Microwave News: 5G Waveforms in Dispute
From Louis Slesin, editor of Microwave News
September 25, 2020
Ken Foster & Niels Kuster Disagree on Averaging Times
Excerpt:
Very little has been written in the popular media about the waveforms used in 5G signals. Two outstanding questions are: How fast are the pulses? How powerful are they?
In 2018, Esra Neufeld and Niels Kuster of the IT”™IS Foundation in Zurich issued a warning in a paper in Health Physics, urging that existing exposure standards be revised with shorter averaging times to address potential thermal damage from short and strong pulses:
“Extreme broadband wireless devices operating above 10 GHz may transmit data in bursts of a few milliseconds to seconds. Even though the time- and area-averaged power density values remain within the acceptable safety limits for continuous exposure, these bursts may lead to short temperature spikes in the skin of exposed people. … [Our] results also show that the peak-to-average ratio of 1,000 tolerated by the ICNIRP guidelines may lead to permanent tissue damage after even short exposures, highlighting the importance of revisiting existing exposure guidelines.”¯
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