A new evanescent-mode filter for densely packaged waveguide applications

Author

Labay, V.A. ; Bornemann, J.

Author_Institution

Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada

fYear

1992

fDate

1-5 June 1992

Firstpage

901

Abstract

A novel evanescent-mode filter structure based on T-septum waveguide technology is presented for applications in extremely compact designs. The excellent characteristics of the T-septum waveguide are utilized to significantly reduce the resonator cutoff frequency compared with standard ridge waveguide designs. This allows the evanescent-mode guide to have a smaller cross-section, hence considerably reducing the overall length of the filter. The computer-aided design uses a full-wave mode-matching technique which takes into account higher-order mode coupling at all discontinuities involved. Design data are given for X- and Ka-bands. The method was verified by measurements. The manufactured 10-GHz prototype measured only 18.4 mm in length.<>

Keywords

microwave filters; passive filters; waveguide components; 10 GHz; Ka band design data; SHF; T-septum waveguide technology; X-band design data; computer-aided design; densely packaged waveguide applications; discontinuities; evanescent-mode filter; full-wave mode-matching; higher-order mode coupling; resonator cutoff frequency; Application software; Cutoff frequency; Electromagnetic waveguides; Electronics packaging; Laboratories; Length measurement; Microwave communication; Microwave filters; Prototypes; Resonator filters;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1992., IEEE MTT-S International

Conference_Location

Albuquerque, NM, USA

ISSN

0149-645X

Print_ISBN

0-7803-0611-2

Type

conf

DOI

10.1109/MWSYM.1992.188134

Filename

188134