Wireless Power Transmission

Abstract

The power transmitter 101 wirelessly supplies power to the power receiver 105 via a power transmission signal generated by a power transmission coil. A communication driver 209 generates a communication drive signal for the communication coil to generate a communication carrier signal. A communication unit 205 communicates with the power receiver using modulation of the communication carrier signal and receives a configuration message. The configuration message includes a response timing characteristic indicator that indicates a response timing characteristic of the power supply signal resulting from power extracted from the communication carrier signal by the power receiver. A level controller controls the amplitude of the communication carrier signal. An adapter adapts a control parameter of the level controller depending on the response timing characteristic indicator.

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