Bandpass sigma-delta modulator and uses of the sigma delta modulator for conversion, detection and production of signals

摘要

A sigma-delta modulator comprising:at least one resonator (100a, 110b),a converter (120) to convert an analogue signal from the resonator into a digital signal with time information, anda feedback loop connecting an output of the converter to an excitation input of the resonator.;According to the invention, at least one resonator in the modulator is chosen from among the group comprising mechanical, acoustic, electromechanical, electrostatic, optical and chemical resonators. Application to analogue-digital conversion, signal detection and signal generation.