Title :
Stability analysis of a sigma delta modulator
Author :
Zhang, J. ; Brennan, P.V. ; Jiang, D. ; Vinogradova, E. ; Smith, P.D.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London, UK
Abstract :
This paper illustrates how an adaptive iterative method may be used to verify large signal input stability of a third-order sigma delta modulator across a range of DC inputs, once the initial design parameters the system have been determined using small signal nonlinear stability analysis. This approach is potentially useful to design and optimise stored sigma delta sequences to the modulus controller for a fractional-N synthesiser.
Keywords :
circuit optimisation; circuit stability; frequency synthesizers; iterative methods; sigma-delta modulation; adaptive iterative method; design optimisation; fractional-N synthesiser; large-signal stability; modulus controller; sigma-delta modulator; small-signal nonlinear stability analysis; Delta modulation; Delta-sigma modulation; Noise shaping; Predictive models; Quantization; Signal analysis; Signal design; Signal synthesis; Stability analysis; Uncertainty;
Conference_Titel :
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
Print_ISBN :
0-7803-7761-3
DOI :
10.1109/ISCAS.2003.1205725
