Theory for the Design of a Filter Having One Cross Coupling Path to Realize Transmission Zeros

Zhewang MA  Toshiyuki ASANO  Yoshio KOBAYASHI  

IEICE TRANSACTIONS on Electronics   Vol.E86-C   No.8   pp.1690-1698
Publication Date: 2003/08/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
filter,  transmission zero,  cross coupling,  

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A general circuit model of a filter having one cross coupling path is analyzed, and a new theory is developed for the design of a filter with transmission zeros in its stopband. By using the derived formulas, the reactance element values in the cross coupling path are determined readily. The transmission zeros can thus be assigned at desired frequencies. Various design examples are provided, together with simulated results, which validate the proposed theory.