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Addressing transient errors in passive macromodels of distributed transmission-line networks
Dounavis, A.; Achar, R.; Nakhla, M.S.;
Microwave Theory and Techniques, IEEE Transactions on
Volume 50,
Issue 12,
Dec. 2002
Page(s):2759
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2768
Abstract:
Recently, several time-domain passive macromodeling algorithms were proposed for distributed transmission-line networks. most or them employ some kind of approximation in the frequency domain to match the response up to a maximum frequency of interest and the behavior after the highest frequency is generally not considered. This can cause significant errors in transient responses (especially in the early-time period). In order to address this difficulty, we will present a new algorithm to reduce high-frequency errors in time-domain macromodels, while preserving passivity. The proposed algorithm is very useful in eliminating spurious ripples in the flat delay portion of transient responses of distributed transmission-line networks without needing to increase the order of approximation.
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