MAGNETIC RESONANCE COUPLING ARRANGEMENT
First Claim
1. A wireless power transfer system, comprising:
- a first resonator having a first resonant frequency ω
o1, a half power bandwidth Δ
ω
1, and an unloaded quality factor Qo1=ω
o1/Δ
ω
1 coupled through a first coupling circuit to a power source; and
a second resonator having a second resonant frequency ω
o2, a half power bandwidth Δ
ω
2, and an unloaded quality factor Qo2=ω
o2/Δ
ω
2 coupled through a second coupling circuit to a load, the first resonator disposed a distance away from the second resonator, wherein the distance is smaller than the first and second resonant wavelengths;
the first and second coupling circuits configured so that up to a maximum achievable power transfer efficiency between the first and second resonators can be achieved, wherein Qo1 and Qo2 can be less than 100.
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Accused Products
Abstract
A wireless power transfer system is disclosed. The system includes a first resonator having a first resonant frequency ωo1, a half power bandwidth Δω1, and an unloaded quality factor Qo1=ωo1/Δω1 coupled through a first coupling circuit to a power source, a second resonator having a second resonant frequency ωo2, a half power bandwidth Δω2, and an unloaded quality factor Qo2=ωo2/Δω2 coupled through a second coupling circuit to a load, the first resonator disposed a distance away from the second resonator, wherein the distance is smaller than the first and second resonant wavelengths, the first and second coupling circuits are configured so that up to a maximum achievable power transfer efficiency between the first and second resonators can be achieved, wherein Qo1 and Qo2 can be less than 100.
31 Citations
12 Claims
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1. A wireless power transfer system, comprising:
-
a first resonator having a first resonant frequency ω
o1, a half power bandwidth Δ
ω
1, and an unloaded quality factor Qo1=ω
o1/Δ
ω
1 coupled through a first coupling circuit to a power source; anda second resonator having a second resonant frequency ω
o2, a half power bandwidth Δ
ω
2, and an unloaded quality factor Qo2=ω
o2/Δ
ω
2 coupled through a second coupling circuit to a load, the first resonator disposed a distance away from the second resonator, wherein the distance is smaller than the first and second resonant wavelengths;the first and second coupling circuits configured so that up to a maximum achievable power transfer efficiency between the first and second resonators can be achieved, wherein Qo1 and Qo2 can be less than 100. - View Dependent Claims (2, 3, 4, 5, 6, 12)
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7. A method of providing a maximum wireless power transfer efficiency between a first resonator and a second resonator, comprising:
-
providing a first resonator having a first resonant frequency ω
o1, a half power bandwidth Δ
ω
1, and an unloaded quality factor Qo1=ω
o1/Δ
ω
1 coupled through a first coupling circuit to a power source;providing a second resonator having a second resonant frequency ω
o2, a half power bandwidth Δ
ω
2, and an unloaded quality factor Qo2=ω
o2/Δ
ω
2 coupled through a second coupling circuit to a load, the first resonator disposed a distance away from the second resonator, wherein the distance is smaller than the first and second resonant wavelengths;configuring the first and second coupling circuits so that up to a maximum power transfer efficiency between the first and second resonators can be achieved, wherein Qo1 and Qo2 can be less than 100. - View Dependent Claims (8, 9, 10, 11)
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Specification