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Coupled resonator in a metal back cover

  • US 10,361,588 B2
  • Filed: 05/06/2016
  • Issued: 07/23/2019
  • Est. Priority Date: 12/07/2015
  • Status: Active Grant
First Claim
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1. An electronic device comprising:

  • electronic components;

    a metal case configured to house the electronic components; and

    a power receiving element comprising a coil defining an area, the coil disposed on an inner portion of the metal case without openings within the area that permit the power receiving element to couple with an externally generated magnetic field and located adjacent to at least one edge of the metal case and configured to couple with a magnetic field that emanates from the at least one edge of the metal case when the metal case is exposed to the externally generated magnetic field, to wirelessly receive power from the externally generated magnetic field.

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