Magnetic Line Source Diffraction by an Impedance Step

Author

Ayub, M. ; Ramzan, M. ; Mann, A.B.

Author_Institution

Dept. of Math., Quaid-i- Azam Univ., Islamabad

Volume

57

Issue

4

fYear

2009

fDate

4/1/2009 12:00:00 AM

Firstpage

1289

Lastpage

1293

Abstract

Diffraction of a magnetic line source by an impedance step joined by two half planes is studied in the case where the half planes and step are characterized by different surface impedances. The problem is solved using Wiener Hopf technique and Fourier transform. The scattered field in the far zone is determined by the method of steepest descent. Graphical results for the solution has also been presented. It is observed that if the source is shifted to a large distance these results differ from those of by a multiplicative factor to the part of the scattered field containing the effects of incident and reflected waves.

Keywords

Fourier transforms; electromagnetic wave diffraction; electromagnetic wave scattering; integral equations; Fourier transform; Wiener Hopf technique; field scattering; impedance step; incident wave; magnetic line source diffraction; multiplicative factor; reflected waves; surface impedance; Acoustic diffraction; Acoustic scattering; Acoustic waves; Electromagnetic diffraction; Electromagnetic scattering; Fourier transforms; Geometry; Surface impedance; Surface treatment; Surface waves; Far-field approximation; Green´s function; Wiener–Hopf theory; line source; saddle point method; scattering;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2009.2015851

Filename

4812223