A fast hybrid analytical and numerical physical optics analysis of very large cylindrical reflectors with linear feed arrays

Author

Tap, K. ; Pathak, P.H.

Author_Institution

ElectroScience Lab., Ohio State Univ., Columbus, OH, USA

Volume

2

fYear

2004

fDate

20-25 June 2004

Firstpage

2011

Abstract

A novel hybrid combination of asymptotic high frequency analysis with the numerical physical optics (PO) procedure is introduced for the fast and accurate prediction of the far field scattering from a very large perfectly conducting cylindrical reflector with slowly varying but otherwise arbitrary cross section. This reflector is fed by stacked linear periodic phased arrays of electric point currents to simplify the array modeling for the present. The application of this study is to predict the performance of a large spaceborne cylindrical scanning reflector being built by Harris Corporation under the ISAT program.

Keywords

antenna phased arrays; antenna radiation patterns; electromagnetic wave scattering; linear antenna arrays; physical optics; reflector antenna feeds; scanning antennas; Harris Corporation; ISAT program; asymptotic high frequency analysis; electric point currents; far field scattering; hybrid analytical numerical analysis; linear feed arrays; numerical PO procedure; perfectly conducting cylindrical reflector; physical optics analysis; reflector feed; slowly varying cross section; spaceborne cylindrical scanning reflector; stacked linear periodic phased arrays; very large cylindrical reflectors; Computational efficiency; Discrete Fourier transforms; Feeds; Frequency; Lighting; Magnetic fields; Optical arrays; Optical scattering; Phased arrays; Physical optics;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2004. IEEE

Print_ISBN

0-7803-8302-8

Type

conf

DOI

10.1109/APS.2004.1330601

Filename

1330601