Analysis of blended rolled edge reflectors using numerical UTD

Author

Ellingson, Steven W. ; Gupta, Inder J. ; Burnside, Walter D.

Author_Institution

Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA

Volume

38

Issue

12

fYear

1990

fDate

12/1/1990 12:00:00 AM

Firstpage

1969

Lastpage

1971

Abstract

The uniform geometrical theory of diffraction (UTD) concept is used to predict the scattered fields in the target zones of compact-range reflectors. Since the necessary diffraction coefficients are not known in a closed form, a numerical method to calculate the diffraction coefficients is described. In the numerical method, the problem is reduced to two dimensions, and physical optics line integration is used to compute the diffraction coefficients. Thus, the method is computationally efficient. The method is used to analyze two compact-range reflectors. The results obtained using the numerical UTD show good agreement with the scattered fields obtained using a corrected physical optics surface integration

Keywords

antenna reflectors; electromagnetic wave diffraction; electromagnetic wave scattering; numerical methods; physical optics; UTD; blended rolled edge reflectors; compact-range reflectors; diffraction coefficients; electromagnetic diffraction; electromagnetic scattering; numerical method; physical optics line integration; scattered fields; uniform geometrical theory of diffraction; Geometry; Lighting; Optical computing; Optical diffraction; Optical scattering; Optical surface waves; Physical optics; Physical theory of diffraction; Physics computing; Tellurium;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.60989

Filename

60989