Patent ID: 8400022

Claim:
A method of transferring electromagnetic energy comprising: providing a first electromagnetic resonator receiving energy from a power supply, said first resonator having a first mode with a resonant frequency ω 1 , an intrinsic loss rate Γ 1 , and a first Q-factor Q 1 =ω 1 /(2Γ 1 ); providing a second electromagnetic resonator being positioned distal from said first resonator and not electrically wired to the first resonator, said second resonator having a second mode with a resonant frequency ω 2 , an intrinsic loss rate Γ 2 , and a second Q-factor Q 2 =ω 2 /(2Γ 2 ); and transferring electromagnetic energy wirelessly from said first resonator to said second resonator over a distance D that is smaller than each of resonant wavelengths λ 1 and λ 2 corresponding to the resonant frequencies ω 1 and ω 2 , respectively, wherein the electromagnetic resonators are designed to have √{square root over (Q 1 Q 2 )}>100; and wherein the absolute value of the difference of said resonant frequencies ω 1 and ω 2 is smaller than a magnitude of the wireless energy transfer rate, κ.