On the behaviour of passive guard-rings in lightly doped substrates

TitleOn the behaviour of passive guard-rings in lightly doped substrates
Publication TypeConference Paper
Year of Publication2006
AuthorsHekmat, M., S. Mirabbasi, and M. Hashemi
Conference NameCircuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Pagination4 pp. -1282
Keywordsintegrated circuit modelling, integrated circuit noise, lightly doped substrates, n-well guard rings, passive guard-rings, substrates
Abstract

The effectiveness of passive guard-rings in high-frequency applications is studied using a simple approach. The results of this study reveal that while the performance of p+ guard-rings deteriorate as the frequency of operation increases, the n-well guard rings may exhibit the opposite trend. Furthermore, these results predict that n-well guard-rings can even act as p+ guard-rings at very high frequencies. The effect of other guard-ring parameters, such as placement and shape, on its noise suppression capability is also investigated

URLhttp://dx.doi.org/10.1109/ISCAS.2006.1692826
DOI10.1109/ISCAS.2006.1692826

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