July 2023

In This Issue

The July 2023 issue of In Compliance concentrates on Electromagnetic Compatibility.

In-Situ Radiated Emission Testing of Large Systems Installations
By Dr. Min Zhang
When it comes to in-situ radiated emission measurements, the combination of near and far field measurements is often the best approach. Near-field measurements can help identify the sources of emissions, including individual modules or components and their frequency and amplitude characteristics. This information can then be used for far-field measurements. Far-field measurements involve using antennas to measure the radiated noise, with full‑size antennas recommended for measurements between 30 and 200 MHz.

ANSC C63 Committee on EMC: A 2023 Status Report
By Daniel D. Hoolihan
This article is intended to cover recent operations of the ANSC C63 Committee, including an announcement of a Chairmanship change and detailed descriptions of the most recently released C63 Standards.

(Re)Discovering the Lost Science of Near-Field Measurements, Part 1
By Ken Javor
This article is the third in a series commemorating 70 years since the advent of modern EMI testing. But this last article is itself divided into multiple parts, due to the topic’s complexity. Unlike the previous two articles, which mainly tracked evolution and explained issues, these next installments argue that we started off correctly seventy years ago, but then took the wrong fork in the road in 1967.

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