Title :
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
fDate :
12/1/1988 12:00:00 AM
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;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
