HIGH EFFICIENCY GATE DRIVER FOR WIRELESS POWER TRANSMISSION

摘要

A wireless transmitter is described herein that provides power wirelessly to an apparatus with high efficiency. For example, the wireless power transmitter may include a class E amplifier that is used as a gate driver for a main power amplifier. This advantageously enables power to be transmitted wirelessly with a 100% theoretical power efficiency and with minimal power loss. Furthermore, electromagnetic interference (EMI) issues are reduced because only low orders of harmonics are applied to the gate of the main power amplifier. A system that incorporates such a wireless transmitter and methods of operating the same are also described herein.

主权项

1. An apparatus, comprising:
a gate driver configured to convert a first oscillating signal to a second oscillating signal, the first oscillating signal being a square wave signal and the second oscillating signal being a sinusoidal wave signal; and a power amplifier comprising at least a gate terminal, wherein a signal based on the second oscillating signal is coupled to the gate terminal of the power amplifier.