Author Warns of Wireless Power Transmission Interference

Battery charging systems based on wireless power transmission (WPT) technology hold tremendous promise in the deployment of electric vehicles around the world. But at least one technical expert has raised concerns regarding the potential of WPT systems to interfere with radio communications, including amateur radio operations.

According to a news release posted to the ARRL website, a technical paper drafted by Don Beattie, president of International Amateur Radio Union Region 1 (IARU-R1) warns of “a widespread and serious impact on radio communications operating in the vicinity” of WPT systems, even when those systems operate within current recommended emissions limits issued by the International Telecommunications Union (ITU) and the European Conference of Postal and Telecommunications Administrators (CEPT).

Beattie’s paper WPT impact analysis also touches on potential concerns from non-EV WPT systems, such as those intended for use with consumer electronics such as cellphones, power tools and household appliances.

In January, the CEPT issued a detailed report on “Wireless Power Transmission (WPT) systems for electrical vehicles (EVs) operating within the 79-90 kHz band.” However, according to Beattie, that report stops short of recommending appropriate regulatory action to help ensure adequate protection of systems and equipment co-located near WPT systems.

Read Beattie’s draft paper on wireless power transmission impact analysis.

Read the ARRL news release on Don Beattie’s draft paper.

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