Relationship between group delay and stored energy in microwave filters

被引：35

作者：

Ernst, C ^{[1
]}

Postoyalko, V ^{[1
]}

Khan, NG ^{[1
]}

机构：

[1] Univ Leeds, Sch Elect & Elect Engn, Leeds LS2 9JT, W Yorkshire, England

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2001年 / 49卷 / 01期

关键词：

group delay; lossless two-ports; microwave filters; power-handling capability; stored energy;

D O I：

10.1109/22.900007

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, an expression for the time average stored energy (t.a.s.e.) in a passive lossless two-port is derived in terms of its scattering parameters. In particular, it is shown that the t.a.s.e. in a passive lossless reciprocal symmetrical or antimetrical two-port is proportional to the group delay. One implication of this result is that the t.a.s.e., which is linked to the power-handling capability in many passive filters used in practice, is proportional to the group delay of the filter. This rigorous derivation is based on a variational theorem, which has been used in the past to prove energy storage results for passive lossless one-ports and periodic two-ports.

引用

页码：192 / 196

页数：5

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