WIRELESS ENERGY TRANSFER ACROSS VARIABLE DISTANCES

  • US 20100102641A1
  • Filed: 12/30/2009
  • Published: 04/29/2010
  • 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 receiving energy from an external power supply, said first resonator having a resonant frequency ω

    1, an intrinsic loss rate Γ

    1, and a first Q-factor Q1

    1L1/(R1ohm+R1rad), generating an oscillating near field region;

    providing a second electromagnetic resonator being positioned at variable distances from said first resonator and not electrically wired to said first resonator, said second resonator having a resonant frequency ω

    2, an intrinsic loss rate Γ

    2, and a second Q-factor Q2

    2L2/(R2ohm+R2rad); and

    transferring electromagnetic energy from said first resonator to said second resonator over a variable distance D that is within the near-field region of the first resonator structure, andwherein R1ohm>

    R1rad, and R2ohm>

    R2rad.

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