An approach for stability analysis of a single-bit high-order digital sigma-delta modulator

被引：3

作者：

Sadik, Amin Z.

Hussain, Zahir M. ^{[1
]}

Yu, Xinghuo

O'Shea, Peter

机构：

[1] RMIT Univ, Sch Elect & Comp Engn, Melbourne, Vic, Australia

[2] Queensland Univ Technol, Sch Engn Syst, Brisbane, Qld, Australia

来源：

DIGITAL SIGNAL PROCESSING | 2007年 / 17卷 / 06期

基金：

澳大利亚研究理事会;

关键词：

stability; single-bit; circle map;

D O I：

10.1016/j.dsp.2006.11.007

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this work we considered the stability of a single-bit high-order sigma-delta modulator under dc input. A new approach for stability analysis is proposed. A nonlinear circle map is suggested to model the dynamics of the modulator. An analogy between the dynamics of the sigma-delta modulator and the sinusoidal digital phase-locked loop (DPLL) is studied and an approximate fixed point solution is presented with stability criteria. Suggestions for designing stabilized high-order systems are presented. (c) 2006 Elsevier Inc. All rights reserved.

引用

页码：1040 / 1054

页数：15

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