Scattering from a cavity-backed slit in a ground plant-TE case

Author

Jeng, Shyh Kang

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

38

Issue

10

fYear

1990

fDate

10/1/1990 12:00:00 AM

Firstpage

1523

Lastpage

1529

Abstract

Two-dimensional transverse electric wave scattering from a cavity-backed slit in a ground plane is analyzed by R.F. Harrington and J.R. Mautz´s (1976) generalized network formulation. The admittance matrix of the cavity or arbitrary shape and medium is obtained by the finite-element method. A variational equation for the cavity problem is established and then discretized to a matrix equation. An efficient algorithm using the modified frontal-solution algorithm is developed to solve the matrix equation. The solution is manipulated to get the admittance matrix of the cavity. The computed admittance matrix is added to the radiation admittance matrix of the equivalent magnetic current on a ground plane and is used to solve for the equivalent magnetic current on the slit. Numerical results for trapezoidal and coated rectangular cavities are included

Keywords

electric admittance; electromagnetic wave scattering; finite element analysis; matrix algebra; variational techniques; 2D TE wave scattering; admittance matrix; cavity-backed slit; coated rectangular cavities; equivalent magnetic current; finite-element method; ground plane; matrix equation; modified frontal-solution algorithm; transverse electric wave scattering; trapezoidal cavities; variational equation; Admittance; Apertures; Computer aided software engineering; Equations; Finite difference methods; Finite element methods; Frequency domain analysis; Intelligent networks; Scattering; Tellurium;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.59763

Filename

59763