Wireless energy transfer systems
DCFirst Claim
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1. A system, comprising:
- a source resonator having a Q-factor Q1 and a characteristic size x1, coupled to a power generator with direct electrical connections; and
a second resonator having a Q-factor Q2 and a characteristic size x2, coupled to a load with a second direct electrical connection, and located a distance D from the source resonator, wherein the source resonator and the second resonator are coupled to exchange energy wirelessly among the source resonator and the second resonator in order to transmit power from the power generator to the load, wherein √
{square root over (Q1Q2)} is greater than 100, wherein at least one of the source resonator and the second resonator is a coil of at least one turn of a conducting material connected to a first network of capacitors, and wherein the direct electrical connections of at least one of the source resonator to the ground terminal of the power generator and the second resonator to the ground terminal of the load is made at a point on an axis of electrical symmetry of the first network of capacitors.
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Abstract
Described herein are improved capabilities for a source resonator having a Q-factor Q1>100 and a characteristic size x1 coupled to an energy source, and a second resonator having a Q-factor Q2>100 and a characteristic size x2 coupled to an energy drain located a distance D from the source resonator, where the source resonator and the second resonator are coupled to exchange energy wirelessly among the source resonator and the second resonator.
751 Citations
17 Claims
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1. A system, comprising:
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a source resonator having a Q-factor Q1 and a characteristic size x1, coupled to a power generator with direct electrical connections; and a second resonator having a Q-factor Q2 and a characteristic size x2, coupled to a load with a second direct electrical connection, and located a distance D from the source resonator, wherein the source resonator and the second resonator are coupled to exchange energy wirelessly among the source resonator and the second resonator in order to transmit power from the power generator to the load, wherein √
{square root over (Q1Q2)} is greater than 100, wherein at least one of the source resonator and the second resonator is a coil of at least one turn of a conducting material connected to a first network of capacitors, and wherein the direct electrical connections of at least one of the source resonator to the ground terminal of the power generator and the second resonator to the ground terminal of the load is made at a point on an axis of electrical symmetry of the first network of capacitors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system, comprising:
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a source resonator having a Q-factor Q1 and a characteristic size x1, and a second resonator having a Q-factor Q2 and a characteristic size x2, and located a distance D from the source resonator; wherein the source resonator and the second resonator are coupled to exchange energy wirelessly among the source resonator and the second resonator; and wherein √
{square root over (Q1Q2)} is greater than 100, and wherein at least one of the resonators is enclosed in a low loss tangent material.
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17. A system, comprising:
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a source resonator having a Q-factor Q1 and a characteristic size x1, and a second resonator having a Q-factor Q2 and a characteristic size x2, and located a distance D from the source resonator; wherein the source resonator and the second resonator are coupled to exchange energy wirelessly among the source resonator and the second resonator, and wherein √
{square root over (Q1Q2)} is greater than 100; andwherein at least one of the resonators includes a coil of a plurality of turns of a conducting material connected to a network of capacitors, wherein the plurality of turns are in a common plane, and wherein a characteristic thickness of the at least one of the resonators is much less than a characteristic size of the at least one of the resonators.
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Specification