Title :
A new S-domain approach for designing continuous-time ΣΔ converters
Author :
Degouy, Jean-Luc ; Bénabès, Philippe ; Flouzat, Christophe ; Hodé, Jean-Michel ; Kielbasa, Richard
Author_Institution :
THALES Airborne Syst., Elancourt, France
Abstract :
Usual discrete-time analysis and synthesis of continuous-time band-pass ΣΔ modulators lead to loop filter responses which are not well suited to continuous-time application. In order to overcome this intrinsic difficulty and obtain more conventional filter responses, we propose a new and completely different approach. Based on a fully continuous-time domain analysis this method gives a comprehensive interpretation of the behavior of a multi-bit ΣΔ modulator loop
Keywords :
poles and zeros; sigma-delta modulation; time-domain analysis; S-domain approach; band-pass ΣΔ modulators; continuous-time ΣΔ converters; fully continuous-time domain analysis; loop filter responses; multi-bit ΣΔ modulator loop; Additive white noise; Attenuation; Band pass filters; Delay effects; Feedback control; Frequency; Noise generators; Quantization; Sampling methods; Stability;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2001. IMTC 2001. Proceedings of the 18th IEEE
Conference_Location :
Budapest
Print_ISBN :
0-7803-6646-8
DOI :
10.1109/IMTC.2001.928178
