Pulse width distortion cancellation of a switching mode amplifier for reduced second harmonic interference

摘要

A switching-mode power amplifier includes a driver circuit having an input for receiving a radio frequency (RF) signal, an output for outputting a digital output signal, and a bias port for receiving a bias signal, and a bias circuit having a first input coupled to the output of the driver circuit for receiving the digital output signal, a second input coupled to the input of the driver circuit for receiving the RF signal, and an output coupled to the bias port of the driver circuit for providing the bias signal to the driver circuit.