A method for signal modulation using pulse width modulators

摘要

The invention concerns a method for signal modulation of an input signal (S) using pulse width modulators (PWM1, PWM2), wherein the input signal (S) is modulated in said pulse width modulators (PWM1, PWM2) by means of reference signals (SR, SRPS) resulting in pulse width modulated signals with two levels (SPWM1, SPWM2), and at least one of fundamentals and harmonics of a first reference signal of said reference signals (SR) comprised in a first pulse width modulated signal of said pulse width modulated signals with two levels (SPWM1) at least partially superpose destructively with at least one of fundamentals and harmonics of a second reference signal of said reference signals (SRPS) comprised in a second pulse width modulated signal of said pulse width modulated signals with two levels (SPWM2), and a transmitter therefor.