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REVERSE LINK SIGNALING VIA RECEIVE ANTENNA IMPEDANCE MODULATION

  • US 20150171636A1
  • Filed: 02/23/2015
  • Published: 06/18/2015
  • Est. Priority Date: 05/13/2008
  • Status: Active Grant
First Claim
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1. A wireless power transmitter, comprising:

  • a transmit antenna configured to generate a magnetic field for coupling charging power in a near-field of the magnetic field to a receive antenna to charge a load of a receiver device electrically coupled to the receive antenna;

    an amplifier configured to receive a power signal from a power supply, the amplifier configured to apply a first signal to the transmit antenna; and

    a load sensing circuit operably coupled to the amplifier and configured to detect a change in the power signal supplied to the amplifier,wherein the load sensing circuit is configured to generate a receive signal responsive to the change in the power signal, andwherein the receive signal is indicative of a data communication from the receiver device communicated via the magnetic field.

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