Dual post cavity waveguide filters

Author

Le-Ngoc, Son

Author_Institution

Fac. of Eng. & Appl. Sci., Memorial Univ. of Newfoundland, St. John´´s, Nfld., Canada

Volume

36

Issue

1

fYear

1990

fDate

2/1/1990 12:00:00 AM

Firstpage

37

Lastpage

42

Abstract

A step-by-step design procedure is given for a direct coupled cavity waveguide filter. First, the amplitude response and group delay are analyzed based on the Chebyshev approximation and the realizable unloaded Q, for a given specification. After having obtained the optimal parameters, the two-post filter is realized by using two universal polynomials. One is used to calculate the post separation and the other is for the cavity length. The two polynomials are found from measured data. This design approach has been effectively used up to 20 GHz, and it can be extended to millimeter waves

Keywords

cavity resonators; microwave filters; waveguide components; Chebyshev approximation; amplitude response; coupled cavity waveguide filter; design procedure; group delay; microwave filter; realizable unloaded Q; two-post filter; universal polynomials; Chebyshev approximation; Delay; Fasteners; Filtering theory; Frequency; Insertion loss; Microwave filters; Polynomials; Transfer functions; Waveguide theory;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.46608

Filename

46608