A circuit model of probes in dual-mode cavities

Author

Zaki, Kawthar A. ; Chen, Chunming ; Atia, Ali E.

Author_Institution

Dept. of Electr. Eng., Maryland Univ., College Park, MD, USA

Volume

36

Issue

12

fYear

1988

fDate

12/1/1988 12:00:00 AM

Firstpage

1740

Lastpage

1746

Abstract

An accurate model of coaxial probes used as input and output ports in dual-mode cavities (either air-filled or dielectric-loaded) is presented. The model precisely predicts such empirically observed phenomena as limited out-of-band isolation, generation of extra transmission zeros, and asymmetric responses. The model parameters can be determined from simple measured data. It is shown how the model can be used in the analysis and synthesis of canonical dual-mode filters. Experimental verification of the model for several configurations showed excellent agreement with theory

Keywords

cavity resonators; equivalent circuits; losses; microwave filters; passive filters; probes; air-filled; asymmetric responses; canonical dual-mode filters; circuit model; coaxial probes; dielectric-loaded; dual-mode cavities; extra transmission zeros; input ports; limited out-of-band isolation; model parameters; output ports; zeros generation; Coaxial components; Coupling circuits; Dielectrics; Fasteners; Filtering theory; Frequency; Predictive models; Probes; Resonance; Resonator filters;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.17408

Filename

17408