Design of H-infinity correction filters for cascaded sigma delta modulators

被引：0
|
作者：
Gani, MR [1 ]
机构：
[1] Univ London Kings Coll, Dept Elect Engn, London WC2R 2LS, England
来源：
Proceedings of the 46th IEEE International Midwest Symposium on Circuits & Systems, Vols 1-3 | 2003年
关键词：
D O I：
暂无
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 paper we propose a robust correction scheme to tackle the well known problem of analog mismatch errors encountered in cascaded sigma delta modulators. The problem is cast in an H-infinity setting and solved using standard robust control tools. Guaranteed worst case performance is obtained and implementation overhead is minimised. The approach is developed for the 1-1-1 cascaded architecture and results are provided for the slightly simpler 2-1 cascade scheme.
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页码：76 / 79
页数：4
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