Full-wave analysis of cross-aperture waveguide couplers

Author

Jiang, Zhihua ; Shen, Zhongxiang

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore

Volume

12

Issue

7

fYear

2002

fDate

7/1/2002 12:00:00 AM

Firstpage

267

Lastpage

269

Abstract

This paper presents a full-wave analysis of coupling between rectangular waveguides through a cross-aperture. The rigorous mode-matching method is used to derive the generalized scattering matrix of a waveguide T-junction having a crossed waveguide as the side arm. Two three-port T-junctions are then cascaded together to form a number of cross-aperture couplers. The analysis method can handle both broad-wall and narrow-wall, both parallel and crossed coupling structures. Our numerical results for a variety of couplers are in good agreement with those obtained by Ansoft´s HFSS.

Keywords

S-matrix theory; S-parameters; directional couplers; mode matching; rectangular waveguides; waveguide couplers; Ansoft HFSS; broad-wall coupling structures; cross-aperture directional coupler; cross-aperture waveguide couplers; crossed waveguide side arm; full-wave analysis; generalized scattering matrix; narrow-wall coupling structures; numerical results; parallel coupling structures; rectangular waveguides; rigorous mode-matching method; scattering parameters; three-port T-junctions; waveguide T-junction; Apertures; Directional couplers; Electromagnetic fields; Electromagnetic scattering; Electromagnetic waveguides; Geometry; Mode matching methods; Rectangular waveguides; Region 3; Transmission line matrix methods;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2002.801128

Filename

1016819