Antenna having coaxial structure for near field wireless power charging

  • US 10,256,657 B2
  • Filed: 02/17/2016
  • Issued: 04/09/2019
  • Est. Priority Date: 12/24/2015
  • Status: Active Grant
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First Claim
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1. A wireless charging system comprising:

  • a transmitter coaxial structure comprising a first housing, a first substrate disposed in the first housing, and a first metallic core disposed in an opening defined by the first substrate, anda receiver coaxial structure comprising a second housing, a second substrate disposed in the second housing, and a second metallic core disposed in an opening defined by the second substrate, wherein;

    the transmitter coaxial structure is configured to carry one or more radio frequency (RF) signals through the first substrate to the first metallic core when the receiver coaxial structure is within a threshold distance from the transmitter coaxial structure;

    the receiver coaxial structure is configured to;

    be excited by the one or more RF signals from the transmitter coaxial structure, the one or more RF signals being transferred from the first metallic core to the second metallic core when the transmitter coaxial structure and the receiver coaxial structure are within the threshold distance from each other; and

    convert the received one or more RF signals into usable energy to power and/or charge an electronic device coupled to the receiver coaxial structure.

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