Relationship between group delay and stored energy in microwave filters

被引:36
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
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
收藏
页码:192 / 196
页数:5
相关论文
共 9 条
[1]  
[Anonymous], 1976, THEORY ELECT FILTERS
[2]  
Collin R., 1991, FIELD THEORY GUIDED
[3]  
Collin R.E., 2001, Foundations for Microwave Engineering, V2nd ed.
[4]  
Ernst C, 1999, IEEE MTT-S, P1339, DOI 10.1109/MWSYM.1999.779635
[5]  
FEYNMAN R, 1964, FEYNMAN LECT PHYSICS, V2
[6]  
Matthaei L.Y. E. M. T. J. L., 1980, Microwave Filters, Impedance-Matching Networks, and Coupling Structures
[7]  
MONTGOMERY CG, 1948, PRINCIPLES MICROWAVE
[8]  
SCHWINGER J, 1948, NOTES LECT J SCHWING
[9]  
Young L., 1960, IRE T MICROWAVE THEO, V8, P612