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Power transmitting unit with adjustable field and methods for use therewith

  • US 10,056,786 B2
  • Filed: 12/18/2015
  • Issued: 08/21/2018
  • Est. Priority Date: 11/11/2015
  • Status: Active Grant
First Claim
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1. A power transmitting device comprising:

  • a wireless power generator configured to generate a wireless power signal;

    a transmit resonator configured to transmit the wireless power signal via a transmit magnetic field to a power receiving unit, the transmit resonator including;

    a transmit coil configured to generate that transmit magnetic field in response to the wireless power signal; and

    at least one variable magnetic element configured to adjust at least one property of the transmit coil by varying a reluctance of the at least one variable magnetic element in response to at least one control signal; and

    a processing device configured to generate the at least one control signal to select the reluctance corresponding to the at least one property of the transmit coil.

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