High-frequency scattering by a conducting circular cylinder coated with a lossy dielectric of nonuniform thickness

Author

Tanyer, S. Gökhun ; Olsen, Robert G.

Author_Institution

Dept. of Electr. & Electron. Eng., Baskent Univ., Ankara, Turkey

Volume

45

Issue

4

fYear

1997

fDate

4/1/1997 12:00:00 AM

Firstpage

689

Lastpage

697

Abstract

A closed-form expression for the field produced by a plane wave incident on an infinitely long conducting cylinder, coated with a lossy dielectric of nonuniform thickness, is obtained using perturbation theory. This approximate series solution is later evaluated asymptotically for electrically large cylinder sizes. The scattered fields are interpreted using geometric optics and creeping waves. The fields are calculated using the exact series, the approximate perturbation series, and the high-frequency asymptotic solutions, and compared for different angles of incidence

Keywords

approximation theory; electromagnetic fields; electromagnetic wave scattering; geometrical optics; perturbation techniques; series (mathematics); HF scattering; angles of incidence; approximate perturbation series; approximate series solution; closed-form expression; coated cylinder; conducting circular cylinder; creeping waves; electrically large cylinder sizes; exact series; geometric optics; high-frequency asymptotic solutions; infinitely long conducting cylinder; lossy dielectric; nonuniform thickness; perturbation theory; plane wave scattering; scattered fields; Biomedical optical imaging; Closed-form solution; Coatings; Dielectric losses; Electromagnetic scattering; Engine cylinders; Geometrical optics; Helium; Optical losses; Optical scattering;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.564095

Filename

564095