CAD of T-septum waveguide evanescent-mode filters

Author

Labay, Vladimir A. ; Bornemann, Jens

Author_Institution

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

Volume

41

Issue

4

fYear

1993

fDate

4/1/1993 12:00:00 AM

Firstpage

731

Lastpage

733

Abstract

A mode-matching-based design for an evanescent-mode waveguide filters with T-septum shaped metal inserts is presented. Owing to the wideband characteristics of the T-septum waveguide, the proposed design constitutes a significant improvement over common evanescent-mode filters with respect to both size reduction and stopband behavior. The theoretical approach is verified for the example of a three-resonator 8.8-GHz filter prototype of less than 3/4-in length. The second passband is beyond 27 GHz. Since the design procedure takes higher-order mode interactions into account, good agreement between theory and experiment is obtained over the entire measurement range between 8.2 and 40 GHz

Keywords

CAD; electronic engineering computing; microwave filters; passive filters; resonators; waveguide components; 8.2 to 40 GHz; CAD; SHF; T-septum waveguide; computer aided design; evanescent-mode filters; higher-order mode interactions; mode-matching-based design; shaped metal inserts; size reduction; stopband behavior; wideband characteristics; Cutoff frequency; Design automation; Fasteners; Light scattering; Passband; Prototypes; Rectangular waveguides; Resonator filters; Transmission line matrix methods; Wideband;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.231675

Filename

231675