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Near-field scattering from PEC wedge excited by electric dipole in lossy medium

Hülya Öztürk (Department of Mathematics, Gebze Technical University, Gebze, Turkey)
Korkut Yegin (Ege University, Izmir, Turkey)

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering

ISSN: 0332-1649

Article publication date: 28 May 2021

Issue publication date: 20 August 2021

177

Abstract

Purpose

The purpose of this paper is to derive the dyadic representations of Green’s function in lossy medium because of the electric current dipole source radiating in close proximity of a PEC wedge and to reveal the effect of conductivity on the scattered electric field.

Design/methodology/approach

By using the scalarization procedure, the paraxial fields are obtained first and then scalar Green’s functions are used to derive asymptotic forms of the dyadic Green’s functions. The problem is also analyzed by the image theory and analytical derivations are compared. However, analytically calculated results are validated with FEKO, a commercially available numerical electromagnetic field solver.

Findings

The results indicate that excellent agreement is observed between analytical and numerical results. Moreover, it is found that the presence of conductivity introduces a reduction in scattered electric fields.

Originality/value

Asymptotically derived forms presented in this study can be used to calculate field distributions in the paraxial region of a wedge in a lossy medium.

Keywords

Acknowledgements

This work was supported by TÜBİTAK (The Scientific and Technological Research Council of TURKEY) under BİDEB postdoctoral scholarship program.

Citation

Öztürk, H. and Yegin, K. (2021), "Near-field scattering from PEC wedge excited by electric dipole in lossy medium", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 40 No. 3, pp. 427-440. https://doi.org/10.1108/COMPEL-03-2020-0105

Publisher

:

Emerald Publishing Limited

Copyright © 2021, Emerald Publishing Limited

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