Described herein are improved capabilities for a source resonator having a Q-factor Q1100 and a characteristic size x1 coupled to an energy source, and a second resonator having a Q-factor Q2100 and a characteristic size x2 coupled to an energy drain located a distance D from the source resonator, w
Described herein are improved capabilities for a source resonator having a Q-factor Q1100 and a characteristic size x1 coupled to an energy source, and a second resonator having a Q-factor Q2100 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.
대표청구항▼
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; anda second resonator having a Q-factor Q2 and a characteristic size x2, coupled to a load with a second direct electrical connection, and l
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; anda 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. 2. The system of claim 1, wherein the first network of capacitors includes at least one tunable butterfly-type capacitor, wherein the direct electrical connection to the ground terminal is made on a center terminal of the at least one tunable butterfly-type capacitor. 3. The system of claim 1, wherein the direct electrical connection of at least one of the source resonator to the power generator and the second resonator to the load is made via a second network of capacitors, wherein the first network of capacitors and the second network of capacitors form an impedance matching network. 4. The system of claim 3, wherein the impedance matching network is designed to match the coil to a characteristic impedance of the power generator or the load at a driving frequency of the power generator. 5. The system of claim 3, wherein at least one of the first network of capacitors and the second network of capacitors includes at least one tunable capacitor. 6. The system of claim 5, wherein the first network of capacitors and the second network of capacitors are adjustable to change an impedance of the impedance matching network at a driving frequency of the power generator. 7. The system of claim 5, wherein the first network of capacitors and the second network of capacitors are adjustable to match the coil to the characteristic impedance of the power generator or the load at a driving frequency of the power generator. 8. The system of claim 5, wherein at least one of the first network of capacitors and the second network of capacitors includes at least one fixed capacitor that reduces a voltage across the at least one tunable capacitor. 9. The system of claim 1, wherein the direct electrical connections of at least one of the source resonator to the power generator and the second resonator to the load are configured to substantially preserve a resonant mode. 10. The system of claim 1, wherein at least one of the source resonator and the second resonator is a tunable resonator. 11. The system of claim 1, wherein the source resonator is physically separated from the power generator and the second resonator is physically separated from the load. 12. The system of claim 1, wherein the second resonator is coupled to a power conversion circuit to deliver DC power to the load. 13. The system of claim 1, wherein the second resonator is coupled to a power conversion circuit to deliver AC power to the load. 14. The system of claim 1, wherein the second resonator is coupled to a power conversion circuit to deliver both AC and DC power to the load. 15. The system of claim 1, wherein the second resonator is coupled to a power conversion circuit to deliver power to a plurality of loads. 16. A system, comprising: 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; andwherein √{square root over (Q1Q2)} is greater than 100, and wherein at least one of the resonators is enclosed in a low loss tangent material. 17. A system, comprising: 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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