PARASITIC CIRCUIT FOR DEVICE PROTECTION
First Claim
1. A device for providing protection from wireless power, comprising:
- a first circuit configured to wirelessly receive power via a first magnetic field at an operational frequency from a transmitter to power or charge a load; and
a second circuit configured to generate an opposing magnetic field that opposes at least a portion of the first magnetic field at the operational frequency, wherein the second circuit is configured to exhibit a first impedance in response to the operational frequency and exhibit a second impedance in response to a different frequency from the operational frequency.
1 Assignment
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Accused Products
Abstract
Exemplary embodiments are directed to a device include a parasitic coil for protection of the device. A device may include a first circuit configured to receive a first transmitted signal at an operational frequency. The device may also include a second circuit a second circuit configured to generate a field that opposes at least one of an undesirable portion of a wireless power field of the first transmitted signal and a portion of another wireless power field proximate the first circuit, the another wireless power field generated by a second transmitted signal at a non-operational frequency of the first circuit.
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Citations
20 Claims
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1. A device for providing protection from wireless power, comprising:
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a first circuit configured to wirelessly receive power via a first magnetic field at an operational frequency from a transmitter to power or charge a load; and a second circuit configured to generate an opposing magnetic field that opposes at least a portion of the first magnetic field at the operational frequency, wherein the second circuit is configured to exhibit a first impedance in response to the operational frequency and exhibit a second impedance in response to a different frequency from the operational frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for providing protection from wireless power, comprising:
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receiving power by a first circuit via a first magnetic field at an operational frequency from a transmitter to power or charge a load; and generating an opposing magnetic field by a second circuit that opposes at least a portion of the first magnetic field at the operational frequency, wherein the second circuit is configured to exhibit a first impedance in response to the operational frequency and exhibit a second impedance in response to a different frequency from the operational frequency. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A device for providing protection from wireless power, comprising:
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means for receiving power via a first magnetic field at an operational frequency from a transmitter to power or charge a load; and means for generating an opposing magnetic field that opposes at least a portion of the first magnetic field at the operational frequency, wherein the means for generating is configured to exhibit a first impedance in response to the operational frequency and exhibit a second impedance in response to a different frequency from the operational frequency.
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Specification