William Koerner

William Koerner is a Senior Application Engineer with Keysight Technologies, where he focuses on supporting the company’s microwave compliance testing solutions, including wireless regulatory (Wi-Fi, Bluetooth®, Zigbee), EMI receivers, and co-existence testing for medical devices. Koerner is also Keysight’s representative to the FCC’s Telecommunications Certification Body (TCB), the ETSI Broadband Radio Access Networks (BRAN) working committee, and the Wi-Fi Alliance TAG working group.

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Testing

The Evolution of EMI Receivers

Since the discovery of electromagnetic interference (EMI) in the early 1900s, the need for testing for radiated emissions continues to grow as products get more complicated. The time to test has also grown, and, in some cases, can take days to complete. The introduction of fast Fourier transform (FFT) technology into EMI receivers can greatly decrease the required testing time, but is it applicable for everyone?

Standards and Compliance

Understanding the New Capabilities and Regulatory Compliance Testing Requirements for Wi‑Fi 6E & 7

Each new version of Wi-Fi standards offers more capabilities but also more complicated regulatory testing requirements. Deciding which capabilities to include and planning for pre-compliance testing can save multiple trips to the test labs and reduce time to market.

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William Koerner

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What's New

Transfer Impedance vs. Shielding Effectiveness

FCC Seeks to Expand Spectrum Available for Satellite Services

FCC Works to Expand Oversight of Foreign Licensees

Basics of Grounding and Bonding for EMC Compliance

FDA Expands Unannounced Inspections of Foreign Manufacturing Facilities