Full-wave analysis of coupling between combline resonators and its application to combline filters with canonical configurations

Author

El Sabbagh, Mahmoud ; Zaki, Kawthar A. ; Yao, Hui-Wen ; Yu, Ming

Author_Institution

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

Volume

49

Issue

12

fYear

2001

fDate

12/1/2001 12:00:00 AM

Firstpage

2384

Lastpage

2393

Abstract

Resonant frequencies and coupling coefficient between two combline cavities, in the presence of other cavities, are obtained accurately using the mode-matching technique. The effect of iris dimensions and position on the electric and magnetic coupling is rigorously investigated. The corresponding data for two isolated cavities are included for comparison. The adjacent and nonadjacent couplings are rigorously investigated for different configurations of three coupled cavities. A four-pole slot-coupled elliptic combline filter is designed

Keywords

cavity resonator filters; cavity resonators; comb filters; electromagnetic coupling; elliptic filters; mode matching; canonical configuration; combline cavity; combline resonator; coupling coefficient; electromagnetic coupling; four-pole slot-coupled elliptic combline filter; full-wave analysis; iris; mode matching; resonant frequency; Coupling circuits; Iris; Magnetic analysis; Magnetic separation; Resonator filters; Scattering; Symmetric matrices; Transmission line matrix methods; Waveguide discontinuities; Waveguide junctions;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.971625

Filename

971625