BAND-PASS SIGMA-DELTA MODULATOR AND USE OF SIGMA-DELTA MODULATOR FOR CONVERTING, DETECTING AND PRODUCING SIGNALS

摘要

The invention concerns a sigma-delta modulator comprising at least a resonator (110a, 110b), a converter (120) for converting an analog signal from the resonator into a digital signal with temporal information, and a feedback loop connecting an output of the converter to an excitation input of the resonator. The invention is characterised in that at least one resonator of the modulator is a resonator selected among the group comprising mechanical, acoustic, electromechanical, electrostatic, optical and chemical resonators. The invention is applicable to analog-to-digital conversion, detection and generation of signals.