| 摘要 |
PURPOSE: A wireless power transmitter, a wireless power receiver, a wireless power transmitting system, and a wireless power transmitting method are provided to improve power transmission efficiency by changing output impedance. CONSTITUTION: A transmitting unit(210) transmits power to a wireless power receiver. The wireless power receiver includes a rectifier(320). The power is supplied from a power source. A detector(220) detects an input current of the power source and the change of output impedance by using the detected average input current. [Reference numerals] (220) Detector; (230) Determining unit; (240) Power control unit; (320) Rectifier; (330) Control unit |
