A method of moments analysis and a finite-difference time-domain analysis of a probe-sleeve fed rectangular waveguide cavity

Author

Jarem, John M.

Author_Institution

Dept. of Electr. & Comput. Eng., Alabama Univ., Huntsville, AL, USA

Volume

39

Issue

3

fYear

1991

fDate

3/1/1991 12:00:00 AM

Firstpage

444

Lastpage

451

Abstract

A multifilament method of moments (MOM) analysis and a finite-difference time-domain (FE-TD) analysis are used to numerically calculate the input impedance of a probe-sleeve fed rectangular waveguide which has been short-circuited on one side. The input impedance of the system is determined by using the above methods for several probe-sleeve configurations, and reasonable agreement between the two methods for the cases studied is found. An MOM Green´s function formulation which is based on scattering superposition and which allows the input impedance of a probe-sleeve feed to be calculated when the waveguide is terminated in a given load is derived. The MOM results and FD-TD numerical results are compared for this loaded waveguide input impedance case, and reasonable agreement between the methods is found. A comparison of theory and experiment is given for when the waveguide is terminated in a ground plane aperture

Keywords

difference equations; electric impedance; probes; rectangular waveguides; time-domain analysis; waveguide theory; Green´s function formulation; finite-difference time-domain analysis; input impedance; loaded waveguide; moments method analysis; multifilament method of moments; probe-sleeve fed; rectangular waveguide cavity; scattering superposition; Feeds; Finite difference methods; Green´s function methods; Impedance; Loaded waveguides; Message-oriented middleware; Moment methods; Rectangular waveguides; Scattering; Time domain analysis;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.75286

Filename

75286