Qualcomm Incorporated

Sergio P Estrada

Zhen Ning Low

Charles E Wheatley, Iii

Adam A Mudrick

William Henry Von Novak, Iii

William H Von Novak

Iii Charles E Wheatley

Charles E Iii Wheatley

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.

Parasitic circuit for device protection

Exemplary embodiments are directed to detecting and limiting power transfer to non-compliant devices. A method may include detecting one or more non-compliant devices positioned within a charging region of a wireless power transmitter. The method may further include limiting an amount of power delivered to at least one of the one or more non-compliant devices.

Detection and protection of devices within a wireless power system

Exemplary embodiments are directed to controlling impedance. A wireless power transmitter for controlling impedance comprises a transmit circuit configured to wirelessly transmit power to a plurality of receivers, each having a load resistance, within a charging region of the transmit circuit. The transmitter also comprises a controller configured to request each receiver of the plurality of receivers to adjust its load resistance to a value that achieves a target total impedance as presented to the controller.

Wireless power distribution among a plurality of receivers

Exemplary embodiments are directed to power distribution among a plurality of receivers. A method may include requesting at least one receiver of a plurality of receivers within a charging region of a transmitter to modify an associated load resistance to achieve a desired power distribution among the plurality of receivers. The method may further include requesting each receiver of the plurality of receivers to modify an associated load resistance to achieve a desired total impedance as seen by the transmitter while maintaining the desired power distribution among the plurality of receivers.

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San Diego, CA, United States of America

Sergio P Estrada