Wireless non-radiative energy transfer
AssigneeMassachusetts Institute of Technology
InventorsJohn D. Joannopoulos, Aristeidis Karalis, Marin Soljacic
Life of this patent
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Abstract
The electromagnetic energy transfer device includes a first resonator structure receiving energy from an external power supply. The first resonator structure has a first Q-factor. A second resonator structure is positioned distal from the first resonator structure, and supplies useful working power to an external load. The second resonator structure has a second Q-factor. The distance between the two resonators can be larger than the characteristic size of each resonator. Non-radiative energy transfer between the first resonator structure and the second resonator structure is mediated through coupling of their resonant-field evanescent tails.
Claims27
A system, comprising:
- a source resonator configured to be coupled to an energy source;
- and
- a second resonator located a distance from the source resonator;
- wherein the source resonator and the second resonator are coupled to provide resonant non-radiative wireless energy transfer between the source resonator and the second resonator and wherein at least one resonator is a tunable resonator,
- wherein the source resonator has a resonant frequency ω1, an intrinsic loss rate Γ1, and a first Q-factor Q1=ω1/(2Γ1), the second resonator has a resonant frequency ω2, an intrinsic loss rate Γ2, and a second Q-factor Q2=ω2/(2Γ2), and at least one of Q1 and Q2 is greater than 100.
A system, comprising:
- a source resonator configured to be coupled to an energy source;
- and
- a second resonator located a distance from the source resonator;
- wherein the source resonator and the second resonator are coupled to provide resonant non-radiative wireless energy transfer between the source resonator and the second resonator,
- wherein at least one resonator is a tunable resonator, and
- wherein at least one resonator is a high-Q resonator.
Dependencies are inferred from the claim text.