Variable-structure compensation of delta-sigma modulators: Stability and performance

被引：12

作者：

Zourntos, T ^{[1
]}

Johns, DA ^{[1
]}

机构：

[1] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-FUNDAMENTAL THEORY AND APPLICATIONS | 2002年 / 49卷 / 01期

关键词：

analog; continuous-time filtering; delta-sigma modulation; electronics; integrated circuits; sliding-mode; stability; variable-structure control;

D O I：

10.1109/81.974873

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：

We develop a compensation method for continuous-time delta-sigma modulators valid for loop filters of arbitrary order. Our approach, based on variable-structure theory, accommodates multilevel quantization and dithering. Stability is rigorously proved under the assumption of infinite sampling rate and is accompanied by an analytic characterization of performance. A slight modification of the basic compensator provides a defence against parametric uncertainty through the use of variable-integrator damping.

引用

页码：41 / 53

页数：13

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