conducted emissions

MIL-STD-461H dropped in April 2026 with no new requirements and no new test equipment — so what changed? Ken Javor breaks down every substantive update, and why most of them exist to stop EMC lawyers from gaming the standard.

Spectrum analyzers are the go-to tool for diagnosing conducted and radiated emissions — but knowing how to configure them makes all the difference. Kenneth Wyatt walks through key settings, trace strategies, and practical tips for getting reliable results on the bench.

Via placement and trace geometry significantly affect decoupling capacitor performance. This final installment of a three-part series presents conducted emissions measurements across six PCB via topologies, revealing how distance from the power-ground plane pair and via spacing impact EMC results.

Conducted emissions testing on custom PCBs shows how moving a decoupling capacitor farther from an IC can increase emissions across multiple frequency bands. Using CISPR 25 methods, this study compares capacitor placements and via topologies to reveal how distance and inductance shape PDN behavior.

When your circuit misbehaves with unexplained noise and jitter, you're facing electromagnetic coupling. This practical guide walks engineers through identifying whether problems stem from differential or common mode issues, near-field or far-field effects, and provides a systematic debugging workflow to isolate sources, paths, and receivers—getting your design back on track.

Full-wave EMC simulation tools are powerful — but often too slow, too costly, and too complex for real-world troubleshooting. Dr. Min Zhang makes the case for free SPICE-based tools, walking through three field scenarios where quick models helped isolate failures, validate test setups, and guide next-generation designs.

This series of articles delves into the design principles of power filters for switched-mode power converters and similar applications, focusing on conducted and radiated emissions. Part 2 will examine specific aspects of switched power converters.

Learn how to perform in-house conducted emissions testing for DC-powered devices like automotive and medical equipment, using simple test setups and filters to reduce electromagnetic noise across various frequency ranges.

Conventional wisdom attributes conducted EMI emissions solely to power connections, but interface-sourced common-mode potentials often masquerade as power terminal issues. Discover how to properly identify and address the true origins of your EMI challenges.

Learn to set up in-house conducted emissions testing for line-operated products using basic equipment like spectrum analyzers and LISNs. This practical guide helps engineers perform pre-compliance EMC testing right on their benchtop, potentially saving time and money.