ESC Silicon Valley

The EMC Blog

- January 31, 2014

Kenneth Wyatt is an independent consultant and specialist in electromagnetic compatibility (EMC) design, test and troubleshooting. In The EMC Blog, he discusses issues, trends, EMC design, and product troubleshooting techniques. One specialty is his use of do-it-yourself probes and use of low-cost test equipment and measurement techniques for evaluating EMI issues on the workbench. He's also the coauthor of The EMC Pocket Guide and coauthor for EMI Troubleshooting Cookbook for Product Designers, both published by SciTech Publishing and available on Amazon.

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Beware of hidden antennas!

  • 06.23.2015

There are many causes of radiated emissions and the product designer needs to be able to identify the “hidden antennas” that cause this.Read More...

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Review: The AET USDS spherical harmonic comb generator

  • 06.16.2015

Having been a long-time user of harmonic comb generators, I’ve always admired the concept of Applied Electromagnetic Technology’s spherical harmonic comb generator design. I finally was able to get my hands on one to try out.Read More...

Advanced radiated emissions troubleshooting setups with the Rigol DSA815

  • 05.05.2015

Many product designers and EMI engineers are using the popular Rigol DSA815 spectrum analyzer for EMI troubleshooting and pre-compliance testing. I’d like to demonstrate the instrument settings and measurement features I most commonly use when troubleshooting radiated emissions in the 30 to 1000 MHz region. You’ll find these useful for either near field probing or testing emissions using a nearby EMI antenna. Read More...

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Review: The Red Oak Canyon “RF Pro Touch” RF generator

  • 04.26.2015

This small portable RF generator with very accurate RF output levels incorporates Robert Yarbrough’s model TPI Synthesizer version 4, repackaged with touchscreen control and chargeable battery. Read More...

Review: The Vectawave VBM2500-3 RF amplifier

  • 04.20.2015

Recently, several of my clients have been requesting help with pre-compliance testing in the 10 to 50 V/m range, well beyond what the simple TPI or Windfreak RF synthesizers alone can muster. So, I’ve been continuing to look for small low-cost RF power amplifiers that can help me achieve these higher power levels.Read More...

EMC questions answered (part 7)

  • 04.14.2015

Several great questions on troubleshooting radiated emissions were asked during my recent webinar, Troubleshooting Radiated Emissions, hosted by UBM and sponsored by Rohde & Schwarz last April 2015. Unfortunately, we ran out of time to answer them all, so here they are with answers. Read More...

EMC Symposium 2015 (Santa Clara)

  • 03.23.2015

The IEEE International Symposium on EMC was held early this year, due to the international symposium on EMC in Dresden, Germany, this year. As always, the week's program was full with multiple simultaneous tracks. I'll summarize some of the high points.Read More...

Review: The Extech 480836 E-field meter

  • 03.22.2015

Needing an E-field meter and wondering how the more inexpensive ones compare to those costing thousands of dollars more, I purchased the Extech model 480836 handheld meter at $279 to characterize the accuracy. We’ll be comparing it to two other ETS-Lindgren (calibrated) meters.Read More...

How cops are finding "grow ops" with AM radios

  • 03.10.2015

With the help of radio frequency interference, police have stared to use AM radios in their vehicles to locate illegal indoor marijuana farms.Read More...

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Wi-Fi network interference, analysis, and optimization

  • 02.15.2015

One aspect related to EMC today is that, with the proliferation of embedded wireless systems in all imaginable products, comes the risk of increasing interference and resulting slowdown in data transfer. We'll discuss how wireless networks work, the typical interfering sources and how best to manage your system.Read More...

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