Wireless energy transfer with high-Q to more than one device

摘要

Described herein are embodiments of a source high-Q resonator, optionally coupled to an energy source, a second high-Q resonator, optionally coupled to an energy drain that may be located a distance from the source resonator. A third high-Q resonator, optionally coupled to an energy drain that may be located a distance from the source resonator. The source resonator and at least one of the second resonator and third resonator may be coupled to transfer electromagnetic energy from said source resonator to said at least one of the second resonator and third resonator.

主权项

1. A system, comprising:
a source resonator having a resonant frequency ω1, an intrinsic loss rate Γ1, and capable of storing electromagnetic energy with a high intrinsic quality factor Q1=ω1/(2Γ1), the source resonator configured to be coupled to an energy source; a second resonator having a resonant frequency ω2, an intrinsic loss rate Γ2, and capable of storing electromagnetic energy with a high intrinsic quality factor Q2 =ω2 /(2Γ2), the second resonator located a distance from the source resonator; and a third resonator having a resonant frequency ω3, an intrinsic loss rate Γ2, and capable of storing electromagnetic energy with a high intrinsic quality factor Q3=ω3/(2Γ3), the third resonator located a distance from the source resonator, wherein the source resonator and at least one of the second resonator and third resonator are configured to be coupled to wirelessly transfer electromagnetic energy from said source resonator to said at least one of the second resonator and third resonator when the source resonator is coupled to the energy source, and wherein Q1>100 and Q2 >100, wherein the resonators are movable relative to one another and wherein the wireless energy transfer occurs over a range of distances, and wherein κ/√{square root over (Γ1Γ2)}>0.2 over the range of distances, wherein κ is the wireless energy transfer rate.