Enhanced transmitter using frequency control for wireless power transmission

  • US 9,793,758 B2
  • Filed: 05/23/2014
  • Issued: 10/17/2017
  • Est. Priority Date: 05/23/2014
  • Status: Active Grant
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First Claim
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1. An apparatus for controlling transmission of wireless signals suitable for charging devices, comprising:

  • a controller;

    at least one receiving circuit, operatively coupled to the controller;

    a plurality of transmitting circuits, operatively coupled to the controller;

    a communication component coupled to the controller and configured to communicate with a receiver to identify a location for forming a controlled constructive interference pattern; and

    an antenna array comprising a plurality of antenna elements, wherein a first portion of the plurality of antenna elements are respectively coupled to the at least one receiving circuit and a second portion of the plurality of antenna elements are respectively coupled to the plurality of transmitting circuits;

    wherein;

    the at least one receiving circuit is configured to receive incoming RF signals from the receiver using the first portion of the plurality of antenna elements,the controller is configured to;

    (i) sample and process the incoming RF signals, and(ii) control operation of the plurality of transmitting circuits so as to generate outgoing RF signals having a frequency that is higher than a frequency of the incoming RF signals to form the controlled constructive interference pattern proximate to the location, andthe plurality of transmitting circuits is configured to;

    (i) generate the outgoing RF signals having the frequency that is higher than the frequency of the incoming RF signals and(ii) cause the second portion of the plurality of antenna elements to transmit the outgoing RF signals having the frequency that is higher than the frequency of the incoming RF signals.

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