Application of modal analysis to a waveguide-cavity junction formed by an iris obstacle

Author

Kooi, P.S. ; Leong, M.S. ; Thng, H.

Author_Institution

National University of Singapore, Department of Electrical Engineering, Singapore, Singapore

Volume

131

Issue

1

fYear

1984

fDate

2/1/1984 12:00:00 AM

Firstpage

35

Lastpage

37

Abstract

This paper describes an application of the modal-analysis technique for studying the coupling of a circular waveguide to a cylindrical cavity via an infinitely thin iris obstacle containing a central circular aperture. It confirms that, for this type of coupling problem, for optimal convergence the equality of the ratios m : q : n and RA : ra : RB needs to be taken, where m, q and n are, respectively, the number of waveguide modes, aperture functions and cavity modes, and RA, ra and RB are the corresponding radial dimensions. The results obtained are compared with those derived from a transmission-line model and experiment.

Keywords

cavity resonators; circular waveguides; waveguide couplers; waveguide theory; aperture functions; cavity modes; circular waveguide; coupling; cylindrical cavity; iris obstacle; modal analysis; optimal convergence; transmission-line model; waveguide modes; waveguide-cavity junction;

fLanguage

English

Journal_Title

Microwaves, Optics and Antennas, IEE Proceedings H

Publisher

iet

ISSN

0143-7097

Type

jour

DOI

10.1049/ip-h-1.1984.0007

Filename

4646021