Narrow wall axial-slot-coupled T junction between rectangular and circular waveguides

Author

Das, B.N. ; Rao, P. V D Somasekhar ; Chakraborty, Ajoy

Author_Institution

Dept. of Electron. & Electr. Commun. Eng., Indian Inst. of Technol., Kharagpur, India

Volume

37

Issue

10

fYear

1989

fDate

10/1/1989 12:00:00 AM

Firstpage

1590

Lastpage

1596

Abstract

An analysis is presented of a T junction between rectangular and circular waveguides coupled through a long axial slot in the narrow wall of the rectangular waveguide. A moment method with entire orthogonal basis functions is used for deriving expressions for the elements of the scattering matrix. The effect of the wall thickness is taken into account by treating the coupling slot as a short section of a rectangular waveguide and matching the boundary conditions at the interfaces. The conditions satisfied by the scattering matrix of the junction are verified. A comparison between theoretical and experimental results on variation of coupling with frequency is presented

Keywords

S-matrix theory; circular waveguides; rectangular waveguides; waveguide couplers; waveguide theory; T junction; axial-slot-coupled; boundary conditions; circular waveguides; moment method; narrow wall coupling slot; orthogonal basis functions; rectangular waveguide; scattering matrix; wall thickness; Apertures; Boundary conditions; Feeds; Frequency; Integral equations; Moment methods; Rectangular waveguides; Scattering; Transmission line matrix methods; Waveguide junctions;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.41006

Filename

41006