Modal block-LU-decomposition technique for the efficient CAD of ridged waveguide filters

Author

Beyer, R. ; Arndt, F. ; Hauth, W.

Author_Institution

Microwave Dept., Bremen Univ., Germany

Volume

3

fYear

1997

fDate

8-13 June 1997

Firstpage

1235

Abstract

A mode-matching/block-LU-decomposition (MMLU) technique is presented for the fast calculation of the modal S-parameters of and the fields in waveguide components composed of step discontinuities and homogeneous sections. The MMLU approach leads to a numerically efficient block-tridiagonal matrix structure. Arbitrary cross-sections are included by the combination with the fast and flexible 2D FE method. The efficiency of the method is demonstrated at the CAD of advanced broadband higher-order mode suppression ridged waveguide filters. Excellent agreement with measurements verifies the theory.

Keywords

CAD; S-parameters; finite element analysis; matrix decomposition; mode matching; ridge waveguides; waveguide discontinuities; waveguide filters; waveguide theory; 2D FE method; CAD; MMLU; block-tridiagonal matrix; broadband ridged waveguide filter; higher-order mode suppression; modal S-parameters; mode-matching/block-LU-decomposition; numerical efficiency; step discontinuities; Equations; Iron; Microwave filters; Microwave theory and techniques; Mode matching methods; Scattering parameters; Telecommunications; Transmission line matrix methods; Voltage; Waveguide components;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1997., IEEE MTT-S International

Conference_Location

Denver, CO, USA

ISSN

0149-645X

Print_ISBN

0-7803-3814-6

Type

conf

DOI

10.1109/MWSYM.1997.596550

Filename

596550