Wireless non-radiative energy transfer

  • US 7,741,734 B2
  • Filed: 07/05/2006
  • Issued: 06/22/2010
  • Est. Priority Date: 07/12/2005
  • Status: Active Grant
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First Claim
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1. A method of transferring electromagnetic energy comprising:

  • providing a first electromagnetic resonator structure receiving energy from an external power supply, said first resonator structure having a first mode with a resonant frequency ω

    1, an intrinsic loss rate Γ

    1, and a first Q-factor Q1

    1/(2Γ

    1),providing a second electromagnetic resonator structure being positioned distal from said first resonator structure and not electrically wired to the first resonator structure, said second resonator structure having a second mode with a resonant frequency ω

    2, an intrinsic loss rate Γ

    2, and a second Q-factor Q2

    2/(2Γ

    2),transferring electromagnetic energy from said first resonator structure to said second resonator structure over a distance D that is smaller than each of the resonant wavelengths λ

    1 and λ

    2 corresponding to the resonant frequencies ω

    1 and ω

    2, respectively,wherein the electromagnetic resonator structures are designed to have Q1>

    100 and Q2>

    100.

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