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Increasing efficiency of wireless power transfer

  • US 8,427,100 B2
  • Filed: 10/16/2009
  • Issued: 04/23/2013
  • Est. Priority Date: 02/06/2009
  • Status: Active Grant
First Claim
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1. A method comprising:

  • initiating a wireless power transfer from a charging station to a portable electronic device via a wireless power link;

    receiving at least one parameter regarding the portable electronic device at the charging station via a wireless communication link in response to initiation of the wireless power transfer, the at least one parameter including a frequency parameter that specifies a resonant frequency of the portable electronic device; and

    increasing efficiency of the wireless power transfer based on the at least one parameter, wherein increasing the efficiency of the wireless power transfer includes changing a frequency at which a non-radiative magnetic field, which mediates the wireless power transfer, oscillates to be substantially equal to the resonant frequency of the portable electronic device.

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