Near-field antennas for accumulating energy at a near-field distance with minimal far-field gain

  • US 10,511,097 B2
  • Filed: 05/08/2018
  • Issued: 12/17/2019
  • Est. Priority Date: 05/12/2017
  • Status: Active Grant
  • ×
    • Pin Icon | RPX Insight
    • Pin
First Claim
Patent Images

1. A near-field antenna for transmitting radio frequency (RF) power transmission signals, comprising:

  • a conductive plate having opposing first and second planar surfaces and one or more cutouts extending through the conductive place from the first surface to the second surface;

    an insulator; and

    a feed element, separated from the first surface of the conductive plate by the insulator, configured to direct a plurality of RF power transmission signals towards the conductive plate,wherein;

    at least some of the RF power transmission signals of the plurality of RF power transmission signals radiate through the one or more cutouts and accumulate within a near-field distance of the conductive plate to create at least two distinct zones of accumulated RF energy at each of the one or more cutouts; and

    the at least two distinct zones of accumulated RF energy at each of the one or more cutouts are defined based, at least in part, on;

    (i) a set of dimensions defining each of the one or more cutouts, and (ii) an arrangement of the one or more cutouts.

View all claims