Patent ID: 8350635

Claim:
A method of suppressing high-frequency perturbations in a pulse-width modulation comprising: pulse-width modulating a first electronic signal by superposing a first carrier signal having a carrier frequency and an input signal with a first modulation frequency to obtain a first pulse-width modulated signal; pulse-width modulating a second electronic signal by superposing a second carrier signal having the carrier frequency with another input signal with a second modulation frequency, where the second carrier signal is phase shifted with respect to the first carrier signal to obtain a second pulse-width modulated signal; filtering the first pulse-width modulated signal to obtain a first perturbed filtered signal and filtering the second pulse-width modulated signal to obtain a second perturbed filtered signal; and combining the first perturbed filtered signal and the second perturbed filtered signal using a high-pass filter, the high-pass filter is configured to combine the first perturbed filtered signal and the second perturbed filtered signal to obtain an output signal.