Systems and methods for wireless power transmission by comparing voltage levels associated with power waves transmitted by antennas of a plurality of antennas of a transmitter to determine appropriate phase adjustments for the power waves

  • US 9,887,739 B2
  • Filed: 12/29/2014
  • Issued: 02/06/2018
  • Est. Priority Date: 07/06/2012
  • Status: Active Grant
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First Claim
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1. A method for wireless power transmission, the method comprising:

  • receiving, by communications component of a transmitter, a first communication signal from a receiver, the first communication signal indicating a location associated with the receiver,wherein the transmitter comprises a plurality of antennas configured to transmit one or more power waves while the communication component of the transmitter receives one or more communications signals;

    transmitting, by the transmitter, a first power wave at a first phase from a first antenna of a plurality of antennas to a location of the receiver;

    receiving, by the communications component of the transmitter from the receiver, voltage level data indicating a first voltage level associated with the first power wave;

    transmitting, by the transmitter, a second power wave at a second phase from a second antenna of the plurality of antennas to the location of the receiver;

    receiving, by the communications component of the transmitter from the receiver, voltage level data indicating a second voltage level associated with the second power wave;

    upon determining that the first voltage level associated with the first power wave was greater than the second voltage level associated with the second power wave, continue transmitting, by the transmitter, power waves at the first phase from the first antenna to the location of the receiver and adjusting the second phase of the second power wave until the second voltage level associated with the second power wave reaches at least a previously stored value for the first voltage level associated with the first power wave; and

    upon determining that the second voltage level associated with the second power wave was greater than the first voltage level associated with the first power wave;

    continue transmitting, by the transmitter, power waves at the second phase from the second antenna to the location of the receiver and adjusting the first phase of the first power wave until the first voltage level associated with the first power wave reaches at least a previously stored value for the second voltage level associated with the second power wave,wherein the transmitter is configured to determine each voltage level using at least one communications signal received while transmitting at least one power wave.

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