(Re)Discovering the Lost Science of Near-Field Measurements, Part 3

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, this series of installments argues that we started off correctly seventy years ago, but then took the wrong fork in the road in 1967.

Journey to the Center of the Dipole

The electrical engineering sub-discipline of electromagnetic compatibility has been described as the study of second-order effects that were ignored in college. Investigating electromagnetic fields next to a dipole is one such topic. Don’t cite Hertz and his dipole – he didn’t go there.