Dual-mode conductor-loaded cavity filters

Author

Wang, Chi ; Zaki, Kawthar A. ; Atia, Ali E.

Author_Institution

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

Volume

45

Issue

8

fYear

1997

fDate

8/1/1997 12:00:00 AM

Firstpage

1240

Lastpage

1246

Abstract

A new class of dual-mode filters consisting of cylindrical-waveguide cavities loaded with perfect conducting cylindrical disks is presented. Resonant frequencies, fields, and the unloaded Q of the resonator are rigorously analyzed by mode-matching techniques. A complete set of data for filter design is given. The results show that the resonator has high unloaded and and good spurious performance. The accuracy of the computed results are confirmed by comparison with the experimental data. An eight-pole elliptic-function filter for PCS applications was designed, constructed, and tested; excellent frequency response of the filter with wide spurious-free performance was obtained, which verifies the theory

Keywords

Q-factor; UHF filters; cavity resonators; circular waveguides; elliptic filters; frequency response; microwave filters; mode matching; passive filters; resonator filters; waveguide filters; PCS applications; conductor-loaded cavity filters; cylindrical-waveguide cavities; dual-mode filters; eight-pole elliptic-function filter; fields; filter design; frequency response; mode-matching techniques; perfect conducting cylindrical disks; resonant frequencies; unloaded Q; Dielectric constant; Dielectric losses; Filtering theory; Frequency response; Insertion loss; Low pass filters; Personal communication networks; Resonant frequency; Resonator filters; Superconducting filters;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.618413

Filename

618413