Analysis of overmoded waveguides using the finite-difference time domain method

Author

Roper, D.H. ; Baird, J.M.

Author_Institution

Dept. of Electr. Eng., Utah Univ., Salt Lake City, UT, USA

fYear

1992

fDate

1-5 June 1992

Firstpage

401

Abstract

Presents techniques developed for analyzing scattering and coupling in overmoded waveguides using the finite-difference time-domain (FDTD) method. Sources and adsorbing boundary conditions for waveguide modes are examined. The stair-step approximation to round surfaces is considered, and a technique for finding the effective radius of a cylindrical model is described. A numerical example of scattering from a step diameter transition in circular waveguides is presented and compared to the analytic solution.<>

Keywords

circular waveguides; electromagnetic wave scattering; finite difference time-domain analysis; waveguide theory; adsorbing boundary conditions; circular waveguides; coupling; cylindrical model; finite-difference time domain method; overmoded waveguides; round surfaces; scattering; stair-step approximation; step diameter transition; waveguide modes; Boundary conditions; Electromagnetic scattering; Electromagnetic waveguides; Finite difference methods; Lattices; Planar waveguides; Rectangular waveguides; Time domain analysis; Waveguide theory; Waveguide transitions;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1992., IEEE MTT-S International

Conference_Location

Albuquerque, NM, USA

ISSN

0149-645X

Print_ISBN

0-7803-0611-2

Type

conf

DOI

10.1109/MWSYM.1992.187997

Filename

187997