Wireless power receiver for mobile devices supporting inductive and resonant operating modes

Anand Satyamoorthy,Patrick Stanley Riehl,Hasnain Akram,Yungchih Yen,J C Yang,Brian Juan,Chimin Lee,Fuchi Lin

Wireless Power Transfer Conference（2014）

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摘要

We demonstrate a compact wireless power receiver for mobile phones that operates either in a resonant mode at 6.78 MHz or an inductive mode in the 110 to 205 kHz range. A coil arrangement and matching network is introduced that is resonant in both frequency bands, allowing the same power conversion circuitry to operate in either mode. The receiver converts up to 5 W of AC power to a regulated 5 V supply with a peak efficiency of 84% in inductive mode and 82% in resonant mode.

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关键词

battery chargers,inductive power transmission,microwave receivers,mobile radio,telecommunication power supplies,coil arrangement,compact wireless power receiver,frequency 110 khz to 205 khz,frequency 6.78 mhz,frequency bands,inductive operating modes,matching network,mobile devices,mobile phones,power conversion circuitry,resonant operating modes,voltage 5 v,wireless charging,wireless power,temperature measurement,wireless communication,transmitters

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