Wireless energy transfer
First Claim
Patent Images
1. A system, comprising:
- a source resonator optionally coupled to an energy source;
a second resonator located a distance from the source resonator; and
a third resonator located a distance from the source resonator and the second resonator;
wherein the source resonator, the second resonator, and the third resonator are coupled to provide non-radiative wireless energy transfer among the resonators and wherein the second resonator is configured to receive energy from the source resonator and to transfer energy to the third resonator,wherein each resonator is an electromagnetic resonator having an angular resonant frequency ω
, an intrinsic loss rate Γ
, and a Q-factor Q=ω
/(2Γ
), and wherein the Q-factor for at least one of the resonators is greater than 100.
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Abstract
Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure.
625 Citations
39 Claims
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1. A system, comprising:
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a source resonator optionally coupled to an energy source; a second resonator located a distance from the source resonator; and a third resonator located a distance from the source resonator and the second resonator; wherein the source resonator, the second resonator, and the third resonator are coupled to provide non-radiative wireless energy transfer among the resonators and wherein the second resonator is configured to receive energy from the source resonator and to transfer energy to the third resonator, wherein each resonator is an electromagnetic resonator having an angular resonant frequency ω
, an intrinsic loss rate Γ
, and a Q-factor Q=ω
/(2Γ
), and wherein the Q-factor for at least one of the resonators is greater than 100. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A system for use in wireless energy transfer, the system comprising:
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a first electromagnetic resonator having an angular resonant frequency ω
1, an intrinsic loss rate Γ
1, and a first Q-factor Q1=ω
/(2Γ
);a second electromagnetic resonator having an angular resonant frequency ω
1, an intrinsic loss rate Γ
2, and a first Q-factor Q2=ω
/(2Γ
); andone or more additional electromagnetic resonators, wherein the electromagnetic resonators are coupled to provide non-radiative wireless energy transfer among the resonators, and wherein at least one of Q1 and Q2 is greater than 100. - View Dependent Claims (37, 38, 39)
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Specification