Title :
Nyquist criterion based design of continuous time /spl Sigma//spl Delta/ modulators
Author :
De Maeyer, J. ; Rombouts, P. ; Weyten, L.
Author_Institution :
Dept. of Electron. & Inf. Syst., Ghent Univ.
Abstract :
In this paper we propose a way to design continuous time SigmaDelta modulators. The method is based on the Nyquist stability criterion. Based on this criterion we propose to use the vector gain margin as a robust stability margin. Using this margin as a design criterion we design a robustly stable modulator. Finally, we also show how this margin can be used to evaluate the relative stability of a designed modulator
Keywords :
Nyquist criterion; circuit stability; continuous time systems; sigma-delta modulation; Nyquist stability criterion; continuous time SigmaDelta modulators; continuous time modulators; design criterion; relative stability; robust stability margin; vector gain margin; Delay; Feedback; Filters; Information systems; Pulse modulation; Pulse shaping methods; Robust stability; Robustness; Sampling methods; Stability criteria;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1693131
