Improvement of the numerical solution of dielectric bodies with high permittivity

Author

Kishk, Ahmed A. ; Shafai, Lotfollah

Author_Institution

Dept. of Electr. Eng., Mississippi Univ., University, MS, USA

Volume

37

Issue

11

fYear

1989

fDate

11/1/1989 12:00:00 AM

Firstpage

1486

Lastpage

1490

Abstract

A method for improving the accuracy of the numerical solution of dielectric bodies is presented. Its utilization makes the matrix size independent of the relative dielectric constant and reduces its size. It also improves the accuracy of the solution of the Muller formulation when the dielectric constant is high. The root-mean-square (RMS) errors are calculated for dielectric spheres by comparing the numerical solution with the exact solution using Mei series. The magnitude and phase of the surface current distributions are presented. The bistatic radar cross sections of the sphere and finite cylinder, obtained by different formulations, are presented

Keywords

electromagnetic wave scattering; integral equations; permittivity; bistatic radar cross sections; dielectric bodies; electromagnetic wave scattering; high permittivity; matrix size; numerical solution; relative dielectric constant; surface current distributions; Antennas and propagation; Conductivity; Dielectric constant; Impedance; Integral equations; Moment methods; Notice of Violation; Permittivity; Radar scattering; Reflectivity;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.43570

Filename

43570