radiated immunity

Choosing the Right Antenna for Compliance Testing: A Practical Guide

Choosing the right antenna can make or break your compliance testing results. This practical guide walks engineers through the essentials—frequency range, polarization, gain, and directivity—while decoding which antenna types deliver the most accurate, reliable measurements in real‑world EMC and RF test environments.

Confessions of an Automotive EMC Standards Junkie

Decades of global collaboration have shaped today’s automotive EMC standards. From CISPR 25 and ISO 11452 to UNECE R10, this piece reveals how harmonization, travel, technical debate, and human connection have created the consistent, repeatable EMC frameworks the industry depends on.

Understanding and Dealing with Radiated Immunity, Part 1

Troubleshooting RF immunity failures at your workbench allows you to identify susceptibility issues in hours instead of weeks. These focused techniques pinpoint exact coupling mechanisms, saving thousands in test lab costs while providing more efficient solutions than traditional anechoic chamber testing.

Using Near-Field Probes to Troubleshoot Radiated Immunity Failures

Near‑field probe techniques commonly used for EFT troubleshooting can also uncover radiated immunity failures. Using a real‑world audio device case study, this article shows how a simple benchtop setup exposed PCB‑level resonance, guided a low‑cost fix, and helped resolve chamber test failures.

Will 4% Steps Find Radiated Susceptibilities?

CISPR Publications 24 and 35 allow radiated and conducted immunity tests to be performed using I% or 4% steps. This article looks at measured radiated immunity test data to determine the typical shapes of radiated susceptibilities for multimedia equipment. The authors consider what those shapes tell us about the validity of the 4% step method.
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A Novel Concept for EMC Radiated Immunity Testing Using Field Generators

The pressure to bring new products to the market, with reduced time to market, high quality and reduced cost, has never been greater.

Harmonic Measurement for IEC 61000-4-3 and other Radiated Immunity Standards

In the rush to complete RF immunity testing on schedule, it is not all that unusual to overlook inherent test equipment limitations. While some test equipment characteristics such as power amplifier harmonics are obviously a limiting factor, the broadband characteristics of antennas, directional couplers, power meters and isotropic field probes can hardly be considered a limitation for most applications. However, when used with power amplifiers exhibiting significant harmonic distortion in Immunity test systems, the broadband characteristics of these devices can result in measurement uncertainty and unacceptable errors.

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