Analysis of End-Coupled Stripline Filter by Current Normal Mode Expansion Method

Kenichi USUI  Tetsuo ANADA  HSU Jui-Pang  

IEICE TRANSACTIONS (1976-1990)   Vol.E72   No.10   pp.1040-1042
Publication Date: 1989/10/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: Special Section LETTER (Special Issue on 1989 Autumn National Convention IEICE)
Category: Microwave Circuits

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An end-coupled stripline filter is analyzed by the current normal mode expansion method. It is shown that the frequency characteristics are well described with finite number of current normal modes which are existed in the frequency range of interest. This fact intimates the possibility of synthesizing the circuit by Foster-type equivalent circuit.