Digital Distortion-free PWM and Click Modulation

CHIERCHIE, FERNANDO; PAOLINI, EDUARDO E.

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

Año: 2018 vol. 65 p. 396 - 400

1549-7747

This brief note exhibits the relationship between the analog click modulator, which produces a binary PWM signal with separated baseband, and recently reported fully digital, baseband distortion-free PWM algorithms (BBDFPWM). We show that BBDFPWM not only is a discrete-time version of the click modulator, but also it can operate in real-time without any shortcoming of other implementations. The method can also be used for developing low distortion and efficient arbitrary signal generators. In this case, we show a procedure for the off-line computation of the duty-cycles of the PWM signal with zero distortion.