Antenna tile arrangements in electronic device enclosures

  • US 9,859,757 B1
  • Filed: 12/29/2014
  • Issued: 01/02/2018
  • Est. Priority Date: 07/25/2013
  • Status: Active Grant
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First Claim
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1. A system for wireless power transmission, the system comprising:

  • an enclosure of an electronic device; and

    a plurality of transmit tiles positioned along the enclosure, each of the transmit tiles comprising;

    an antenna;

    a radio frequency integrated circuit (RFIC) coupled to the antenna and configured to engage the antenna such that the antenna emits a plurality of wireless power waves forming constructive and destructive interference patterns defining a pocket of energy; and

    a controller that is coupled with the plurality of transmit tiles, the controller configured to;

    receive (i) first information used to determine a first location of a first receiving electronic device and (ii) second information used to determine a second location of a second receiving electronic device;

    based on the first location of the first receiving electronic device, select one or more first transmit tiles of the plurality of transmit tiles to use for transmitting wireless power waves to the first receiving electronic device;

    based on the second location of the second receiving electronic device, select one or more second transmit tiles of the plurality of transmit tiles, distinct from the one or more first transmit tiles, to use for transmitting wireless power waves to the second receiving electronic device;

    instruct respective RFICs coupled to respective antennas of the one or more first and second transmit tiles to cause the respective antennas to transmit respective pluralities of wireless power waves that constructively interfere near the first and second locations, respectively, of the first and second receiving electronic devices,wherein the one or more first transmit tiles transmit using a first frequency, and the one or more second transmit tiles transmit using a second frequency, distinct and non-overlapping relative to the first frequency; and

    receive control signals from the first and second receiving electronic devices that are used to determine adjustments to transmission of the respective pluralities of wireless power waves.

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