Abstract: A wireless power receiver may include a receive coil configured to generate an AC power signal, at least one secondary sensing coil configured to generate a measurement signal responsive to a magnetic flux field, and control logic configured to detect at least one condition of a wireless power transfer system responsive to detecting distortion in the magnetic flux field from the at least one measurement signal received from the secondary sensing coil. A related method may include receiving with a wireless power receiver a wireless power signal for wireless power transfer from a wireless power transmitter, generating with a plurality of secondary sensing coils one or more measurement signals responsive to a magnetic flux field generated during the wireless power transfer, and detecting at least one condition of a wireless power transfer system responsive to the one or more measurement signals generated by the plurality of secondary sensing coils.

Abstract: A wireless power enabled apparatus may comprise a wireless power receiver that includes a receive coil configured to generate an AC power signal responsive to a wireless power signal, a rectifier including a plurality of switches configured to receive the AC power signal and generate a DC rectified power signal, a regulator operably coupled with the rectifier to receive the DC rectified power signal and generate an output power signal, and control logic configured to generate a communication signal responsive to adjusting an input impedance of the regulator. A method of operating a wireless power receiver includes generating a rectified voltage responsive to receiving a wireless power signal, generating an output voltage from the rectified voltage with a voltage regulator, and controlling the voltage regulator during a communication mode of wireless power receiver to modulate a characteristic of the voltage regulator with data for transmission to a wireless power transmitter.

Abstract: A wireless power receiver may include a receive coil configured to generate an AC power signal, at least one secondary sensing coil configured to generate a measurement signal responsive to a magnetic flux field, and control logic configured to detect at least one condition of a wireless power transfer system responsive to detecting distortion in the magnetic flux field from the at least one measurement signal received from the secondary sensing coil. A related method may include receiving with a wireless power receiver a wireless power signal for wireless power transfer from a wireless power transmitter, generating with a plurality of secondary sensing coils one or more measurement signals responsive to a magnetic flux field generated during the wireless power transfer, and detecting at least one condition of a wireless power transfer system responsive to the one or more measurement signals generated by the plurality of secondary sensing coils.

Abstract: A wireless power enabled apparatus may comprise a wireless power receiver that includes a receive coil configured to generate an AC power signal responsive to a wireless power signal, a rectifier including a plurality of switches configured to receive the AC power signal and generate a DC rectified power signal, a regulator operably coupled with the regulator to receive the DC rectified power signal and generate an output power signal, and control logic configured to generate a communication signal responsive to adjusting an input impedance of the regulator. A method of operating a wireless power receiver includes generating a rectified voltage responsive to receiving a wireless power signal, generating an output voltage from the rectified voltage with a voltage regulator, and controlling the voltage regulator during a communication mode of wireless power receiver to modulate a characteristic of the voltage regulator with data for transmission to a wireless power transmitter.