emc testing

It’s imperative for successful completion of a testing project that as a compliance engineer or technician leading a product certification effort, you trust but verify the work of testing facilities.

Part II of this two-article series focuses on log-periodic and biconical antenna impedance, VSWR, and radiated emissions measurements.

This two-article series is devoted to a dipole family of antennas used in EMC testing: half-wave dipole, quarter-wave monopole, log-periodic, and biconical antenna.

This article presents the importance of defining product case and load simulator grounding in an automotive EMC test plan.

Changes to the FCC compliance rules in the U.S. now enable manufacturers to save time and cost by allowing self-testing. This article outlines some of the basic factors that determine RF and EMC behavior and how these determine compliance test methods.

From open fields to shielded enclosures, radiated emissions testing demands precision at every step — this technical deep dive compares OATS and ALSE measurement methods, antenna configurations, and FCC and CISPR compliance limits across a broad frequency spectrum.

The article discusses the behavior of voltage and current waves on a transmission line with different types of loads and explains how to measure the VSWR of an antenna.

Current conducted‑emissions measurement practices under DO‑160 and CISPR 25 rely on shielded‑enclosure testing, LISNs, and current probes to evaluate RF noise on power lines. This overview walks through setups, limits, and real measurement results for both aerospace and automotive environments.

Current probes are transformers that translate magnetic fields into measurable voltages. This comprehensive guide explains the physics behind current probe measurements, from Faraday's law to transfer impedance calculations, with real EMC test results in all three detection modes.

A single lightning strike triggered a chain of signaling failures that sent two high speed trains hurtling toward each other in Wenzhou, China, killing 40 people. This Reality Engineering feature examines how EMI from a thunderstorm exposed critical gaps in fail safe rail safety systems.