A corrugated surface with low backscatter

Author

Bhattacharyya, Asoke K. ; Tandon, S.K.

Author_Institution

Indian Institute of Technology, Kharagpur, India

Volume

32

Issue

8

fYear

1984

fDate

8/1/1984 12:00:00 AM

Firstpage

870

Lastpage

872

Abstract

A low backscatter corrugated metal surface has been designed, fabricated, and tested for $H$ -polarized transverse electromagnetic (TEM) incident waves. The problem has been formulated using the scattering matrix approach and reflection and transmission co-efficients at the fin-air interface are determined using an integral equation approach. Hence, an expression for monostatic radar cross section (RCS) is obtained. The RCS has been experimentally measured using a continous wave (CW) radar and good agreement has been obtained with theoretical results. The fin-corrugated surface gives a rather small return (35 dB down with respect to the flat conducting plate of same size) for incident angles up to $80.6\\deg$ when the period of corrugation a is in the range $\\lambda /2 < a < \\lambda$ .

Keywords

Corrugated surfaces; Electromagnetic (EM) scattering by rough surfaces; Backscatter; Corrugated surfaces; Electromagnetic measurements; Electromagnetic reflection; Electromagnetic scattering; Integral equations; Radar cross section; Radar scattering; Surface waves; Testing;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.1984.1143421

Filename

1143421