Patent ID: 8796887
Filing Date: 2014-08-05
Classification: H01F,H02J,H04B

Abstract:
1. A wireless power receiver, comprising: an antenna comprising a resonant circuit having a resonant circuit impedance, the antenna configured to receive a wireless power signal from a wireless power transmitter; a rectifier coupled to the antenna and configured to convert the wireless power signal to a direct current input signal, the direct current input signal having voltage and current signals; a direct current-to-direct current converter having an converter impedance, the direct current-to-direct current converter configured to generate a direct current output signal based at least in part on the direct current input signal and configured to adjust the converter impedance based at least in part on a control signal, the resonant circuit impedance responsive to adjustments in the converter impedance of the direct current-to-direct current converter; and a circuit configured to adjust the control signal based at least in part on one of the voltage signal or the current signal of the direct current input signal.