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Systems and methods for bi-state impedance conversion in wireless power transfer

  • US 9,302,591 B2
  • Filed: 09/13/2013
  • Issued: 04/05/2016
  • Est. Priority Date: 09/13/2013
  • Status: Active Grant
First Claim
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1. A wireless power transmitter comprising:

  • a transmit antenna configured to generate a field for wireless transmit power in both a first and second configuration;

    a first capacitor;

    at least one switch configured to selectively connect the first capacitor in one of the first and second configuration, the first capacitor being in series with the transmit antenna in the first configuration and in parallel with the transmit antenna in the second configuration; and

    a second capacitor in parallel with the transmit antenna, wherein the first capacitor is in parallel with the second capacitor in the first configuration and in series with the second capacitor in the second configuration.

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