Systems and methods of transmitting power transmission waves based on signals received at first and second subsets of a transmitter's antenna array

  • US 9,906,065 B2
  • Filed: 12/27/2014
  • Issued: 02/27/2018
  • Est. Priority Date: 07/06/2012
  • Status: Active Grant
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First Claim
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1. A method of wirelessly transmitting power, the method comprising:

  • at a wireless power transmitter comprising an antenna array;

    receiving, by a first subset of antennas of the antenna array, a first signal from a wireless power receiver;

    receiving, by a second subset of antennas of the antenna array, a second signal from the wireless power receiver, wherein the second subset of antennas includes at least one antenna not included in the first subset of antennas;

    based on an analysis of the first and second signals, determining, by the controller, transmission features for power transmission waves that cause the power transmission waves to constructively interfere around a location of the wireless power receiver when transmitted by the antenna array; and

    after determining the transmission features based on the analysis of the first and second signals, transmitting, by the antenna array, power transmission waves having the determined transmission features, the power transmission waves constructively interfering around the location of the wireless power receiver.

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