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Apparatus and method for data communication using wireless power

  • US 9,160,417 B2
  • Filed: 05/29/2012
  • Issued: 10/13/2015
  • Est. Priority Date: 05/31/2011
  • Status: Expired due to Fees
First Claim
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1. A data communication apparatus using wireless power, the apparatus comprising:

  • a power signal detecting unit configured to detect a signal corresponding to a change in an impedance of a target device;

    a demodulating unit configured to demodulate a message, which is modulated by the target device onto a carrier wave transmitted by the apparatus, using the detected signal, wherein the demodulating unit comprisesa phase mixing unit configured to generate a first mixed signal by mixing a first signal corresponding to the detected signal and a signal that is in chase with the carrier wave, anda comparing unit configured to co are the first mixed signal and a reference signal; and

    a source resonator configured to transmit the carrier wave wirelessly to the target device,wherein the demodulating unit mixes the detected signal and the signal that is in phase with the carrier wave.

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