Wireless energy transfer over distance using field shaping to improve the coupling factor

  • US 8,471,410 B2
  • Filed: 12/30/2009
  • Issued: 06/25/2013
  • Est. Priority Date: 09/27/2008
  • Status: Active Grant
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First Claim
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1. A system, comprising:

  • a first resonator optionally coupled to an energy source; and

    a second resonator located a variable distance from the source resonator and not connected by any wires to the first resonator,wherein the first resonator and the second resonator are coupled to provide near-field wireless energy transfer among the first resonator and the second resonator;

    wherein the field of at least one of the first resonator and the second resonator is shaped to increase the coupling factor among the resonators.

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