Integrated antenna structure arrays for wireless power transmission

  • US 10,381,880 B2
  • Filed: 07/21/2014
  • Issued: 08/13/2019
  • Est. Priority Date: 07/21/2014
  • Status: Active Grant
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First Claim
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1. An antenna for transmitting focused radio-frequency (RF) power transmission waves towards a wireless-power-receiving device to provide wireless power thereto, comprising:

  • a plurality of integrated antenna structures, wherein each of the plurality of integrated antenna structures;

    includes;

    a first group of unit cells with a wireless power transmitting element configured to transmit focused RF power transmission waves to the wireless-power-receiving device for powering an electronic device coupled to the wireless-power-receiving device, wherein the first group of unit cells includes a first top layer and a first side layer, anda second group of unit cells without a wireless power transmitting element, wherein the second group of unit cells includes a second top layer and a second side layer,is configured to transmit, via the wireless power transmitting element, focused RF wireless power transmission waves having a wavelength (λ

    ) to the wireless-power-receiving device for powering the electronic device, and at least some of the focused RF power transmission waves are waves reflected by the second group of unit cells towards the wireless-power-receiving device via the second top layer or the second side layer, andis spaced apart from an adjacent integrated antenna structure of the plurality of integrated antenna structures by a predetermined spacing distance of about 1/10 λ

    to about 1/15 λ

    ,wherein the first and second top layers and the first and second side layers are made of an artificial magnetic conductor (AMC) material.

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