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Apparatus and method for wireless power transmission

  • US 9,431,830 B2
  • Filed: 05/03/2012
  • Issued: 08/30/2016
  • Est. Priority Date: 05/12/2011
  • Status: Expired due to Fees
First Claim
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1. A wireless power transmitter comprising:

  • a source resonator configured to wirelessly transmit power to a target device;

    at least one sub-resonator positioned inside of the source resonator; and

    a controller configured to determine a direction of current flowing in the at least one sub-resonator based on a radio between a resonance frequency of the source resonator and a resonance frequency of the at least one sub-resonator,wherein a distribution of a magnetic field is controlled based on the direction.

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