Transmitters for wireless power transmission

摘要

Exemplary embodiments are directed to wireless power transfer. A wireless power transmitter includes a transmit antenna configured as a resonant tank including a loop inductor and an antenna capacitance. The transmitter further includes an amplifier configured to drive the transmit antenna and a matching circuit operably coupled between the transmit antenna and the amplifier. The transmitter also includes a capacitor integrating the antenna capacitance and a matching circuit capacitance.

主权项

1. A wireless power transmitter, comprising:
a transmit circuit configured as a resonant tank comprising a first capacitor coupled with a first inductor, the transmit circuit configured to wirelessly transmit power in response to a time-varying signal; and a driver circuit operably coupled to the transmit circuit, the driver circuit configured to generate the time-varying signal, the driver circuit comprising: a second inductor coupled in series with the transmit circuit; and a second capacitor coupled in series with the second inductor and the transmit circuit; wherein the second inductor and the first capacitor define a filter configured to provide load matching and/or filtering of a signal generated by the driver or the transmit circuit.