WIRELESS ENERGY TRANSFER
3 Assignments
0 Petitions
Accused Products
Abstract
Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure.
364 Citations
117 Claims
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1-73. -73. (canceled)
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74. A wireless charging receive high-Q magnetic resonator, comprising:
a first loop of an energy receiving conductor forming a loop resonator to resonate at a wireless charging frequency, the wireless charging receive resonator further coupling with an electronic device and for providing wirelessly received power from another high-Q magnetic resonator to the electronic device. - View Dependent Claims (75, 76, 77, 78, 79, 80, 81)
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82. An apparatus, comprising:
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an electronic circuit in a housing for performing an electronic function of a device; and a wireless charging receiver circuit coupled to the electronic circuit for providing wirelessly received power from a high-Q magnetic resonator to the electronic circuit, including; a wireless charging receive high-Q magnetic resonator for resonating at a wireless charging frequency, the wireless charging receive resonator integrated with the device. - View Dependent Claims (83, 84, 85, 86, 87, 88, 89, 90)
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91. A wireless device, comprising:
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a housing; electronic circuit operational according to operational power, the electronic circuit further enclosed within a housing; and wireless charging circuitry for providing the operation power, the wireless charging circuitry comprising; a multi-turn loop high-Q magnetic resonator for resonating in a near-field coupling mode region of a resonating high-Q source resonator and to generate the operational power therefrom, the multi-turn loop resonator positioned in the housing. - View Dependent Claims (92, 93)
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94. A wireless power-receive circuit for receiving power from a high-Q source resonator, comprising:
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a high-Q receive resonator for coupling with a magnetic near field at a resonant frequency; a capacitance element in the receive resonator and comprising a capacitance value and an equivalent series resistance value; a resistance element operably coupled in series with the capacitance element; and a load operably coupled to the receive resonator and for drawing power from the magnetic near field when the wireless power-receive circuit oscillates substantially near the resonant frequency.
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95. A wireless power-transmit circuit, comprising:
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a high-Q source magnetic resonator for generating a magnetic near field at a resonant frequency; a capacitance element in the the source resonator and comprising a capacitance value and an equivalent series resistance value; a resistance element operably coupled in series with the capacitance element; and a signal generator for applying a signal power to the wireless power-transmit circuit such that the wireless power-transmit circuit oscillates substantially near the resonant frequency.
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96. A wireless power-repeater circuit, comprising:
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a repeater resonator for coupling with a magnetic near field in a coupling-mode region at a resonant frequency and generating a repeated coupling-mode region different from the coupling-mode region; a capacitance element in the repeater resonator and comprising a capacitance value and an equivalent series resistance value. a resistance element operably coupled in seriess with the capacitance element
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97. A method, comprising:
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generating an electromagnetic field at a resonant frequency of a high-Q source resonator to create a coupling-mode region within a near field of the source resonator; and receiving power from the coupling-mode region with a high-Q receive resonator disposed within the coupling-mode region, wherein the receive resonator resonates substantially near the resonant frequency.
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98. A method, comprising:
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generating an electromagnetic field at a resonant frequency of a high-Q source resonator to create a coupling-mode region within a near field of the source resonator; repeating the electromagnetic field to create a repeated coupling-mode region different from the coupling-mode region with a repeater resonator; and receiving power from the repeated coupling-mode region with a receive resonator disposed within the coupling-mode region, wherein the receive resonator resonates substantially near the resonant frequency; wherein at least one of the receive resonator and the repeater resonator is a high-Q resonator.
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99. A wireless power transfer system, comprising:
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a means for generating an electromagnetic field at a resonant frequency of a high-Q source resonator to create a coupling-mode region within a near field of the source resonator; and a means for receiving power from the coupling-mode region with a high-Q receive resonator disposed within the coupling-mode region, wherein the receive resonator resonates substantially near the resonant frequency.
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100. A wireless power transfer system, comprising:
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a means for generating an electromagnetic field at a resonant frequency of a high-Q source resonator to create a coupling-mode region within a near field of the source resonator; a means for repeating the electromagnetic field to create a repeated coupling-mode region different from the coupling-mode region with a repeater resonator; and a means for receiving power from the repeated coupling-mode region with a receive resonator disposed within the repeated coupling-mode region, wherein the receive resonator resonates substantially near the resonant frequency; wherein at least one of the repeater resonator and the receive resonator is a high-Q resonator.
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101. A wireless power receiver, comprising:
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a high-Q receive resonator for coupling with a high-Q source resonator through a magnetic near field generated by the source resonator to generate an RF signal; a monitor operably coupled to the receive resonator to to generate monitor signals indicative of the coupling; a feedback circuit to generate control signals responsive to the monitor signals; and a variable capacitor network operably coupled to the control signals, the variable capacitor network to modify a resonance characteristic of the receive resonator and the variable capacitor network by modifying a capacitance of the variable capacitor network responsive to the control signals. - View Dependent Claims (102, 103)
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104. A wireless power transmitter, comprising:
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a high-Q source resonator for generating a magnetic near field for coupling to a high-Q receive resonator; a monitor operably coupled to the source resonator to generate monitor signals indicative of the coupling; a feedback circuit to generate control signals responsive said monitor signals; and a variable capacitor network operably coupled to the control signals, the variable capacitor network to modify a resonance characteristic of the source resonator and the variable capacitor network by modifying a capacitance of the variable capacitor network responsive to the control signals. - View Dependent Claims (105, 106)
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107. A wireless power transmitter, comprising:
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a high-Q source resonator for generating a magnetic near field for coupling to a high-Q receive resonator; a drive circuit for applying an RF signal to the source resonator; a monitor that generates a load indication signal; a feedback circuit operably coupled to the load indication signal and to generate control signals responsive to the load indication signal; and a variable capacitor network, the variable capacitor network to modify a resonance characteristic of the source resonator and the variable capacitor network by modifying a capacitance of the variable capacitor network responsive to the load indication signal. - View Dependent Claims (108, 109)
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110. A method, comprising:
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generating an electromagnetic field at a resonant frequency of a high-Q source resonator to create a coupling-mode region within a near field of the source resonator; disposing a high-Q receive resonator within the coupling-mode region, wherein the receive resonator resonates substantially near the resonant frequency; and adaptively tuning a tunable resonator selected from the group consisting of the source resonator and the receive resonator by; monitoring a mismatch at the tunable resonator; and modifying a resonance characteristic of the tunable resonator by adjusting a capacitance of a variable capacitor network operably coupled to the tunable resonator. - View Dependent Claims (111, 112, 113)
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114. A wireless power transfer system, comprising:
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means for generating an electromagnetic field at a resonant frequency of a high-Q source resonator to create a coupling-mode region within a near field of the source resonator; means for receiving the resonant frequency within the coupling-mode region with a high-Q receive resonator, wherein the receive resonator resonates substantially near the resonant frequency; and means for adaptively tuning a tunable resonator selected from the group consisting of the transmit resonator and the receive resonator using; a monitor circuit; and feedback means for modifying a resonance characteristic of the tunable resonator by adjusting the capacitance of a variable capacitor network operably coupled to the tunable resonator. - View Dependent Claims (115, 116, 117)
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Specification