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
收藏
页码：41 / 53
页数：13
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