Manipulation of Backscattering From a Dielectric Cylinder of Triangular Cross-Section Using the Interplay of GO-Like Ray Effects and Resonances

Author

Sukharevsky, Ilya O. ; Nosich, Alexander I. ; Altintas, Ayhan

Author_Institution

Commun. & Spectrum Manage. Res. Center (ISYAM), Bilkent Univ., Ankara, Turkey

Volume

63

Issue

5

fYear

2015

fDate

May-15

Firstpage

2162

Lastpage

2169

Abstract

A triangular dielectric cylinder (dielectric prism) of the size, in cross-section, comparable to or moderately larger than the wavelength is a scatterer, which blends together two different types of electromagnetic behavior: geometrical optics (GO) and resonance. As shown in this paper, the first is responsible, for instance, for enhanced reflection from an isosceles 90° prism, if illuminated from the base. The second is responsible for the peaks in the total scattering and absorption cross-sections (ACSs) at the natural-mode frequencies. The numerical analysis is performed by solving the well-conditioned Muller-type boundary integral equation (IE) discretized using an algorithm with controlled accuracy.

Keywords

absorption; backscatter; boundary integral equations; geometrical optics; radar cross-sections; ACS; GO-like ray effects; Muller-type boundary integral equation; absorption cross-sections; backscattering; dielectric prism; electromagnetic behavior; geometrical optics; isosceles prism; triangular cross-section; triangular dielectric cylinder; Convergence; Dielectrics; Eigenvalues and eigenfunctions; Kernel; Resonant frequency; Scattering; Strips; Dielectric prism; Muller integral equation; Muller integral equation (IE); natural resonances; radar cross-section; radar cross-section (RCS); scattering;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2015.2404338

Filename

7042744