Circuits and methods for cancelling nonlinear distortions in pulse width modulated sequences

摘要

A method of canceling nonlinear distortions in pulse width modulated signals includes receiving an input signal. A first signal that is the modulated input signal is generated. The first signal has quantized levels representing the input signal. A pulse width modulated (PWM) sequence that is representative of the first signal is generated. A second signal that is the PWM sequence mixed with a carrier signal is generated. An error signal is generated in response to the first signal and modeled from the second signal. The error signal is added to the input signal.

主权项

1. A method for canceling nonlinear distortions in pulse width modulated (PWM) sequences, the method comprising:
receiving an input signal; generating a first signal by modulating the input signal, the first signal having quantized levels representing the input signal; generating a pulse width modulated (PWM) sequence representative of the first signal; generating a second signal by mixing the PWM sequence with a carrier signal; generating an error signal in response to the first signal and modeled from the second signal; and adding the error signal to the input signal.