IMPEDANCE CHANGE DETECTION IN WIRELESS POWER TRANSMISSION

  • US 20100217553A1
  • Filed: 12/17/2009
  • Published: 08/26/2010
  • Est. Priority Date: 01/22/2009
  • Status: Active Grant
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First Claim
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1. A method for detecting reverse-link signaling, comprising:

  • directionally coupling a forward link signal to a reverse link signal responsive to the forward link signal, wherein the forward link signal comprises an operable coupling of an RF signal input to a transmit signal output;

    measuring an impedance difference between the forward link signal and the reverse link signal; and

    determining digital signaling values responsive to changes in the impedance difference.

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