Analytical Solution of Scattering by a 2D Dielectric Filled Crack in a Ground Plane Coated by a Dielectric Layer: TE Case

Authors

  • B. Ghalamkari Department of Electrical Engineering Amirkabir University of Technology, Tehran, 15914, Iran
  • A Tavakoli Department of Electrical Engineering 2 Institute of Communications Technology and Applied Electromagnetics Amirkabir University of Technology, Tehran, 15914, Iran
  • M. Dehmollaian Department of Electrical and Computer Engineering University of Tehran, Tehran, 14395-515, Iran

Keywords:

Plane wave scattering, 2D coated crack, dielectric layer, Kobayashi and Nomura method, Weber-Schafheitlin discontinuous integrals

Abstract

Analytical solution of scattering by a 2D loaded crack on a ground plane, coated by a dielectric layer for TE case is studied theoretically using Kobayashi and Nomura's (Kobayashi Potential) method. The geometry is divided into three regions whose fields are expressed in terms of Bessel eigenfunctions. The problem is reduced to a system of equations involving truncated summations with an infinite number of unknowns. Excitation coefficients are determined by applying the boundary conditions. By applying Weber- Schafheitlin discontinuous integrals, the infinite summations could efficiently be truncated with high numerical accuracy. For validation, in addition to convergence analysis, near-field magnetic current densities on the crack and the radar cross section (RCS) results are compared with those of Finite Element Method (FEM). Having the analytical method, the influence of the filling and the dielectric layer is investigated.

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Published

2021-11-12

How to Cite

[1]
B. . Ghalamkari, A. . Tavakoli, and M. . Dehmollaian, “Analytical Solution of Scattering by a 2D Dielectric Filled Crack in a Ground Plane Coated by a Dielectric Layer: TE Case”, ACES Journal, vol. 27, no. 11, pp. 887–896, Nov. 2021.

Issue

2012: Vol 27 Iss 11

Section

Articles