Patent ID: 9667322
Date: 2017-05-30
CPC Classifications: H02J,H04B

Claim:
1. A wireless power transfer device, comprising: a coil module configured to send or receive wireless power transfer signals, the coil module including a coil circuit; a tuning observer module configured to detect a tuning state of the wireless power transfer device, the tuning state being one of a tuned state or an out-of-tune state; and a resonance controller module configured to adjust at least one parameter of the coil module in response to the tuning observer module detecting an out-of-tune state in order to provide the tuned state, wherein the resonance controller module is further configured to determine whether a load of a recipient device is known, and in response to a determination that the load of the recipient device is not known, select the at least one parameter to be an adjustable parameter of the coil circuit, and in response to a determination that the load of the recipient device is known, select the at least one parameter to be a frequency of an input signal input to the coil module.