WIRELESS NON-RADIATIVE ENERGY TRANSFER
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Accused Products
Abstract
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.
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Citations
58 Claims
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1-33. -33. canceled
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34. A wireless power system comprising:
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a source resonator configured to be coupled to a power supply to provide power to the source resonator, the source resonator having a resonant frequency ω
1, an intrinsic loss rate Γ
1, and capable of storing electromagnetic energy with an intrinsic quality factor Q1=ω
1/(2Γ
1), the source resonator comprising at least one loop of conductive material and further comprising a capacitance; anda device resonator and a load coupled to the device resonator to receive power from the device resonator, the device resonator having a resonant frequency ω
2, an intrinsic loss rate Γ
2, and capable of storing electromagnetic energy with an intrinsic quality factor Q2=ω
2/(2Γ
2), the device resonator comprising at least one loop of conductive material and further comprising a capacitance,wherein the source resonator and the device resonator are configured to resonantly and wirelessly couple electromagnetic power from the source resonator to the device resonator over a range of distances D between the source and device resonators using non-radiative electromagnetic induction having a coupling coefficient κ
,wherein Q1>
200 and Q2>
200, andwherein the source resonator and the device resonator each have a characteristic size, and wherein the characteristic size of the source resonator is not more than 100/30 times the characteristic size of the device resonator. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. A wireless power system comprising:
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a source resonator and a power supply coupled to the source resonator to provide power to the source resonator, the source resonator having a resonant frequency ω
1, an intrinsic loss rate Γ
1, and an intrinsic quality factor Q1=ω
1/(2Γ
1); anda device resonator and a load coupled to the device resonator to receive power from the device resonator, the device resonator having a resonant frequency ω
2, an intrinsic loss rate Γ
2, and an intrinsic quality factor Q2=ω
2/(2Γ
2),wherein the source resonator and the device resonator are configured to resonantly and wirelessly couple electromagnetic power from the source resonator to the device resonator over a range of distances D between the source resonator and the device resonator using non-radiative electromagnetic induction having a coupling coefficient κ
, and wherein the intrinsic loss rates satisfy κ
/√
{square root over (Γ
1Γ
2)}>
2 over the range of distances D between the source resonator and the device resonator,wherein Q1>
100 and Q2>
100, andwherein f1=ω
1/(2π
) and f2=ω
2/(2π
), and f1 and f2, are between 1 MHz and 10 MHz, and wherein each intrinsic loss rate comprises a resistive component and a radiative component. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53, 54)
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55. A method for providing wireless power to a load, the method comprising:
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providing a source resonator and a power supply coupled to the source resonator to provide power to the source resonator, the source resonator having a resonant frequency ω
1, an intrinsic loss rate Γ
1, and an intrinsic quality factor Q1=ω
1/(2Γ
1); andproviding a device resonator coupled to the load to provide power to the load, the device resonator having a resonant frequency ω
2, an intrinsic loss rate Γ
2, and an intrinsic quality factor Q2=ω
2/(2Γ
2),resonantly and wirelessly coupling electromagnetic power from the source resonator to the device resonator using non-radiative electromagnetic induction having a coupling coefficient κ
, and wherein the intrinsic loss rates satisfy κ
/√
{square root over (Γ
1Γ
2)}>
5 over a range of distances D between the source resonator and the device resonator,wherein Q1>
200 and Q2>
200. - View Dependent Claims (56)
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57. A method for providing wireless power to a load, the method comprising:
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providing a source resonator and a power supply coupled to the source resonator to provide power to the source resonator, the source resonator having a resonant frequency ω
1, an intrinsic loss rate Γ
1, and an intrinsic quality factor Q1=ω
1/(2Γ
1); andproviding a device resonator coupled to the load to provide power to the load, the device resonator having a resonant frequency ω
2, an intrinsic loss rate Γ
2, and an intrinsic quality factor Q2=ω
2/(2Γ
2),resonantly and wirelessly coupling electromagnetic power from the source resonator to the device resonator using non-radiative electromagnetic induction having a coupling coefficient κ
, and wherein the intrinsic loss rates satisfy κ
/√
{square root over (Γ
1Γ
2)}>
1 over a range of distances D between the source resonator and the device resonator,wherein Q1>
100 and Q2>
100, andwherein f1=ω
1/(2π
) and f2=ω
2/(2π
), and f1 and f2, are between 1 MHz and 10 MHz, and wherein each intrinsic loss rate comprises a resistive component and a radiative component. - View Dependent Claims (58)
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Specification