WIRELESS POWER TRANSFER RECEIVER HAVING CLOSED LOOP VOLTAGE CONTROL
First Claim
1. An apparatus for wirelessly receiving power via a wireless field generated by a transmitter, the apparatus comprising:
- a resonator configured to generate electrical current to power or charge a load based on a voltage induced in the resonator in response to the wireless field;
at least one variable capacitor electrically coupled to the resonator and configured to adjust a first capacitance of the at least one variable capacitor responsive to a first control signal; and
a control circuit configured to adjust and apply the first control signal to the at least one variable capacitor to simultaneously adjust a resonant frequency of the resonator and a current output to the load based on an electrical characteristic indicative of a level of power output to the load.
1 Assignment
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Accused Products
Abstract
An apparatus for wirelessly receiving power via a wireless field generated by a transmitter includes a resonator configured to generate electrical current to power or charge a load based on a voltage induced in the resonator in response to the wireless field, at least one variable capacitor electrically coupled to the resonator and configured to adjust a first capacitance of the at least one variable capacitor responsive to a first control signal, and a control circuit configured to adjust and apply the first control signal to the at least one variable capacitor to simultaneously adjust a resonant frequency of the resonator and a current output to the load based on an electrical characteristic indicative of a level of power output to the load.
42 Citations
30 Claims
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1. An apparatus for wirelessly receiving power via a wireless field generated by a transmitter, the apparatus comprising:
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a resonator configured to generate electrical current to power or charge a load based on a voltage induced in the resonator in response to the wireless field; at least one variable capacitor electrically coupled to the resonator and configured to adjust a first capacitance of the at least one variable capacitor responsive to a first control signal; and a control circuit configured to adjust and apply the first control signal to the at least one variable capacitor to simultaneously adjust a resonant frequency of the resonator and a current output to the load based on an electrical characteristic indicative of a level of power output to the load. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for wirelessly receiving power via a wireless field generated by a transmitter, the method comprising:
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generating an electrical current to power or charge a load based on a voltage induced in a resonator in response to the wireless field; adjusting a first capacitance of at least one variable capacitor responsive to a first control signal; and applying the first control signal to the at least one variable capacitor to simultaneously adjust a resonant frequency of the resonator and a current output to the load based on an electrical characteristic indicative of a level of power output to the load. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An apparatus for wirelessly receiving power via a wireless field generated by a transmitter, the apparatus comprising:
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a resonator configured to generate electrical current to power or charge a load based on a voltage induced in the resonator in response to the wireless field; at least one controllable element configured to simultaneously adjust a resonant frequency and a voltage output of the load in response to at least one control signal; and a control circuit configured to adjust and apply the at least one control signal to adjust a resonant frequency of the resonator and the voltage output to the load based on an electrical characteristic indicative of a level of power output to the load. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A method for wirelessly receiving power via a wireless field generated by a transmitter, the method comprising:
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generating electrical current to power or charge a load based on a voltage induced in a resonator in response to the wireless field; simultaneously adjusting a resonant frequency and a voltage output of a wireless power receiver in response to at least one control signal; and applying the at least one control signal to adjust the resonant frequency of the resonator and the voltage output to the load based on an electrical characteristic indicative of a level of power output to the load. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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Specification