Wireless non-radiative energy transfer

  • US 8,084,889 B2
  • Filed: 03/31/2009
  • Issued: 12/27/2011
  • Est. Priority Date: 07/12/2005
  • Status: Active Grant
  • ×
    • Pin Icon | RPX Insight
    • Pin
First Claim
Patent Images

1. A system for wirelessly providing power to a load, the system comprising:

  • a first electromagnetic resonator configured to be coupled to a power supply, the first resonator having a characteristic size L1, a resonant frequency ω

    1, an intrinsic loss rate Γ

    1, and a first Q-factor Q1

    1/(2Γ

    1);

    a second electromagnetic resonator configured to be coupled to the load, the second resonator having a characteristic size L2, a resonant frequency ω

    2, an intrinsic loss rate Γ

    2, and a second Q-factor Q2

    2/(2Γ

    2),wherein the first and second resonators are configured to be wirelessly coupled to provide resonant non-radiative wireless power to the second resonator from the first resonator with a wireless energy transfer rate κ

    , andwherein the resonators satisfy κ

    /√

    {square root over (Γ

    1Γ

    2)}>

    1 for at least some distances D between the first and second resonators satisfying D/L2>

    1.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×