rf signals

Audio Rectification and TDMA/GSM EMI

Audio rectification is a common EMI problem in which high-frequency RF signals interfere with low-frequency audio circuits, producing audible noise or distortion. This article explains the causes of audio rectification, demonstrates TDMA/GSM effects on speakers, and offers practical EMI mitigation techniques for designers.

Wi-Fi Backscatter Communication System Developed at University of Washington

Engineers at the University of Washington developed a communication system that uses RF signals to power battery-free wireless devices through existing Wi-Fi infrastructures. This new system could propel the future of Internet of Things.

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