• US 20100289449A1
  • Filed: 12/18/2008
  • Published: 11/18/2010
  • Est. Priority Date: 12/19/2007
  • Status: Active Grant
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First Claim
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1. An apparatus comprising:

  • monitoring circuitry configured to monitor a resonant frequency of a supply source;

    a receiving component; and

    a control unit configured to vary a resonant frequency of said receiving component, wherein the apparatus is configured to vary the resonant frequency of said receiving component in dependence upon a signal from said monitoring circuitry.

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