Patent ID: 9640317
Date: 2017-05-02
CPC Classifications: B60L,H01F,H02J,H03H,H04B,Y02T

Claim:
1. A wireless power supply transmitter configured to transmit an electric power signal comprising any one from among an electric field, a magnetic field, and an electromagnetic field to a wireless power receiver, the wireless power supply transmitter comprising: a transmission antenna comprising a transmission coil; an AC power supply comprising a half bridge type or an H-bridge type inverter, wherein one output of the inverter is coupled to one end of the transmission antenna, and another output of the inverter is coupled to another end of the transmission antenna, and the AC power supply is configured to apply an AC driving voltage across the transmission antenna; and an automatic tuning assist circuit coupled with the transmission antenna, and configured to inject a correction current into, or otherwise to draw a correction current from, the transmission antenna, wherein the automatic tuning assist circuit comprises: