Scattering from finite by infinite arrays of slots in a thin conducting wedge

Author

Skinner, J. Paul ; Whaley, Carlos C., Jr. ; Chattoraj, Tarun K.

Author_Institution

Dept. of Electr. & Comput. Eng., Wright Res. & Dev. Center, Wright-Patterson AFB, OH, USA

Volume

43

Issue

4

fYear

1995

fDate

4/1/1995 12:00:00 AM

Firstpage

369

Lastpage

375

Abstract

The radar scattering from a finite by infinite array of slots cut into a thin conducting wedge is considered. The wedge is formed by taking a thin ground plane and applying a bend to create a sharp edge which is parallel to the columns of slots in the infinite axis. Results are derived for thin linear slots whose major axes are either parallel or perpendicular to the edge. A hybrid moment method and geometrical theory of diffraction approach is used, with magnetic current expansion functions defined using Floquet´s theorem on single columns of slots. Predictions generally agree with scattering measurements of finite by finite array physical models with monostatic patterns taken in a plane orthogonal to the sharp edge

Keywords

conducting materials; frequency selective surfaces; geometrical theory of diffraction; method of moments; radar cross-sections; Floquet´s theorem; bend; frequency selective surfaces; geometrical theory of diffraction; hybrid moment method; infinite arrays; infinite axis; magnetic current expansion functions; monostatic patterns; radar scattering; scattering measurements; sharp edge; thin conducting wedge; thin ground plane; thin linear slots; Diffraction; Electromagnetic compatibility; Electromagnetic interference; Frequency selective surfaces; Geometry; Moment methods; Predictive models; Radar scattering; Solid modeling; USA Councils;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.376034

Filename

376034