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Living-object protection system antenna structure

  • US 10,224,762 B2
  • Filed: 07/28/2017
  • Issued: 03/05/2019
  • Est. Priority Date: 07/28/2017
  • Status: Active Grant
First Claim
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1. A base wireless power transfer system comprising:

  • a power-coupling element;

    power transfer circuitry communicatively coupled to the power-coupling element and configured to provide energy to the power-coupling element to produce a magnetic field; and

    a living-object protection subsystem comprising;

    an antenna configured to transmit a first radio-frequency (RF) signal with a main beam directed away from the power transfer circuitry and to receive a second RF signal, the antenna comprising a radiating element and a reflector with the reflector being disposed between the radiating element and the power transfer circuitry and comprising a metal sheet disposed over an area, the metal sheet defining at least one opening within the area and between the radiating element and the power transfer circuitry; and

    a processor communicatively coupled to the antenna and configured to analyze the second RF signal received by the antenna to determine whether an object is present in a region of interest proximate to the base wireless power transfer system.

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