MULTIMODE WIRELESS POWER TRANSMITTERS AND RELATED METHODS
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United States of America Patent
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app pub date -
Jan 13, 2017
filing date -
Aug 2, 2013
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Abstract
A wireless power transmitter comprises a bridge inverter configured to receive a DC power signal and generate an AC power signal according to an operating frequency, a resonant tank configured to receive the AC power signal and generate an electromagnetic field responsive thereto, and control logic configured to cause the resonant tank to reconfigure and adjust its resonant frequency for a particular receiver type of a wireless power receiver with which a mutual inductance relationship is desired. A method comprises determining a receiver type for a wireless power receiver with which it is desired to establish a mutual inductance relationship for wireless power transfer, and generating a wireless power signal with a wireless power transmitter having an operating frequency and resonant tank that is adjusted for a particular receiver type.
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