WIRELESS ENERGY TRANSFER USING COUPLED RESONATORS
First Claim
Patent Images
1. A method of transmitting power wirelessly, comprising:
- driving a high-Q non-radiative resonator at a value near its resonant frequency to produce a magnetic field output, said non-radiative-resonator formed of a combination of resonant parts, including at least an inductive part formed by a wire loop, and a capacitor part that is separate from a material forming the inductive part; and
maintaining at least one characteristic of said resonator such that its usable range has a usable distance over which power can be received, which distance is set by a detuning effect when a metallic structure gets too close to said resonator.
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Abstract
Described herein are embodiments of transmitting power wirelessly that includes driving a high-Q non-radiative resonator at a value near its resonant frequency to produce a magnetic field output, said non-radiative-resonator formed of a combination of resonant parts, including at least an inductive part formed by a wire loop, and a capacitor part that is separate from a material forming the inductive part, and maintaining at least one characteristic of said resonator such that its usable range has a usable distance over which power can be received, which distance is set by a detuning effect when a metallic structure gets too close to said resonator.
529 Citations
79 Claims
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1. A method of transmitting power wirelessly, comprising:
driving a high-Q non-radiative resonator at a value near its resonant frequency to produce a magnetic field output, said non-radiative-resonator formed of a combination of resonant parts, including at least an inductive part formed by a wire loop, and a capacitor part that is separate from a material forming the inductive part; and
maintaining at least one characteristic of said resonator such that its usable range has a usable distance over which power can be received, which distance is set by a detuning effect when a metallic structure gets too close to said resonator.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method, comprising:
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generating a magnetic field using a first high-Q resonator; receiving said magnetic field in a second high-Q resonator; and in said second high-Q resonator, using power from the magnetic field. - View Dependent Claims (16, 17)
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18. A method, comprising:
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forming a magnetic field using a first high-Q part; coupling said magnetic field to a second high-Q part using near-field coupling with said first part, where said second part is further than 6 inches from said first part; and in said second part, recovering power from the coupled magnetic field. - View Dependent Claims (19, 20)
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21. A system comprising:
a high-Q resonator;
a driving part for said resonator, driving said resonator at a value near its resonant frequency to produce a magnetic field output, said resonator formed of a combination of series resonant parts, including at least an inductive part formed by a wire loop, and a capacitor part that is separate from a material forming the inductive part, and wherein said resonator has at least one characteristic such that its usable range has a usable distance over which power can be received, which distance is set by a detuning effect when a metallic structure gets too close to said resonator.- View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A system, comprising:
- a first high-Q resonator part formed of a capacitively loaded resonator;
a second high-Q resonator part, tuned to have similar resonant characteristics to said first resonator part, receiving a magnetic field therefrom, and producing a power output from the magnetic field.
- a first high-Q resonator part formed of a capacitively loaded resonator;
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35. A system, comprising:
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a first high-Q LC circuit, connected to receive a signal that forms a magnetic field; and a second high-Q LC circuit that forms near-field coupling with said first high-Q LC circuit, where said second part is further than 6 inches from said first part, and has a connection for recovering power from the coupled magnetic field. - View Dependent Claims (36)
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37. A method of transmitting power wirelessly, comprising:
driving a high-Q resonator at a value near a resonant frequency of said resonator to produce a magnetic field output, said resonator defining a distance between a metallic structure and said resonator, and formed of a combination of resonant parts, including at least an inductive part formed by a wire loop, and a capacitor part that is separate from a material forming the inductive part; and
maintaining at least one characteristic of said resonator such that its usable range has a usable distance over which power can be received, which distance is set by an effect when a metallic structure gets too close to said resonator.- View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 79)
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49. A method, comprising:
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generating a magnetic field using a first high-Q resonator; receiving said magnetic field in a second high-Q resonator; and in said second high-Q resonator, using power from the magnetic field. - View Dependent Claims (50, 51)
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52. A method, comprising:
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forming a magnetic field using a high-Q first part; coupling said magnetic field to a second high-Q part using near-field coupling with said first part, where said second part is further than 6 inches from said first part; and in said second part, recovering power from the coupled magnetic field. - View Dependent Claims (53, 54)
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55. A system comprising:
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a high-Q resonator; a driving part for said resonator, driving said resonator at a value near a resonant frequency of said resonator to produce a magnetic field output, said resonator formed of a combination of parts, including at least an inductive part formed by a wire loop, and a capacitor part that is separate from a material forming the inductive part, and wherein said resonator has at least one characteristic such that its usable range has a usable distance over which power can be received, which distance is set by a detuning effect that changes said resonant frequency when a metallic structure gets too close to said resonator. - View Dependent Claims (56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66)
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67. A system, comprising:
a first high-Q resonator part formed of a capacitively loaded resonator; and
a second high-Q resonator part, tuned to have similar resonant characteristics to said first resonator part, receiving a magnetic field therefrom, and producing a power output from the magnetic field.
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68. A system, comprising:
a first high-Q LC circuit, connected to receive a signal that forms a magnetic field; and
a second high-Q LC circuit that forms near-field coupling with said first high-Q LC circuit, where said second part is further than 6 inches from said first part, and has a connection for recovering power from the coupled magnetic field.
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69. A method of wirelessly receiving power, comprising:
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receiving power from a high-Q resonator, by interacting with said resonator at a value near its resonant frequency to produce a power output from a received magnetic field, said receiving comprising connecting a receiving circuit directly to a first high-Q resonator, and also receiving wireless power in a second high-Q resonator loop formed of a combination of resonant parts, including at least an inductive part and a capacitance, where said second resonator loop is physically separated from said first high-Q resonator. - View Dependent Claims (70, 71, 72, 73)
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74. A method of wirelessly transmitting power, comprising:
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producing a magnetic power signal at a first frequency; coupling said power signal to a first high-Q inductive loop by connecting to said first inductive loop; and inducing said power signal into a second high-Q inductive loop from the first inductive loop, said second inductive loop having a resonant frequency substantially matched to said first frequency. - View Dependent Claims (75, 76, 77, 78)
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Specification