PARASITIC CIRCUIT FOR DEVICE PROTECTION

摘要

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.

主权项

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.