Scattering by a small cavity-backed hole

Author

Kempel, Leo C. ; Senior, Thomas B A

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA

Volume

41

Issue

8

fYear

1993

fDate

8/1/1993 12:00:00 AM

Firstpage

1115

Lastpage

1121

Abstract

For plane-wave incidence, an integral equation is obtained for the magnetic current induced on a circular impedance insert in a perfectly conducting plane under the assumption that the radius is electrically small. This integral equation is solved numerically, and an analytical expression for the scattered field is determined. The complementary expression for a small disk is compared with a standard numerical code and conditions for the use of this expression are established. For a cavity-backed hole, the impedance of the insert is identified with the impedance looking into the hole as determined by a simple transmission line model, and results are presented for a few cavity geometries

Keywords

electric impedance; electromagnetic wave scattering; integral equations; numerical analysis; radar cross-sections; circular impedance insert; electromagnetic scattering; integral equation; magnetic current; perfectly conducting plane; plane-wave incidence; small cavity-backed hole; small disk; transmission line model; Boundary conditions; Code standards; Geometry; Integral equations; Magnetic analysis; Radar cross section; Radar scattering; Solid modeling; Surface impedance; Transmission lines;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.244653

Filename

244653