt6cNQ&amp;oe=67568B6F&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278872814_1032787177320386_6855604794824943940_n.webp?stp=dst-jpg&amp;_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=IEb_nkjkJCAQ7kNvgFN6TCH&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCTZNpXIUu9gTORUWEzDRYvcgeMlMTbsUkId1AUnt6cNQ&amp;oe=67568B6F&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278872814_1032787177320386_6855604794824943940_n.webp?stp=dst-jpg&amp;_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=IEb_nkjkJCAQ7kNvgFN6TCH&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCTZNpXIUu9gTORUWEzDRYvcgeMlMTbsUkId1AUnt6cNQ&amp;oe=67568B6F&quot;}\">\r\n            <span class=\"sbi-screenreader\">With the help of these photos, I would like to hig<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"With the help of these photos, I would like to highlight the various EMI \/ EMC design methods that helped the developer create a low noise precision electronics and go through the necessary EMC tests.\n\nLook at PCB layout at specific locations, component placement, and functional grouping on the board.\n\nThese are fotos of the Analog Output Module APAX-5028 from #Advantech company.\n\nThis high-precision (14 bit) module is used in industrial automation and, of course, complies with EMC - CE and FCC Class A certifications.\n.\n.\n.\n#spelex #emi #emc \n#emitroubleshooting\n#electromagneticcompatibility \n#emcconsulting #industrialcontrol\n#pcb #printedcircuitboard \n#automation #filter #emifilter \n#commonmodechokes\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_image sbi_new sbi_transition\" id=\"sbi_17884208429599927\" data-date=\"1642068087\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CYqoj5DNlV8\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/271832358_1625245014475918_2878306491706935806_n.jpg?_nc_cat=103&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=xBJodNOOWmYQ7kNvgHocHAy&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYBQdXOaMBPTsesDF-U6IHBWuh9LeBaKOJe4qQj5Lt5_Cw&#038;oe=6756946F\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271832358_1625245014475918_2878306491706935806_n.jpg?_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=xBJodNOOWmYQ7kNvgHocHAy&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBQdXOaMBPTsesDF-U6IHBWuh9LeBaKOJe4qQj5Lt5_Cw&amp;oe=6756946F&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271832358_1625245014475918_2878306491706935806_n.jpg?_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=xBJodNOOWmYQ7kNvgHocHAy&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBQdXOaMBPTsesDF-U6IHBWuh9LeBaKOJe4qQj5Lt5_Cw&amp;oe=6756946F&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271832358_1625245014475918_2878306491706935806_n.jpg?_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=xBJodNOOWmYQ7kNvgHocHAy&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBQdXOaMBPTsesDF-U6IHBWuh9LeBaKOJe4qQj5Lt5_Cw&amp;oe=6756946F&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271832358_1625245014475918_2878306491706935806_n.jpg?_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=xBJodNOOWmYQ7kNvgHocHAy&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBQdXOaMBPTsesDF-U6IHBWuh9LeBaKOJe4qQj5Lt5_Cw&amp;oe=6756946F&quot;}\">\r\n            <span class=\"sbi-screenreader\">Side view on the PCB.\n------------------\u2010-------<\/span>\r\n            \t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"Side view on the PCB.\n------------------\u2010-----------------------\nThe project is an RF Analog Front End, which will be connected to an #FPGA board \n(See my previous posts)\n------------------------------------------\n.\n.\n.\n#spelex #electronicsprojects #hardware #electronicdesign\n#circuitboard #pcb #pcbdesign\n#altium\n#altiumdesigner \n#radioelectronics \n#analogelectronics #digitalelectronics #sdr\n#w\u00fcrthelektronik #rf\n#shielding #analogfrontend  #texasinstruments\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_video sbi_new sbi_transition\" id=\"sbi_17972806378888285\" data-date=\"1667214066\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/reel\/CkYAyZbAeut\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.36329-15\/313283418_659690392283610_685095592604489131_n.jpg?_nc_cat=110&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=jys72LcIriAQ7kNvgG6Y-18&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYAiwsoPFevKBQIUJgxwXyXxGKZt9nFZY-cFaiI91iZ0UA&#038;oe=67566B96\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/313283418_659690392283610_685095592604489131_n.jpg?_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=jys72LcIriAQ7kNvgG6Y-18&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAiwsoPFevKBQIUJgxwXyXxGKZt9nFZY-cFaiI91iZ0UA&amp;oe=67566B96&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/313283418_659690392283610_685095592604489131_n.jpg?_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=jys72LcIriAQ7kNvgG6Y-18&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAiwsoPFevKBQIUJgxwXyXxGKZt9nFZY-cFaiI91iZ0UA&amp;oe=67566B96&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/313283418_659690392283610_685095592604489131_n.jpg?_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=jys72LcIriAQ7kNvgG6Y-18&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAiwsoPFevKBQIUJgxwXyXxGKZt9nFZY-cFaiI91iZ0UA&amp;oe=67566B96&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/313283418_659690392283610_685095592604489131_n.jpg?_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=jys72LcIriAQ7kNvgG6Y-18&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAiwsoPFevKBQIUJgxwXyXxGKZt9nFZY-cFaiI91iZ0UA&amp;oe=67566B96&quot;}\">\r\n            <span class=\"sbi-screenreader\">This is a mathematical modulation \/ demodulation m<\/span>\r\n            \t        <svg style=\"color: rgba(255,255,255,1)\" class=\"svg-inline--fa fa-play fa-w-14 sbi_playbtn\" aria-label=\"Play\" aria-hidden=\"true\" data-fa-processed=\"\" data-prefix=\"fa\" data-icon=\"play\" role=\"presentation\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\"><path fill=\"currentColor\" d=\"M424.4 214.7L72.4 6.6C43.8-10.3 0 6.1 0 47.9V464c0 37.5 40.7 60.1 72.4 41.3l352-208c31.4-18.5 31.5-64.1 0-82.6z\"><\/path><\/svg>            <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"This is a mathematical modulation \/ demodulation model for the RF SDR (Software Defined Radio) transceiver from my previous posts.\n\nI took an audio file with a pleasant &quot;I don&#039;t understand&quot; female voice, modulated this signal using AM-DSB and AM-SSB modulation (IQ signals), and then upconverted it to a few MHz.\n\nThe received signal was then downconverted (IQ signals) and demodulated with a different frequency offset.\n\nThis mathematical algorithm will be implemented in an #FPGA.\n.\n.\n.\n#spelex\n#radioelectronics\n#analogelectronics #digitalelectronics #rf #trx #tranceiver #receiver #sdr #hamradio #radioamateur\n#softwaredefinedradio \n#matlab #ssb #dsb #am\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_video sbi_new sbi_transition\" id=\"sbi_17907186914295698\" data-date=\"1643278307\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/reel\/CZOsoZooA5Y\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/272720042_1765400520328777_7162054649730922857_n.jpg?_nc_cat=111&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=kgYCruktP-YQ7kNvgGdF-hS&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYA7IqMOJ93HW3K8teBx-uaGL1UoQAey8Eiy1el1GwzBwQ&#038;oe=67569D07\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272720042_1765400520328777_7162054649730922857_n.jpg?_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=kgYCruktP-YQ7kNvgGdF-hS&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA7IqMOJ93HW3K8teBx-uaGL1UoQAey8Eiy1el1GwzBwQ&amp;oe=67569D07&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272720042_1765400520328777_7162054649730922857_n.jpg?_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=kgYCruktP-YQ7kNvgGdF-hS&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA7IqMOJ93HW3K8teBx-uaGL1UoQAey8Eiy1el1GwzBwQ&amp;oe=67569D07&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272720042_1765400520328777_7162054649730922857_n.jpg?_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=kgYCruktP-YQ7kNvgGdF-hS&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA7IqMOJ93HW3K8teBx-uaGL1UoQAey8Eiy1el1GwzBwQ&amp;oe=67569D07&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272720042_1765400520328777_7162054649730922857_n.jpg?_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=kgYCruktP-YQ7kNvgGdF-hS&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA7IqMOJ93HW3K8teBx-uaGL1UoQAey8Eiy1el1GwzBwQ&amp;oe=67569D07&quot;}\">\r\n            <span class=\"sbi-screenreader\">How can we calculate a total power consumption and<\/span>\r\n            \t        <svg style=\"color: rgba(255,255,255,1)\" class=\"svg-inline--fa fa-play fa-w-14 sbi_playbtn\" aria-label=\"Play\" aria-hidden=\"true\" data-fa-processed=\"\" data-prefix=\"fa\" data-icon=\"play\" role=\"presentation\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\"><path fill=\"currentColor\" d=\"M424.4 214.7L72.4 6.6C43.8-10.3 0 6.1 0 47.9V464c0 37.5 40.7 60.1 72.4 41.3l352-208c31.4-18.5 31.5-64.1 0-82.6z\"><\/path><\/svg>            <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"How can we calculate a total power consumption and efficiency during electronic design phase? How can we warn about the overload of some power components?\n\nThere are many different possibilities that begin from paper and pen, Excel table and up to special development tool.\n\nI almost always use Excel tablets, but I have found another tool that can help in system power design of any projects, especially if there are many different voltages.\n\nThis is LT Power Planner tool from Analog Devices. it is an interesting and visual tool that is easy to use. It can be used regardless of the component manufacturers, but it can be more useful in a detailed analysis if you use chips from AD.\n.\n.\n.\n#spelex #analogdevices #lineartechnology #ltpowerplanner #electricaldesign #digitalelectronics #analogelectronics\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_image sbi_new sbi_transition\" id=\"sbi_18124369282276605\" data-date=\"1649934914\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CcVFV3zrT3V\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/278386581_355467679862150_277310416628455798_n.webp?stp=dst-jpg_tt6&#038;_nc_cat=100&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=wQLt6vS5nFcQ7kNvgGiQ6Lj&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYBQRAZX5vHz-ep9_4kj6sZhOPFm9YhRYjSIFOFf5PUNxg&#038;oe=6756985F\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278386581_355467679862150_277310416628455798_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=wQLt6vS5nFcQ7kNvgGiQ6Lj&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBQRAZX5vHz-ep9_4kj6sZhOPFm9YhRYjSIFOFf5PUNxg&amp;oe=6756985F&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278386581_355467679862150_277310416628455798_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=wQLt6vS5nFcQ7kNvgGiQ6Lj&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBQRAZX5vHz-ep9_4kj6sZhOPFm9YhRYjSIFOFf5PUNxg&amp;oe=6756985F&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278386581_355467679862150_277310416628455798_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=wQLt6vS5nFcQ7kNvgGiQ6Lj&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBQRAZX5vHz-ep9_4kj6sZhOPFm9YhRYjSIFOFf5PUNxg&amp;oe=6756985F&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278386581_355467679862150_277310416628455798_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=wQLt6vS5nFcQ7kNvgGiQ6Lj&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBQRAZX5vHz-ep9_4kj6sZhOPFm9YhRYjSIFOFf5PUNxg&amp;oe=6756985F&quot;}\">\r\n            <span class=\"sbi-screenreader\">Wilkilson RF power splitter\/combiner based on lump<\/span>\r\n            \t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"Wilkilson RF power splitter\/combiner based on lumped components.\n.\n.\n.\n#spelex\n#electronicengineer #electronicdesign\n#circuitboard #pcb #pcbdesign #rf\n#rfdesign #analogdevices #we #w\u00fcrthelektronik\n#wilkinson\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_video sbi_new sbi_transition\" id=\"sbi_17983132471978534\" data-date=\"1679522407\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/reel\/CqG286bApes\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.36329-15\/336952601_573150738124850_5481943087258242055_n.jpg?_nc_cat=107&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=nSCxNTJNBw4Q7kNvgExsTsC&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYAkMyP-PLL43sPMePbbDacPWCYiUxdQlZ-HbfYoB4q5EQ&#038;oe=67568205\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/336952601_573150738124850_5481943087258242055_n.jpg?_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=nSCxNTJNBw4Q7kNvgExsTsC&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAkMyP-PLL43sPMePbbDacPWCYiUxdQlZ-HbfYoB4q5EQ&amp;oe=67568205&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/336952601_573150738124850_5481943087258242055_n.jpg?_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=nSCxNTJNBw4Q7kNvgExsTsC&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAkMyP-PLL43sPMePbbDacPWCYiUxdQlZ-HbfYoB4q5EQ&amp;oe=67568205&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/336952601_573150738124850_5481943087258242055_n.jpg?_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=nSCxNTJNBw4Q7kNvgExsTsC&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAkMyP-PLL43sPMePbbDacPWCYiUxdQlZ-HbfYoB4q5EQ&amp;oe=67568205&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/336952601_573150738124850_5481943087258242055_n.jpg?_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=nSCxNTJNBw4Q7kNvgExsTsC&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAkMyP-PLL43sPMePbbDacPWCYiUxdQlZ-HbfYoB4q5EQ&amp;oe=67568205&quot;}\">\r\n            <span class=\"sbi-screenreader\">The phase lock loop (PLL) for the external low jit<\/span>\r\n            \t        <svg style=\"color: rgba(255,255,255,1)\" class=\"svg-inline--fa fa-play fa-w-14 sbi_playbtn\" aria-label=\"Play\" aria-hidden=\"true\" data-fa-processed=\"\" data-prefix=\"fa\" data-icon=\"play\" role=\"presentation\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\"><path fill=\"currentColor\" d=\"M424.4 214.7L72.4 6.6C43.8-10.3 0 6.1 0 47.9V464c0 37.5 40.7 60.1 72.4 41.3l352-208c31.4-18.5 31.5-64.1 0-82.6z\"><\/path><\/svg>            <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"The phase lock loop (PLL) for the external low jitter VCXO 100MHz was implemented (see my previous post) and tested.\r\nThe PLL was designed using VHDL primitives on FPGA Cyclon V from Intel (Altera).\r\n\r\n4 LEDs show the locking sequence. They connected to the same 4 lock detection modules, but with different locking time.\r\n\r\nMultimeter is connected at the point where the output of the loop filter is connected to the VCXO. At the end of the video is visible that the VCXO input is very sensitive to the different disturbances. The wire of the multimeter works as an antenna and it breaks the stabilization of the PLL.\r\n\r\nThe #VHDL code will be used in my Software Defined Radio (SDR) hobby project.\r\n.\r\n.\n.\r\n#spelex #altera\r#fpga #Intel #terasic\r#radioelectronics #de1soc #cyclone\r#analogelectronics #digitalelectronics\r#rfdesign #sdr #hamradio #radioamateur #pll #vcxo\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_18000190219429662\" data-date=\"1651820121\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CdNRFrkNuTt\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/280126456_4730746333698662_8275300469619085035_n.webp?stp=dst-jpg&#038;_nc_cat=104&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=8BdSe0vWFG8Q7kNvgFy0TP7&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDXFgnB6lvQlRAhKJNrjpmGF3iGbK-eCxRxnNtr_d91sQ&#038;oe=67566B9D\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280126456_4730746333698662_8275300469619085035_n.webp?stp=dst-jpg&amp;_nc_cat=104&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=8BdSe0vWFG8Q7kNvgFy0TP7&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDXFgnB6lvQlRAhKJNrjpmGF3iGbK-eCxRxnNtr_d91sQ&amp;oe=67566B9D&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280126456_4730746333698662_8275300469619085035_n.webp?stp=dst-jpg&amp;_nc_cat=104&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=8BdSe0vWFG8Q7kNvgFy0TP7&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDXFgnB6lvQlRAhKJNrjpmGF3iGbK-eCxRxnNtr_d91sQ&amp;oe=67566B9D&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280126456_4730746333698662_8275300469619085035_n.webp?stp=dst-jpg&amp;_nc_cat=104&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=8BdSe0vWFG8Q7kNvgFy0TP7&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDXFgnB6lvQlRAhKJNrjpmGF3iGbK-eCxRxnNtr_d91sQ&amp;oe=67566B9D&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280126456_4730746333698662_8275300469619085035_n.webp?stp=dst-jpg&amp;_nc_cat=104&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=8BdSe0vWFG8Q7kNvgFy0TP7&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDXFgnB6lvQlRAhKJNrjpmGF3iGbK-eCxRxnNtr_d91sQ&amp;oe=67566B9D&quot;}\">\r\n            <span class=\"sbi-screenreader\">A new EMI\/EMC issue has been resolved during EMI t<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"A new EMI\/EMC issue has been resolved during EMI troubleshooting.\nThe list with typical resolved EMI\/EMC problems is on the website: www.spelex-i.com\n\nPROJECT: \nComputer Module of a Vending Machine.\n\nDESCRIPTION OF THE PROBLEM: \nThe pre-compliance test for EMI Radiated Emission failed by around 6-8 dB in the 120 MHz range.\n\nSOURCE OF THE PROBLEM:\nThere was a signal integrity problem of the high speed interfaces which caused the EMI problem.\n.\n.\n.\n#spelex\n#emc #emv #emi #emcconsulting\n#emcconcept \n#electromagneticcompatibility\n#emitroubleshooting\n#highspeedsignal\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_image sbi_new sbi_transition\" id=\"sbi_18212464876136097\" data-date=\"1643966635\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CZjNwNdrSaY\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/258854670_1018787232316041_7859762147205387421_n.webp?stp=dst-jpg&#038;_nc_cat=107&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=BTHDzMGSGW0Q7kNvgGzYfcE&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDkvdv2eQeXk4g8A8QJ0uHKiw_4IWQ67urbAmGEIUI2lw&#038;oe=67568A92\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/258854670_1018787232316041_7859762147205387421_n.webp?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=BTHDzMGSGW0Q7kNvgGzYfcE&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDkvdv2eQeXk4g8A8QJ0uHKiw_4IWQ67urbAmGEIUI2lw&amp;oe=67568A92&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/258854670_1018787232316041_7859762147205387421_n.webp?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=BTHDzMGSGW0Q7kNvgGzYfcE&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDkvdv2eQeXk4g8A8QJ0uHKiw_4IWQ67urbAmGEIUI2lw&amp;oe=67568A92&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/258854670_1018787232316041_7859762147205387421_n.webp?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=BTHDzMGSGW0Q7kNvgGzYfcE&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDkvdv2eQeXk4g8A8QJ0uHKiw_4IWQ67urbAmGEIUI2lw&amp;oe=67568A92&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/258854670_1018787232316041_7859762147205387421_n.webp?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=BTHDzMGSGW0Q7kNvgGzYfcE&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDkvdv2eQeXk4g8A8QJ0uHKiw_4IWQ67urbAmGEIUI2lw&amp;oe=67568A92&quot;}\">\r\n            <span class=\"sbi-screenreader\">Installed TFT Displays on DE1-SoC (FPGA +ARM) Deve<\/span>\r\n            \t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"Installed TFT Displays on DE1-SoC (FPGA +ARM) Development Kit.\n.\n.\n.\n#spelex #electronicsengineering #electronicdesign\n#circuitboard #digitalelectronics #highspeedcircuit\n#fpga #altera #cyclone #intel #terasic\n#tft #tftdisplay\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17871296099847818\" data-date=\"1677265620\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CpDmho4rFnI\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/333212026_582255457138555_7487659093094569525_n.webp?stp=dst-jpg&#038;_nc_cat=100&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=0kwzOqg1KCYQ7kNvgHhhbrH&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYAfOfBo2D17YYJVUKoHKk4UmlAev2oAcYKE_p3MwY7MFA&#038;oe=67567EAE\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/333212026_582255457138555_7487659093094569525_n.webp?stp=dst-jpg&amp;_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=0kwzOqg1KCYQ7kNvgHhhbrH&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAfOfBo2D17YYJVUKoHKk4UmlAev2oAcYKE_p3MwY7MFA&amp;oe=67567EAE&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/333212026_582255457138555_7487659093094569525_n.webp?stp=dst-jpg&amp;_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=0kwzOqg1KCYQ7kNvgHhhbrH&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAfOfBo2D17YYJVUKoHKk4UmlAev2oAcYKE_p3MwY7MFA&amp;oe=67567EAE&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/333212026_582255457138555_7487659093094569525_n.webp?stp=dst-jpg&amp;_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=0kwzOqg1KCYQ7kNvgHhhbrH&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAfOfBo2D17YYJVUKoHKk4UmlAev2oAcYKE_p3MwY7MFA&amp;oe=67567EAE&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/333212026_582255457138555_7487659093094569525_n.webp?stp=dst-jpg&amp;_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=0kwzOqg1KCYQ7kNvgHhhbrH&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAfOfBo2D17YYJVUKoHKk4UmlAev2oAcYKE_p3MwY7MFA&amp;oe=67567EAE&quot;}\">\r\n            <span class=\"sbi-screenreader\">A new EMI\/EMC issue has been resolved during EMI t<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"A new EMI\/EMC issue has been resolved during EMI troubleshooting.\n\r\nThe list with typical resolved EMI\/EMC problems is on the website: www.spelex-i.com\r\n\r\nPROJECT: \r\nInstrument Electronics of a Space System (Spacecraft)\r\n\r\nDESCRIPTION OF THE PROBLEM: \r\nThe electronic module generated a high level of Common-Mode (CM) Conducted Emissions (CE) at the primary power side of the DC\/DC converter.\r\n\r\nSOURCE OF THE PROBLEM:\r\nUnwanted current spikes occured during nominal system operation. The generated EMI propagated through the system and appeared on the primary input lines. The primary side of the DC\/DC converter requires optimization (filtering).\r\n.\r\n.\r\n.\r\n#spelex\r\n#emc #emv #emi #emcconsulting\r\n#emcconcept #emi #filter\r\n#electromagneticcompatibility\r\n#emitroubleshooting\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_18027339049360597\" data-date=\"1649097465\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/Cb8ICMjr8NT\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/277840619_3185978295024655_1714383862961805291_n.webp?stp=dst-jpg&#038;_nc_cat=104&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=v2xD21WhZf4Q7kNvgHbq8m0&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYB-fMR7Qgiilf64lEkRZcG8QIbHY-HxZ_IzXTcrhyP0PA&#038;oe=67566DA3\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/277840619_3185978295024655_1714383862961805291_n.webp?stp=dst-jpg&amp;_nc_cat=104&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=v2xD21WhZf4Q7kNvgHbq8m0&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYB-fMR7Qgiilf64lEkRZcG8QIbHY-HxZ_IzXTcrhyP0PA&amp;oe=67566DA3&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/277840619_3185978295024655_1714383862961805291_n.webp?stp=dst-jpg&amp;_nc_cat=104&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=v2xD21WhZf4Q7kNvgHbq8m0&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYB-fMR7Qgiilf64lEkRZcG8QIbHY-HxZ_IzXTcrhyP0PA&amp;oe=67566DA3&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/277840619_3185978295024655_1714383862961805291_n.webp?stp=dst-jpg&amp;_nc_cat=104&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=v2xD21WhZf4Q7kNvgHbq8m0&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYB-fMR7Qgiilf64lEkRZcG8QIbHY-HxZ_IzXTcrhyP0PA&amp;oe=67566DA3&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/277840619_3185978295024655_1714383862961805291_n.webp?stp=dst-jpg&amp;_nc_cat=104&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=v2xD21WhZf4Q7kNvgHbq8m0&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYB-fMR7Qgiilf64lEkRZcG8QIbHY-HxZ_IzXTcrhyP0PA&amp;oe=67566DA3&quot;}\">\r\n            <span class=\"sbi-screenreader\">A new EMI\/EMC issue has been resolved during EMI t<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"A new EMI\/EMC issue has been resolved during EMI troubleshooting.\nThe list with typical resolved EMI\/EMC problems is on the website: www.spelex-i.com\n\nPROJECT: \nSecurity System.\n\nDESCRIPTION OF THE PROBLEM: \nIncorrect operation of the system due to \u201emagic\u201d disturbances related to the weather. The system was in the production phase. The requirement was to learn from the issues in the current release, implementing fixes and increasing quality in the subsequent release.\n\nSOURCE OF THE PROBLEM:\nIncorrect system behaviour due to problems with ESD Immunity at input\/output signals.\n.\n.\n.\n#spelex\n#emc #emv #emi #emcconsulting\n#emcconcept \n#electromagneticcompatibility\n#emitroubleshooting\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_image sbi_new sbi_transition\" id=\"sbi_17953953251281135\" data-date=\"1676322784\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CongNWPrPXn\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/330397965_492805626356888_5712824639539383595_n.webp?stp=dst-jpg&#038;_nc_cat=107&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=Z_bCeSX3ekAQ7kNvgFMDMP_&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYCzj6FVPyR5C3m3oFYgZjXxm2Wm-hF9Yk9JjZlct2StlQ&#038;oe=67567BA4\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/330397965_492805626356888_5712824639539383595_n.webp?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=Z_bCeSX3ekAQ7kNvgFMDMP_&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCzj6FVPyR5C3m3oFYgZjXxm2Wm-hF9Yk9JjZlct2StlQ&amp;oe=67567BA4&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/330397965_492805626356888_5712824639539383595_n.webp?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=Z_bCeSX3ekAQ7kNvgFMDMP_&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCzj6FVPyR5C3m3oFYgZjXxm2Wm-hF9Yk9JjZlct2StlQ&amp;oe=67567BA4&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/330397965_492805626356888_5712824639539383595_n.webp?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=Z_bCeSX3ekAQ7kNvgFMDMP_&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCzj6FVPyR5C3m3oFYgZjXxm2Wm-hF9Yk9JjZlct2StlQ&amp;oe=67567BA4&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/330397965_492805626356888_5712824639539383595_n.webp?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=Z_bCeSX3ekAQ7kNvgFMDMP_&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYCzj6FVPyR5C3m3oFYgZjXxm2Wm-hF9Yk9JjZlct2StlQ&amp;oe=67567BA4&quot;}\">\r\n            <span class=\"sbi-screenreader\">Any clocked interfaces are a source of potential e<\/span>\r\n            \t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"Any clocked interfaces are a source of potential electromagnetic interference (EMI). The EMC problem may not arise if all circuit and PCB design rules are followed. \r\n\r\nIf it is not possible to make a redesign, it is possible to reduce the level of interference by turning off clock of SPI interface.\r\nThis can be done if it doesn&#039;t need frequently update the parameters of the connected SPI devices.\r\n\r\nI designed SPI Master driver, where I can select between the burst mode and update mode.\r\n\r\nBurst mode - clock is enabled and sending always the data to MOSI.\n\r\nUpdate mode - the clock and MOSI will be active only if the previous sent data is different to the actual.\r\n\r\nThis SPI diver was developed using the VHDL language for FPGAs in my hobby project Software Defined Radio (SDR).\n\r\nReal tests of the EMI levels (for the two SPI modes) and their impact on the received and demodulated signal will be shown in the following posts.\r\n.\r\n.\r\n.\r\n#spelex #emi #emc #emv #electromagneticcompatibility  #electronicsprojects #fpga #radioelectronics #analogelectronics #digitalelectronics #trx #tranceiver #receiver #spi #vhdl #sdr #hamradio #radioamateur #modelsim\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17916908264686893\" data-date=\"1677366788\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CpGnfT5tTss\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/332914909_159445270228220_7760605860810764931_n.webp?stp=dst-jpg&#038;_nc_cat=110&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=a1TyWy7hLEAQ7kNvgH52aGT&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYA_7InkIk1kBajDqCifCYQ3Cxwd1DsEV-WqJXA9_25GQg&#038;oe=675687D5\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/332914909_159445270228220_7760605860810764931_n.webp?stp=dst-jpg&amp;_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=a1TyWy7hLEAQ7kNvgH52aGT&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA_7InkIk1kBajDqCifCYQ3Cxwd1DsEV-WqJXA9_25GQg&amp;oe=675687D5&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/332914909_159445270228220_7760605860810764931_n.webp?stp=dst-jpg&amp;_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=a1TyWy7hLEAQ7kNvgH52aGT&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA_7InkIk1kBajDqCifCYQ3Cxwd1DsEV-WqJXA9_25GQg&amp;oe=675687D5&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/332914909_159445270228220_7760605860810764931_n.webp?stp=dst-jpg&amp;_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=a1TyWy7hLEAQ7kNvgH52aGT&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA_7InkIk1kBajDqCifCYQ3Cxwd1DsEV-WqJXA9_25GQg&amp;oe=675687D5&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/332914909_159445270228220_7760605860810764931_n.webp?stp=dst-jpg&amp;_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=a1TyWy7hLEAQ7kNvgH52aGT&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA_7InkIk1kBajDqCifCYQ3Cxwd1DsEV-WqJXA9_25GQg&amp;oe=675687D5&quot;}\">\r\n            <span class=\"sbi-screenreader\">This figure shows what to do with the ground plane<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"This figure shows what to do with the ground plane under the #DC blocking capacitors in the #high-speed interface circuit.\r\n\r\nThe plane underneath the pads of DC blocking capacitors should be removed, as highlighted in the\rfollowing figure, to match the impedance of the pad and maintain signal integrity.\r\n\r\nThe picture is from the RTG4 #FPGA Datasheet (#Microsemi \/ #Microchip)\r\n.\r\n.\r\n.\r\n#spelex #emcconcept #emitroubleshooting #pcb #pcbdesign #digitalelectronics #digitalelectronics #electronics #emc #emv #emi #electromagneticcompatibility #grounding #groundingconcept #groundbouncing #signalintegrity\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17951715271786863\" data-date=\"1649444767\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CcGeddArXl6\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/278114188_688646899247811_5549457651116573951_n.webp?stp=dst-jpg&#038;_nc_cat=107&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=DPiJ0iBCFAwQ7kNvgFaOcPL&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYAOhHFQaBxAcHHZJrITtTaGA3fjVfMZ4Mgr_ISYBWUnlQ&#038;oe=67569E2E\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278114188_688646899247811_5549457651116573951_n.webp?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=DPiJ0iBCFAwQ7kNvgFaOcPL&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAOhHFQaBxAcHHZJrITtTaGA3fjVfMZ4Mgr_ISYBWUnlQ&amp;oe=67569E2E&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278114188_688646899247811_5549457651116573951_n.webp?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=DPiJ0iBCFAwQ7kNvgFaOcPL&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAOhHFQaBxAcHHZJrITtTaGA3fjVfMZ4Mgr_ISYBWUnlQ&amp;oe=67569E2E&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278114188_688646899247811_5549457651116573951_n.webp?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=DPiJ0iBCFAwQ7kNvgFaOcPL&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAOhHFQaBxAcHHZJrITtTaGA3fjVfMZ4Mgr_ISYBWUnlQ&amp;oe=67569E2E&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/278114188_688646899247811_5549457651116573951_n.webp?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=DPiJ0iBCFAwQ7kNvgFaOcPL&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAOhHFQaBxAcHHZJrITtTaGA3fjVfMZ4Mgr_ISYBWUnlQ&amp;oe=67569E2E&quot;}\">\r\n            <span class=\"sbi-screenreader\">The signal integrity (SI) of the JTAG interface is<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"The signal integrity (SI) of the JTAG interface is just as important as that of other high speed interfaces.\n\nThe photo shows a self-made JTAG adapter cable, which was made without due consideration the integrity of the signal. Worst of all, the PCB was also designed with no regard for the signal integrity of the JTAG interface. The idea was that JTAG has a low clock frwquency and that signal integrity is not worth paying attention to.\n\nSome roughting errors on the #PCB and ill-conceived  adapter cable led to the fact that the FPGA was not programmed.\n\nThis JTAG connection was used to program Flash based #FPGA (Microsemi). The programmer (FlashPro4) generates a 4 MHz clock signal by default, but can be reduces to 1 MHz.\n\nThe FPGA programming software installed on the PC is so smart that it identified the Signal Integrity Problem and reported it to the developer. \n(See picture)\n\nReducing the JTAG clock frequency to 1 MHz only helped to hide \ud83d\ude42 the message about the signal integrity problem. The FPGA was not properly programmed and the tool showed a problem during the FPGA check. (See picture)\n\nAt the end, the problem was identified and solved.\nIn the next posts, I will show what was the error on the PCB.\n.\n.\n.\n#spelex #emi #emc \n#emitroubleshooting\n#electromagneticcompatibility \n#emcconsulting \n#cable #jtag #si\n#signalintegrity\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_video sbi_new sbi_transition\" id=\"sbi_17959705151259099\" data-date=\"1679608976\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/reel\/CqJcGOxgcEJ\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.36329-15\/337311181_231516916073576_590083564157753735_n.jpg?_nc_cat=101&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=jqQgzqvDP3AQ7kNvgG1fmon&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYAUkGp96NiVRX6joUUTSHFCW5Gp7yYnKDUuUGGXTl2t0A&#038;oe=67566FC6\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/337311181_231516916073576_590083564157753735_n.jpg?_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=jqQgzqvDP3AQ7kNvgG1fmon&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAUkGp96NiVRX6joUUTSHFCW5Gp7yYnKDUuUGGXTl2t0A&amp;oe=67566FC6&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/337311181_231516916073576_590083564157753735_n.jpg?_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=jqQgzqvDP3AQ7kNvgG1fmon&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAUkGp96NiVRX6joUUTSHFCW5Gp7yYnKDUuUGGXTl2t0A&amp;oe=67566FC6&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/337311181_231516916073576_590083564157753735_n.jpg?_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=jqQgzqvDP3AQ7kNvgG1fmon&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAUkGp96NiVRX6joUUTSHFCW5Gp7yYnKDUuUGGXTl2t0A&amp;oe=67566FC6&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/337311181_231516916073576_590083564157753735_n.jpg?_nc_cat=101&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=jqQgzqvDP3AQ7kNvgG1fmon&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAUkGp96NiVRX6joUUTSHFCW5Gp7yYnKDUuUGGXTl2t0A&amp;oe=67566FC6&quot;}\">\r\n            <span class=\"sbi-screenreader\">Locking the phase lock loop (PLL) from my previous<\/span>\r\n            \t        <svg style=\"color: rgba(255,255,255,1)\" class=\"svg-inline--fa fa-play fa-w-14 sbi_playbtn\" aria-label=\"Play\" aria-hidden=\"true\" data-fa-processed=\"\" data-prefix=\"fa\" data-icon=\"play\" role=\"presentation\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\"><path fill=\"currentColor\" d=\"M424.4 214.7L72.4 6.6C43.8-10.3 0 6.1 0 47.9V464c0 37.5 40.7 60.1 72.4 41.3l352-208c31.4-18.5 31.5-64.1 0-82.6z\"><\/path><\/svg>            <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"Locking the phase lock loop (PLL) from my previous posts.\r\n\r\nThe #VHDL code will be used in my Software Defined Radio (SDR) hobby project.\r\n.\r\n.\n.\r\n#spelex #altera\r#fpga #Intel #terasic\r#radioelectronics #de1soc #cyclone\r#analogelectronics #digitalelectronics\r#rfdesign #sdr #hamradio #radioamateur #pll #vcxo\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_video sbi_new sbi_transition\" id=\"sbi_17940320932804296\" data-date=\"1642854712\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/reel\/CZCEy4hIZ62\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/272194934_438936121253214_6781569715898420614_n.jpg?_nc_cat=107&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=FRLjg6YVshkQ7kNvgF2vrc9&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDsNDyVuJFgJhEgNk2zc5n8elcGFbk6WfjeaktPqmt9DA&#038;oe=675690CF\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272194934_438936121253214_6781569715898420614_n.jpg?_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=FRLjg6YVshkQ7kNvgF2vrc9&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDsNDyVuJFgJhEgNk2zc5n8elcGFbk6WfjeaktPqmt9DA&amp;oe=675690CF&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272194934_438936121253214_6781569715898420614_n.jpg?_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=FRLjg6YVshkQ7kNvgF2vrc9&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDsNDyVuJFgJhEgNk2zc5n8elcGFbk6WfjeaktPqmt9DA&amp;oe=675690CF&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272194934_438936121253214_6781569715898420614_n.jpg?_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=FRLjg6YVshkQ7kNvgF2vrc9&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDsNDyVuJFgJhEgNk2zc5n8elcGFbk6WfjeaktPqmt9DA&amp;oe=675690CF&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272194934_438936121253214_6781569715898420614_n.jpg?_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=FRLjg6YVshkQ7kNvgF2vrc9&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDsNDyVuJFgJhEgNk2zc5n8elcGFbk6WfjeaktPqmt9DA&amp;oe=675690CF&quot;}\">\r\n            <span class=\"sbi-screenreader\">This interesting PCB simulation video shows how cl<\/span>\r\n            \t        <svg style=\"color: rgba(255,255,255,1)\" class=\"svg-inline--fa fa-play fa-w-14 sbi_playbtn\" aria-label=\"Play\" aria-hidden=\"true\" data-fa-processed=\"\" data-prefix=\"fa\" data-icon=\"play\" role=\"presentation\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\"><path fill=\"currentColor\" d=\"M424.4 214.7L72.4 6.6C43.8-10.3 0 6.1 0 47.9V464c0 37.5 40.7 60.1 72.4 41.3l352-208c31.4-18.5 31.5-64.1 0-82.6z\"><\/path><\/svg>            <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"This interesting PCB simulation video shows how close placed vias to differential high speed traces can affect other traces (crosstalk).\n\nThere is a 3W rule of thumb for high-speed differential signals like LVDS and other. Follow this rule, without any simulations, the signal integrity will not eliminate signal integrity and EMI from these traces will be minimal. \n\nI have seen, during EMI troubleshooting, many digital PCB designs without following this rule of thumb. The signal integrity was fine, up to some frequencies (data rate) and the devices were working fine in a wide temperature range. The LVDS is a pretty reliable interface, which can forgive many errors. \n\nBreaking the symmetry of an LVDS trace due to not following a rule of thumb, creates reflections, changes the skew between P and N in a differential trace, and generates EMI.\n\nBut these generated EMI will be detected only during EMC tests, that is too late. And new PCB design spin will be started... spending money...\n\nI took this video from the Simbeor YouTube channel. (Crosstalk between differential strips and vias)\n.\n.\n.\n#spelex #emi #emc \n#emitroubleshooting\n#emcconsulting #lvds\n#simbeor\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17919543683229567\" data-date=\"1644409801\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CZwbBjyrO8f\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/273582591_246858947502340_3151996342619635814_n.webp?stp=dst-jpg&#038;_nc_cat=105&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=pshmz8lp4-cQ7kNvgGNdzSF&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYBhk65v1X9cJGrW4fuel6Plw_F-YfX3QlZTpFjs96qFSg&#038;oe=67566B81\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273582591_246858947502340_3151996342619635814_n.webp?stp=dst-jpg&amp;_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=pshmz8lp4-cQ7kNvgGNdzSF&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBhk65v1X9cJGrW4fuel6Plw_F-YfX3QlZTpFjs96qFSg&amp;oe=67566B81&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273582591_246858947502340_3151996342619635814_n.webp?stp=dst-jpg&amp;_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=pshmz8lp4-cQ7kNvgGNdzSF&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBhk65v1X9cJGrW4fuel6Plw_F-YfX3QlZTpFjs96qFSg&amp;oe=67566B81&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273582591_246858947502340_3151996342619635814_n.webp?stp=dst-jpg&amp;_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=pshmz8lp4-cQ7kNvgGNdzSF&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBhk65v1X9cJGrW4fuel6Plw_F-YfX3QlZTpFjs96qFSg&amp;oe=67566B81&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/273582591_246858947502340_3151996342619635814_n.webp?stp=dst-jpg&amp;_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=pshmz8lp4-cQ7kNvgGNdzSF&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBhk65v1X9cJGrW4fuel6Plw_F-YfX3QlZTpFjs96qFSg&amp;oe=67566B81&quot;}\">\r\n            <span class=\"sbi-screenreader\">A new EMI\/EMC issue has been resolved during EMI t<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"A new EMI\/EMC issue has been resolved during EMI troubleshooting.\nThe list with typical resolved EMI\/EMC problems is on the website: www.spelex-i.com\n\nPROJECT: \nSmart House System.\n\nDESCRIPTION OF THE PROBLEM: \nPoor voice quality when making a phone call or a voice command.\n\nSOURCE OF THE PROBLEM:\nAn internal EMC problem due to the emission of digital signals causing interference to on the audio intercom system.\n.\n.\n.\n#spelex\n#emc #emv #emi #emcconsulting\n#emcconcept \n#electromagneticcompatibility\n#emitroubleshooting\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_video sbi_new sbi_transition\" id=\"sbi_17993875663620879\" data-date=\"1671664705\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/reel\/Cmcq454I-3z\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.36329-15\/321049430_1332070624287776_3695145290328341502_n.jpg?_nc_cat=100&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=buQKva26LlwQ7kNvgGR8gfS&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYBscfTwC5vvuLFos3ZeByJwpW2DZCO07lY7AvsJtQHMTw&#038;oe=67568D3E\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/321049430_1332070624287776_3695145290328341502_n.jpg?_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=buQKva26LlwQ7kNvgGR8gfS&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBscfTwC5vvuLFos3ZeByJwpW2DZCO07lY7AvsJtQHMTw&amp;oe=67568D3E&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/321049430_1332070624287776_3695145290328341502_n.jpg?_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=buQKva26LlwQ7kNvgGR8gfS&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBscfTwC5vvuLFos3ZeByJwpW2DZCO07lY7AvsJtQHMTw&amp;oe=67568D3E&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/321049430_1332070624287776_3695145290328341502_n.jpg?_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=buQKva26LlwQ7kNvgGR8gfS&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBscfTwC5vvuLFos3ZeByJwpW2DZCO07lY7AvsJtQHMTw&amp;oe=67568D3E&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/321049430_1332070624287776_3695145290328341502_n.jpg?_nc_cat=100&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=buQKva26LlwQ7kNvgGR8gfS&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBscfTwC5vvuLFos3ZeByJwpW2DZCO07lY7AvsJtQHMTw&amp;oe=67568D3E&quot;}\">\r\n            <span class=\"sbi-screenreader\">This is an example of dimming 7-segment LED indica<\/span>\r\n            \t        <svg style=\"color: rgba(255,255,255,1)\" class=\"svg-inline--fa fa-play fa-w-14 sbi_playbtn\" aria-label=\"Play\" aria-hidden=\"true\" data-fa-processed=\"\" data-prefix=\"fa\" data-icon=\"play\" role=\"presentation\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\"><path fill=\"currentColor\" d=\"M424.4 214.7L72.4 6.6C43.8-10.3 0 6.1 0 47.9V464c0 37.5 40.7 60.1 72.4 41.3l352-208c31.4-18.5 31.5-64.1 0-82.6z\"><\/path><\/svg>            <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"This is an example of dimming 7-segment LED indicators using PWM. I tested my #VHDL code, which will be used in my Software Defined Radio (SDR) hobby project.\n.\n.\n.\n#spelex #electronicsprojects\n#altiumdesigner #fpga #Intel #terasic\n#radioelectronics #de1soc #cyclone\n#analogelectronics #digitalelectronics #rf #trx #tranceiver #receiver #pwm #dimming #7segment\n#rfdesign #sdr #highspeedcircuit\n#hamradio #radioamateur\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17960581061098667\" data-date=\"1667240136\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CkY0bv2Lw-J\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/313275064_802365994328606_5430645773132402077_n.webp?stp=dst-jpg&#038;_nc_cat=110&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=dPupPUAM-QMQ7kNvgHVID-V&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDxsN5zfZwWBE-hNAZbnsJSjqa9jY1xpfoEPUIRoouS4w&#038;oe=675678FF\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/313275064_802365994328606_5430645773132402077_n.webp?stp=dst-jpg&amp;_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=dPupPUAM-QMQ7kNvgHVID-V&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDxsN5zfZwWBE-hNAZbnsJSjqa9jY1xpfoEPUIRoouS4w&amp;oe=675678FF&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/313275064_802365994328606_5430645773132402077_n.webp?stp=dst-jpg&amp;_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=dPupPUAM-QMQ7kNvgHVID-V&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDxsN5zfZwWBE-hNAZbnsJSjqa9jY1xpfoEPUIRoouS4w&amp;oe=675678FF&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/313275064_802365994328606_5430645773132402077_n.webp?stp=dst-jpg&amp;_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=dPupPUAM-QMQ7kNvgHVID-V&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDxsN5zfZwWBE-hNAZbnsJSjqa9jY1xpfoEPUIRoouS4w&amp;oe=675678FF&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/313275064_802365994328606_5430645773132402077_n.webp?stp=dst-jpg&amp;_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=dPupPUAM-QMQ7kNvgHVID-V&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDxsN5zfZwWBE-hNAZbnsJSjqa9jY1xpfoEPUIRoouS4w&amp;oe=675678FF&quot;}\">\r\n            <span class=\"sbi-screenreader\">A new EMI\/EMC issue has been resolved during EMI t<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"A new EMI\/EMC issue has been resolved during EMI troubleshooting.\r\nThe list with typical resolved EMI\/EMC problems is on the website: www.spelex-i.com\r\n\r\nPROJECT: \r\nTiny Tracker System (IoT).\r\n\r\nDESCRIPTION OF THE PROBLEM: \r\nThe device did not receive a stable GNSS signal. An evaluation board with such a chip and antenna works quite well.\r\n\r\nSOURCE OF THE PROBLEM:\r\nThe sensitivity of the GNSS (GPS) receiver was significantly reduced due to common grounding issues between the GNSS module, the LNA, the MCU, the DC\/DC converter and the RF transceiver.\r\n\r\n.\r\n.\r\n.\r\n#spelex\r\n#emc #emv #emi #emcconsulting\r\n#emcconcept  #groundingconcept\r\n#electromagneticcompatibility\r\n#emitroubleshooting #grounding\r\n#highspeedsignal #fr #gnss #gps #mcu #lna #tracker #iot\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_video sbi_new sbi_transition\" id=\"sbi_17973454846895298\" data-date=\"1667934191\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/reel\/Cktfh9YgjtN\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.36329-15\/314625157_831727994834464_6773789648055475851_n.jpg?_nc_cat=110&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=TuHCY1s7rHYQ7kNvgEjrGkC&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYD2cegkzEZVqfrF3MzIq1JUHX9GNL5UHBo485Pf-g06cg&#038;oe=67567FF1\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/314625157_831727994834464_6773789648055475851_n.jpg?_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=TuHCY1s7rHYQ7kNvgEjrGkC&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYD2cegkzEZVqfrF3MzIq1JUHX9GNL5UHBo485Pf-g06cg&amp;oe=67567FF1&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/314625157_831727994834464_6773789648055475851_n.jpg?_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=TuHCY1s7rHYQ7kNvgEjrGkC&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYD2cegkzEZVqfrF3MzIq1JUHX9GNL5UHBo485Pf-g06cg&amp;oe=67567FF1&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/314625157_831727994834464_6773789648055475851_n.jpg?_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=TuHCY1s7rHYQ7kNvgEjrGkC&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYD2cegkzEZVqfrF3MzIq1JUHX9GNL5UHBo485Pf-g06cg&amp;oe=67567FF1&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.36329-15\\\/314625157_831727994834464_6773789648055475851_n.jpg?_nc_cat=110&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=TuHCY1s7rHYQ7kNvgEjrGkC&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYD2cegkzEZVqfrF3MzIq1JUHX9GNL5UHBo485Pf-g06cg&amp;oe=67567FF1&quot;}\">\r\n            <span class=\"sbi-screenreader\">Matching input(S11) and output(S22) impedance of a<\/span>\r\n            \t        <svg style=\"color: rgba(255,255,255,1)\" class=\"svg-inline--fa fa-play fa-w-14 sbi_playbtn\" aria-label=\"Play\" aria-hidden=\"true\" data-fa-processed=\"\" data-prefix=\"fa\" data-icon=\"play\" role=\"presentation\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\"><path fill=\"currentColor\" d=\"M424.4 214.7L72.4 6.6C43.8-10.3 0 6.1 0 47.9V464c0 37.5 40.7 60.1 72.4 41.3l352-208c31.4-18.5 31.5-64.1 0-82.6z\"><\/path><\/svg>            <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"Matching input(S11) and output(S22) impedance of a narrow band RF Power Amplifier.\nThe bottom display shows the transfer characteristic(S21).\n.\n.\n.\n#spelex\n#electronicengineer #electronicdesign\n#rf #rfdesign #vna #vectornetworkanalyzer\n#rfamplifier #amplifier #poweramplifier\n#sparameter\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_video sbi_new sbi_transition\" id=\"sbi_17925215000841782\" data-date=\"1709994765\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/reel\/C4S_mXdtv5V\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/432155417_1180257360021812_1821695503990398815_n.jpg?_nc_cat=105&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=OkeDZUvrETMQ7kNvgEGU1Ew&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDWp6HqMEFZNcsaxIsAvyEGhz3HRfoeMk0me3-f9lRRQg&#038;oe=67568994\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/432155417_1180257360021812_1821695503990398815_n.jpg?_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=OkeDZUvrETMQ7kNvgEGU1Ew&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDWp6HqMEFZNcsaxIsAvyEGhz3HRfoeMk0me3-f9lRRQg&amp;oe=67568994&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/432155417_1180257360021812_1821695503990398815_n.jpg?_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=OkeDZUvrETMQ7kNvgEGU1Ew&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDWp6HqMEFZNcsaxIsAvyEGhz3HRfoeMk0me3-f9lRRQg&amp;oe=67568994&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/432155417_1180257360021812_1821695503990398815_n.jpg?_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=OkeDZUvrETMQ7kNvgEGU1Ew&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDWp6HqMEFZNcsaxIsAvyEGhz3HRfoeMk0me3-f9lRRQg&amp;oe=67568994&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/432155417_1180257360021812_1821695503990398815_n.jpg?_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=OkeDZUvrETMQ7kNvgEGU1Ew&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDWp6HqMEFZNcsaxIsAvyEGhz3HRfoeMk0me3-f9lRRQg&amp;oe=67568994&quot;}\">\r\n            <span class=\"sbi-screenreader\">Narrowband PLL behavior after blowing on VCXO.\nDig<\/span>\r\n            \t        <svg style=\"color: rgba(255,255,255,1)\" class=\"svg-inline--fa fa-play fa-w-14 sbi_playbtn\" aria-label=\"Play\" aria-hidden=\"true\" data-fa-processed=\"\" data-prefix=\"fa\" data-icon=\"play\" role=\"presentation\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\"><path fill=\"currentColor\" d=\"M424.4 214.7L72.4 6.6C43.8-10.3 0 6.1 0 47.9V464c0 37.5 40.7 60.1 72.4 41.3l352-208c31.4-18.5 31.5-64.1 0-82.6z\"><\/path><\/svg>            <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"Narrowband PLL behavior after blowing on VCXO.\nDigital XOR PLL is implemented in FPGA with a passive RC loop filter. VCXO is CVHD-950X-100.000MHz\n\nThis is a part of the Software Defined Radio (SDR).\n.\n.\n.\n#spelex #emcconcept #emitroubleshooting \n#analogelectronics #emc #emv #emi #electromagneticcompatibility #pll #measurements \n#jitter #oscilloscope #FPGA #vcxo #vco #crystek #sdr\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17962681147514816\" data-date=\"1643312064\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CZPtQeLLF8a\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/272708993_446405457207541_6403961978710014455_n.webp?stp=dst-jpg&#038;_nc_cat=105&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=zViikKJgl20Q7kNvgE2-RcX&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYBbpeGEAv9nYGMK6am60hwnh-qIyfnzvk49XxyOu8FlAA&#038;oe=675698AF\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272708993_446405457207541_6403961978710014455_n.webp?stp=dst-jpg&amp;_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=zViikKJgl20Q7kNvgE2-RcX&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBbpeGEAv9nYGMK6am60hwnh-qIyfnzvk49XxyOu8FlAA&amp;oe=675698AF&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272708993_446405457207541_6403961978710014455_n.webp?stp=dst-jpg&amp;_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=zViikKJgl20Q7kNvgE2-RcX&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBbpeGEAv9nYGMK6am60hwnh-qIyfnzvk49XxyOu8FlAA&amp;oe=675698AF&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272708993_446405457207541_6403961978710014455_n.webp?stp=dst-jpg&amp;_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=zViikKJgl20Q7kNvgE2-RcX&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBbpeGEAv9nYGMK6am60hwnh-qIyfnzvk49XxyOu8FlAA&amp;oe=675698AF&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272708993_446405457207541_6403961978710014455_n.webp?stp=dst-jpg&amp;_nc_cat=105&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=zViikKJgl20Q7kNvgE2-RcX&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYBbpeGEAv9nYGMK6am60hwnh-qIyfnzvk49XxyOu8FlAA&amp;oe=675698AF&quot;}\">\r\n            <span class=\"sbi-screenreader\">A new EMI\/EMC issue has been resolved during EMI t<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"A new EMI\/EMC issue has been resolved during EMI troubleshooting.\nThe list with typical resolved EMI\/EMC problems is on the website: www.spelex-i.com\n\nPROJECT: \nHome Automation Controller (Smart House)\n\nDESCRIPTION OF THE PROBLEM: \nThe pre-compliance test for EMI Radiated Emission failed.\n\nSOURCE OF THE PROBLEM:\nSignal Integrity problem on the PCB. Incorrect routing of digital signals when traversing PCB layers.\n.\n.\n.\n#spelex\n#emc #emv #emi #emcconsulting\n#emcconcept \n#electromagneticcompatibility\n#emitroubleshooting #smarthouse\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17915924936349271\" data-date=\"1653720016\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CeF42bstlsn\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/283897765_1167404637381412_7025097042458954224_n.webp?stp=dst-jpg&#038;_nc_cat=106&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=yUJqKjxllecQ7kNvgFkMwu6&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDvsFrSvMZThyDzAi8KM4QWOdVhxEoOhuguIEUezZrcUw&#038;oe=67569C36\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/283897765_1167404637381412_7025097042458954224_n.webp?stp=dst-jpg&amp;_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=yUJqKjxllecQ7kNvgFkMwu6&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDvsFrSvMZThyDzAi8KM4QWOdVhxEoOhuguIEUezZrcUw&amp;oe=67569C36&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/283897765_1167404637381412_7025097042458954224_n.webp?stp=dst-jpg&amp;_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=yUJqKjxllecQ7kNvgFkMwu6&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDvsFrSvMZThyDzAi8KM4QWOdVhxEoOhuguIEUezZrcUw&amp;oe=67569C36&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/283897765_1167404637381412_7025097042458954224_n.webp?stp=dst-jpg&amp;_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=yUJqKjxllecQ7kNvgFkMwu6&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDvsFrSvMZThyDzAi8KM4QWOdVhxEoOhuguIEUezZrcUw&amp;oe=67569C36&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/283897765_1167404637381412_7025097042458954224_n.webp?stp=dst-jpg&amp;_nc_cat=106&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=yUJqKjxllecQ7kNvgFkMwu6&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDvsFrSvMZThyDzAi8KM4QWOdVhxEoOhuguIEUezZrcUw&amp;oe=67569C36&quot;}\">\r\n            <span class=\"sbi-screenreader\">Assembled Wilkilson RF power splitter\/combiner bas<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"Assembled Wilkilson RF power splitter\/combiner based on lumped components.\n.\n.\n.\n#spelex\n#electronicengineer #electronicdesign\n#circuitboard #pcb #pcbdesign #rf\n#rfdesign #analogdevices #we #w\u00fcrthelektronik\n#wilkinson\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17912932424137620\" data-date=\"1641415577\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CYXL_w1Lum2\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/271495569_1273456379816257_4212139617703786919_n.jpg?_nc_cat=102&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=__6OQuA2kaMQ7kNvgHz_D46&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYAOkqcDbJ7TUZlP8A3YQqF0qucwhRYD1pRjpoX3X-vERA&#038;oe=67568C29\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271495569_1273456379816257_4212139617703786919_n.jpg?_nc_cat=102&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=__6OQuA2kaMQ7kNvgHz_D46&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAOkqcDbJ7TUZlP8A3YQqF0qucwhRYD1pRjpoX3X-vERA&amp;oe=67568C29&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271495569_1273456379816257_4212139617703786919_n.jpg?_nc_cat=102&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=__6OQuA2kaMQ7kNvgHz_D46&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAOkqcDbJ7TUZlP8A3YQqF0qucwhRYD1pRjpoX3X-vERA&amp;oe=67568C29&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271495569_1273456379816257_4212139617703786919_n.jpg?_nc_cat=102&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=__6OQuA2kaMQ7kNvgHz_D46&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAOkqcDbJ7TUZlP8A3YQqF0qucwhRYD1pRjpoX3X-vERA&amp;oe=67568C29&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/271495569_1273456379816257_4212139617703786919_n.jpg?_nc_cat=102&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=__6OQuA2kaMQ7kNvgHz_D46&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAOkqcDbJ7TUZlP8A3YQqF0qucwhRYD1pRjpoX3X-vERA&amp;oe=67568C29&quot;}\">\r\n            <span class=\"sbi-screenreader\">A new EMI\/EMC task has been resolved.\nThe list wit<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"A new EMI\/EMC task has been resolved.\nThe list with typical resolved EMI\/EMC problems is on the website: www.spelex-i.com\n\nPROJECT: \nInstrumental Electronic Device of a Space System (Spacecraft)\n\nDESCRIPTION OF THE PROBLEM: \nDevelopment of a grounding concept diagram that describes deliberate grounding separation, minimization of ground loops and reduction of the generation of EMI between modules. This diagram also includes analogue and digital signal groups, shows potential collisions and suggests ways to mitigate potential interference.\n\nSOURCE OF THE PROBLEM:\nThe system was investigated, potential risks were identified and analyzed, and ways to prevent EMC disharmony were proposed. As a result, the concept of the grounding architecture was developed and a detailed report was drawn up.\n.\n.\n.\n#spelex\n#emc #emv #emi #emcconsulting #emcconcept #electromagneticcompatibility\n#emitroubleshooting\n#groundingconzept \n#groundloops\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17864275598720714\" data-date=\"1652429439\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CdfbRVcN6EQ\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/280508077_295244302812340_1647218424093147462_n.webp?stp=dst-jpg&#038;_nc_cat=103&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=tPrw7tmrRlkQ7kNvgHQKdIR&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYAWBZpGZJhNxDOhj_4iFQ4Fhcw_iU68it2sb5_y8r-lWw&#038;oe=675692D5\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280508077_295244302812340_1647218424093147462_n.webp?stp=dst-jpg&amp;_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=tPrw7tmrRlkQ7kNvgHQKdIR&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAWBZpGZJhNxDOhj_4iFQ4Fhcw_iU68it2sb5_y8r-lWw&amp;oe=675692D5&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280508077_295244302812340_1647218424093147462_n.webp?stp=dst-jpg&amp;_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=tPrw7tmrRlkQ7kNvgHQKdIR&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAWBZpGZJhNxDOhj_4iFQ4Fhcw_iU68it2sb5_y8r-lWw&amp;oe=675692D5&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280508077_295244302812340_1647218424093147462_n.webp?stp=dst-jpg&amp;_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=tPrw7tmrRlkQ7kNvgHQKdIR&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAWBZpGZJhNxDOhj_4iFQ4Fhcw_iU68it2sb5_y8r-lWw&amp;oe=675692D5&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280508077_295244302812340_1647218424093147462_n.webp?stp=dst-jpg&amp;_nc_cat=103&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=tPrw7tmrRlkQ7kNvgHQKdIR&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAWBZpGZJhNxDOhj_4iFQ4Fhcw_iU68it2sb5_y8r-lWw&amp;oe=675692D5&quot;}\">\r\n            <span class=\"sbi-screenreader\">A new EMI\/EMC issue has been resolved during EMI t<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"A new EMI\/EMC issue has been resolved during EMI troubleshooting.\nThe list with typical resolved EMI\/EMC problems is on the website: www.spelex-i.com\n\nPROJECT: \nNFC-A (RFID) Communication.\n\nDESCRIPTION OF THE PROBLEM: \nThe pre-compliance EMV test failed. The transmitted NFC waveform had overshoots and is not following the standard.\n\nSOURCE OF THE PROBLEM:\nImpedance matching problem between the antenna and the #RF amplifier.\n.\n.\n.\n#spelex\n#emc #emv #emi #emcconsulting\n#emcconcept \n#electromagneticcompatibility\n#emitroubleshooting\n#rfid #nfc\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_18275058427018857\" data-date=\"1642943379\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CZEuC9ktkyN\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/272485065_142397464858863_9118304664836233762_n.jpg?_nc_cat=111&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=eAJpeS2dFxAQ7kNvgEc8yE-&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDYW2BS1n0oJ6F7DlBJakeMbdJLGYmAc0hzpu3rs97VGA&#038;oe=67569569\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272485065_142397464858863_9118304664836233762_n.jpg?_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=eAJpeS2dFxAQ7kNvgEc8yE-&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDYW2BS1n0oJ6F7DlBJakeMbdJLGYmAc0hzpu3rs97VGA&amp;oe=67569569&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272485065_142397464858863_9118304664836233762_n.jpg?_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=eAJpeS2dFxAQ7kNvgEc8yE-&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDYW2BS1n0oJ6F7DlBJakeMbdJLGYmAc0hzpu3rs97VGA&amp;oe=67569569&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272485065_142397464858863_9118304664836233762_n.jpg?_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=eAJpeS2dFxAQ7kNvgEc8yE-&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDYW2BS1n0oJ6F7DlBJakeMbdJLGYmAc0hzpu3rs97VGA&amp;oe=67569569&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/272485065_142397464858863_9118304664836233762_n.jpg?_nc_cat=111&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=eAJpeS2dFxAQ7kNvgEc8yE-&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDYW2BS1n0oJ6F7DlBJakeMbdJLGYmAc0hzpu3rs97VGA&amp;oe=67569569&quot;}\">\r\n            <span class=\"sbi-screenreader\">These are simulated LVDS signals that are carried <\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"These are simulated LVDS signals that are carried along the printed circuit board. The signal integrity simulation is done in the Hyperlynx program from Mentor. The simulations are not include a PCB influence, that will also change the quality of the differential traces.\n\nI have used for these simulations a worst-case LVDS driver skew scenario 0.3-0.5ns, for different PCB trace length.\nAs a result of this violation the signal integrity of high-speed signals can be damaged. The skew can also be affected by the symmetry of the differential traces, which can be broken by the distance to the differential traces.\n\nThere is also another problem of broken symmetry, an increased level of electromagnetic interference. This was a part of EMC analysis to eliminate electromagnetic interference in a system.\n.\n.\n.\n#spelex #emi #emc \n#emitroubleshooting\n#emcconsulting #lvds\n#hyperlynx #pcb\n#signalintegrity #ti\n#simulation #emcconcept\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_image sbi_new sbi_transition\" id=\"sbi_17851058051743106\" data-date=\"1652087843\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CdVPunWtcK3\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/280456986_1289501714873959_8410490949704392482_n.webp?stp=dst-jpg_tt6&#038;_nc_cat=109&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=ya-iOPY3pTUQ7kNvgFt10kf&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYA8ctpbOdQe-dMMQ2ItieMBj_uXnDUab60cPdgDrxmIjA&#038;oe=675671FB\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280456986_1289501714873959_8410490949704392482_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ya-iOPY3pTUQ7kNvgFt10kf&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA8ctpbOdQe-dMMQ2ItieMBj_uXnDUab60cPdgDrxmIjA&amp;oe=675671FB&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280456986_1289501714873959_8410490949704392482_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ya-iOPY3pTUQ7kNvgFt10kf&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA8ctpbOdQe-dMMQ2ItieMBj_uXnDUab60cPdgDrxmIjA&amp;oe=675671FB&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280456986_1289501714873959_8410490949704392482_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ya-iOPY3pTUQ7kNvgFt10kf&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA8ctpbOdQe-dMMQ2ItieMBj_uXnDUab60cPdgDrxmIjA&amp;oe=675671FB&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/280456986_1289501714873959_8410490949704392482_n.webp?stp=dst-jpg_tt6&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=ya-iOPY3pTUQ7kNvgFt10kf&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYA8ctpbOdQe-dMMQ2ItieMBj_uXnDUab60cPdgDrxmIjA&amp;oe=675671FB&quot;}\">\r\n            <span class=\"sbi-screenreader\">The project is an RF SDR tranceiver (Software Defi<\/span>\r\n            \t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"The project is an RF SDR tranceiver (Software Defined Radio).\n------------\u2010----------------------------\nThe RF design consist of:\n- Digital RF Attenuator\n- 7order RF Low Pass Filter\n- RF Low Noise Amplifier\n- Differential RF Anti-Aliasing Filter\n- ADC 16bits\/105MSPS (LTC2217)\n- Bus Driver - 16bits \n- DAC 14bits - 275MSPS (DAC5672)\n- Reconstraction RF LPF\n- RF Power Amplifier \n- Low Jitter VCXO 100MHz\n- Low Noise Voltage regulators\n\u2010-----------------------------------------\nThe digital board is an EVB from Terasic DE1-SOC with the Intel FPGA \nCyclone V.\n------------------------------------------\n.\n.\n.\n#spelex #electronicsprojects\n#circuitboard #pcb #pcbdesign #altium\n#altiumdesigner #fpga #Intel #terasic\n#radioelectronics #de1soc #cyclone\n#analogelectronics #digitalelectronics #rf #trx #tranceiver #receiver\n#rfdesign #sdr #highspeedcircuit\n#hamradio #radioamateur\n#printedcircuitboard\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_17977960646382071\" data-date=\"1690042837\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/CvAZIgTtW_j\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/361940211_2269423016582259_9147993766067728272_n.heic?stp=dst-jpg&#038;_nc_cat=109&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=YGh04fBwCnMQ7kNvgG-Cyjy&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYAhHoqXEnWuNLAliWaHcKBJ3ZowOipcBfewi9HXYoVESg&#038;oe=6756746E\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/361940211_2269423016582259_9147993766067728272_n.heic?stp=dst-jpg&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=YGh04fBwCnMQ7kNvgG-Cyjy&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAhHoqXEnWuNLAliWaHcKBJ3ZowOipcBfewi9HXYoVESg&amp;oe=6756746E&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/361940211_2269423016582259_9147993766067728272_n.heic?stp=dst-jpg&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=YGh04fBwCnMQ7kNvgG-Cyjy&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAhHoqXEnWuNLAliWaHcKBJ3ZowOipcBfewi9HXYoVESg&amp;oe=6756746E&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/361940211_2269423016582259_9147993766067728272_n.heic?stp=dst-jpg&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=YGh04fBwCnMQ7kNvgG-Cyjy&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAhHoqXEnWuNLAliWaHcKBJ3ZowOipcBfewi9HXYoVESg&amp;oe=6756746E&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/361940211_2269423016582259_9147993766067728272_n.heic?stp=dst-jpg&amp;_nc_cat=109&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=YGh04fBwCnMQ7kNvgG-Cyjy&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYAhHoqXEnWuNLAliWaHcKBJ3ZowOipcBfewi9HXYoVESg&amp;oe=6756746E&quot;}\">\r\n            <span class=\"sbi-screenreader\">This is a 4-Port SuperSpeed Isolated USB 3.0 Hub w<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"This is a 4-Port SuperSpeed Isolated USB 3.0 Hub with up to 5 Gbps transfer speed USB-4630 from Advantech.\r\n\r\nIt was purchased for ground isolation during space electronics testing in the lab.\r\n\r\nSeparate DC\/DC converter of the minicomputer  generated an EMC with a electrical fast transient (EFT) every 5-10 minutes. A fast transient signal propagated across the PCB and the microcontroller hung up. This case exposed the weaknesses in the design (EFT Immunity).\r\n\r\nThe USB isolator shown allowed further testing and analysis of the EMC problem without stopping the project.\r\n\r\nIt was interesting to see how it was possible to realize such a high data rate with galvanic isolation. As you can see from the pictures, capacitive coupling is implemented here.\r\n.\r\n.\r\n.\r\n#spelex #emi #emc \r#emitroubleshooting #pcb #usb\r#systemdesing #advantech\n#grounging #eft #usbhub\n#groundingconcept\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div><div class=\"sbi_item sbi_type_carousel sbi_new sbi_transition\" id=\"sbi_18042889495619767\" data-date=\"1712776728\">\r\n    <div class=\"sbi_photo_wrap\">\r\n        <a class=\"sbi_photo\" href=\"https:\/\/www.instagram.com\/p\/C5l6lv-rJLD\/\" target=\"_blank\" rel=\"noopener nofollow\" data-full-res=\"https:\/\/scontent.cdninstagram.com\/v\/t51.29350-15\/437718725_1466632947589704_374957246167937509_n.heic?stp=dst-jpg&#038;_nc_cat=107&#038;ccb=1-7&#038;_nc_sid=18de74&#038;_nc_ohc=eOVyyc4YYl0Q7kNvgG66cws&#038;_nc_zt=23&#038;_nc_ht=scontent.cdninstagram.com&#038;edm=ANo9K5cEAAAA&#038;_nc_gid=A3iy5JASgSs793lsVWXIFgb&#038;oh=00_AYDBjm3vEbqp3VwdMFCC2-Yt7MtO3v5Xt3b8d1DqYFhK5g&#038;oe=67569649\" data-img-src-set=\"{&quot;d&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/437718725_1466632947589704_374957246167937509_n.heic?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=eOVyyc4YYl0Q7kNvgG66cws&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDBjm3vEbqp3VwdMFCC2-Yt7MtO3v5Xt3b8d1DqYFhK5g&amp;oe=67569649&quot;,&quot;150&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/437718725_1466632947589704_374957246167937509_n.heic?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=eOVyyc4YYl0Q7kNvgG66cws&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDBjm3vEbqp3VwdMFCC2-Yt7MtO3v5Xt3b8d1DqYFhK5g&amp;oe=67569649&quot;,&quot;320&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/437718725_1466632947589704_374957246167937509_n.heic?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=eOVyyc4YYl0Q7kNvgG66cws&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDBjm3vEbqp3VwdMFCC2-Yt7MtO3v5Xt3b8d1DqYFhK5g&amp;oe=67569649&quot;,&quot;640&quot;:&quot;https:\\\/\\\/scontent.cdninstagram.com\\\/v\\\/t51.29350-15\\\/437718725_1466632947589704_374957246167937509_n.heic?stp=dst-jpg&amp;_nc_cat=107&amp;ccb=1-7&amp;_nc_sid=18de74&amp;_nc_ohc=eOVyyc4YYl0Q7kNvgG66cws&amp;_nc_zt=23&amp;_nc_ht=scontent.cdninstagram.com&amp;edm=ANo9K5cEAAAA&amp;_nc_gid=A3iy5JASgSs793lsVWXIFgb&amp;oh=00_AYDBjm3vEbqp3VwdMFCC2-Yt7MtO3v5Xt3b8d1DqYFhK5g&amp;oe=67569649&quot;}\">\r\n            <span class=\"sbi-screenreader\">There are different types of noise distribution th<\/span>\r\n            <svg class=\"svg-inline--fa fa-clone fa-w-16 sbi_lightbox_carousel_icon\" aria-hidden=\"true\" aria-label=\"Clone\" data-fa-pro\u0192cessed=\"\" data-prefix=\"far\" data-icon=\"clone\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\">\n\t                <path fill=\"currentColor\" d=\"M464 0H144c-26.51 0-48 21.49-48 48v48H48c-26.51 0-48 21.49-48 48v320c0 26.51 21.49 48 48 48h320c26.51 0 48-21.49 48-48v-48h48c26.51 0 48-21.49 48-48V48c0-26.51-21.49-48-48-48zM362 464H54a6 6 0 0 1-6-6V150a6 6 0 0 1 6-6h42v224c0 26.51 21.49 48 48 48h224v42a6 6 0 0 1-6 6zm96-96H150a6 6 0 0 1-6-6V54a6 6 0 0 1 6-6h308a6 6 0 0 1 6 6v308a6 6 0 0 1-6 6z\"><\/path>\n\t            <\/svg>\t                    <img src=\"https:\/\/www.spelex-i.com\/electronics-expert\/wp-content\/plugins\/instagram-feed\/img\/placeholder.png\" alt=\"There are different types of noise distribution that can be statistically measured with the help of an oscilloscope. A few of them, the most popular, are shown in the picture.\n\nThis information can help to find a source of the problem during EMC\/EMI debugging in a very low noise system. \n\nThe picture was taken from one of Teledyne webinars.\n\n.\n.\n.\n#spelex #electronicmeasurement \n#lownoisedesign #emc #emv #noise #emi\n#signalintegrity #powerintegrity\n#analogelectronics #digitalelectronics\n#rfdesign #highspeedcircuit #teledyne #oscilloscope\">\r\n        <\/a>\r\n    <\/div>\r\n<\/div>    <\/div>\r\n\r\n\t<div id=\"sbi_load\" >\r\n\r\n\t\t\t<a class=\"sbi_load_btn\" href=\"javascript:void(0);\" style=\"background: rgb(255,0,0);color: rgb(255,255,255);\">\r\n\t\t\t<span class=\"sbi_btn_text\">Load More...<\/span>\r\n\t\t\t<span class=\"sbi_loader sbi_hidden\" style=\"background-color: rgb(255, 255, 255);\" aria-hidden=\"true\"><\/span>\r\n\t\t<\/a>\r\n\t\r\n\t\r\n<\/div>\r\n\r\n\t    <span class=\"sbi_resized_image_data\" data-feed-id=\"sbi_17841419884156099rdm#60\" 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Design\/Support RF Front-End of Digital Communication System (Software-Defined Radio) The RF Front-End is a bridge between an analog RF signal and a FPGA for any wireless communication&nbsp;devices and measurement tools. The module performs analog signal processing in both RX\/TX directions. The receiver has a one channel and the transmitter can generate I\/Q channels. The [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"template-fullwidth.php","meta":{"pgc_meta":""},"pgc_meta":"","_links":{"self":[{"href":"https:\/\/www.spelex-i.com\/electronics-expert\/wp-json\/wp\/v2\/pages\/777"}],"collection":[{"href":"https:\/\/www.spelex-i.com\/electronics-expert\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.spelex-i.com\/electronics-expert\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.spelex-i.com\/electronics-expert\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.spelex-i.com\/electronics-expert\/wp-json\/wp\/v2\/comments?post=777"}],"version-history":[{"count":9,"href":"https:\/\/www.spelex-i.com\/electronics-expert\/wp-json\/wp\/v2\/pages\/777\/revisions"}],"predecessor-version":[{"id":2249,"href":"https:\/\/www.spelex-i.com\/electronics-expert\/wp-json\/wp\/v2\/pages\/777\/revisions\/2249"}],"wp:attachment":[{"href":"https:\/\/www.spelex-i.com\/electronics-expert\/wp-json\/wp\/v2\/media?parent=777"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}