System and method for selective transfer of radio frequency power

  • US 7,521,890 B2
  • Filed: 12/27/2005
  • Issued: 04/21/2009
  • Est. Priority Date: 12/27/2005
  • Status: Active Grant
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First Claim
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1. A system comprising:

  • a first unit with a substantially flat top surface, operatively connectable to a RF power source having at least a first frequency, and including an array of local resonance circuits having a resonance frequency selected to present a large load impedance to the RF power source; and

    a secondary unit, including a resonance circuit having an adaptive self impedance such that when the secondary unit couples to a local resonance circuit, the local resonance circuit presents a lower load impedance to the RF power source allowing radio frequency power to flow from the first unit to the secondary unit.

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