IARU Watching Wireless Charging Technology

The International Amateur Radio Union (IARU) continues to consider the issue of Wireless Power Transfer (WPT) as it prepares for the ITU World Radiocommunications Conference in 2019 (WRC-19). Agenda item 9.1.6 is about Wireless Power Transmission (WPT) for electric vehicles. It will consider the effect this will have on radiocommunication services, and through harmonised frequency ranges seeks to minimise any impact on existing services.

WPT is promoted as being able to recharge the batteries of electric vehicles that are stationary, or in motion, without a direct electrical connection. Energy is transferred using a wireless link. WPT systems are likely to use high power levels, so they have the possibility of causing harmful interference to radiocommunication.

Work has been under way at the ITU for some time and a report on it is available. Just Google ITU report SM.2392-0 "Applications of wireless power transmission via radio frequency beam". This report provides a lot of information on WPT systems and it is currently being revised to include material directly relevant to WRC-19.

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