Backscattering From a Soft–Hard Strip: Primary Edge Waves Approximations

Author

Hacivelioglu, Feray ; Sevgi, Levent ; Ufimtsev, P. Ya

Author_Institution

Math. Dept., Gebze Inst. of Technol., Kocaeli, Turkey

Volume

12

fYear

2013

fDate

2013

Firstpage

249

Lastpage

252

Abstract

High-frequency approximation is constructed for backscattering from a strip with one face soft and the other face hard (i.e., with Dirichlet and Neumann boundary conditions, respectively). This approximation is based on the solution of the canonical problem for a wedge with the same boundary conditions. Its exact solution belongs to Malyuzhinetz (Ann. Phys., vol. 6, no. 1-2, pp. 107-112, 1960). Here, we utilize its approximations presented in Ufimtsev´s work (IEEE Antennas Propag. Mag., Dec. 2013) and derive simple asymptotics for backscattering. Only primary edge waves are taken into account. The influence of the secondary diffraction is estimated asymptotically to validate this approach. The results are compared to the physical optics (PO) and Physical Theory of Diffraction (PTD) approximations.

Keywords

approximation theory; backscatter; electromagnetic wave diffraction; PO; PTD approximations; backscattering; boundary conditions; high-frequency approximation; physical optics; physical theory of diffraction approximation; primary edge wave approximations; secondary diffraction; soft-hard strip; Approximation methods; Backscatter; Boundary conditions; Diffraction; Face; Scattering; Strips; Backscattering; Physical Theory of Diffraction (PTD); diffraction; edge waves; hard boundary conditions; impedance; impedance boundary conditions; physical optics (PO); soft boundary conditions;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2013.2247734

Filename

6464507