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Keywords

Optics; Boundary value problems; Dielectric loaded waveguides; Electromagnetic scattering; Green function; Waveguide theory

Abstract

A rigorous analysis of the problem of scattering from an incident E-polarised wave on a dielectric-loaded perfectly conducting strip is presented for a line source and plane wave excitations. The vector Green's theorem is used to derive an integral equation for the unknown electric and magnetic field components. The singular component of the magnetic field is then cancelled out by properly choosing the auxiliary fields and boundary conditions. The unknown expansion coefficients of the scattered electric field are determined by numerically solving an infinite set of simultaneous linear equations after truncation. The accuracy of the proposed solution is verified for the loaded and unloaded strip by comparing the resulting values of the scattered field with those based on the method of moments. For the loaded strip, the dependence of the scattered field as well as the scattering cross-sections on the strip width, dielectric constant and angle of incident wave is investigated and presented for plane wave incidence.

Journal Title

Iee Proceedings-H Microwaves Antennas and Propagation

Volume

136

Issue/Number

3

Publication Date

1-1-1989

Document Type

Article

Language

English

First Page

185

Last Page

190

WOS Identifier

WOS:A1989U821600001

ISSN

0950-107X

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