A FRONT-END RECEIVER SIGMA-DELTA MODULATOR

摘要

The present invention relates to a sigma-delta modulator, which is operative in different standard modes for processing communication signals of different communication standards. The modulator comprises a 1-bit quantizer and a multi-bit quantizer, and a switching mechanism for switching between said quantizers in dependence of the standard mode. The invention further relates to an A/D converter comprising such a modulator, a multi-standard RF receiver comprising such an A/D converter, and a method for signal processing of communication signals of different communication standards.