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Miniaturized highly efficient wireless power transfer elements using multiple layers of resonators and/or tunable capacitors

  • US 9,985,460 B2
  • Filed: 07/17/2015
  • Issued: 05/29/2018
  • Est. Priority Date: 07/17/2015
  • Status: Active Grant
First Claim
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1. A wireless power transfer (WPT) system, comprising:

  • a transmitter (TX) element; and

    a receiver (RX) element,the TX element comprising;

    a TX lumped capacitor;

    a source loop on a first surface of a TX substrate;

    a first TX resonator disposed on the first surface of the TX substrate; and

    a second TX resonator, the second TX resonator being disposed either on a second surface of the TX substrate opposite to the first surface of the TX substrate or within the TX substrate as a layer between the first and second surfaces of the TX substrate, and the second TX resonator and the first TX resonator being physically disconnected from the source loop and from each other, andthe RX element comprising;

    a RX lumped capacitor;

    a first RX resonator disposed on a first surface of a RX substrate; and

    a second RX resonator, wherein the second RX resonator is disposed either on a second surface of the RX substrate opposite to the first surface of the RX substrate or within the RX substrate as a layer between the first and second surfaces of the RX substrate.

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