DocumentCode :
1027800
Title :
Secondary pattern and focal region distribution of reflector antennas under wide-angle scanning
Author :
Hung, Charles C. ; Mittra, Raj
Author_Institution :
Lockheed Missiles and Space Co., Sunnyvale, CA USA
Volume :
31
Issue :
5
fYear :
1983
fDate :
9/1/1983 12:00:00 AM
Firstpage :
756
Lastpage :
763
Abstract :
A new numerical method, Fourier-Bessel series techniques, has been developed to investigate the far-field pattern and focal region distribution of reflector antennas under wide-angle scanning. In this Fourier-Bessel series technique, the current on the reflector surface is first expanded in terms of elementary sinusoidal functions via the well established fast Fourier transform (FFT) algorithm and the surface integration involved in physical optics integration is then carried out analytically. The derivation of Fourier-Bessel series and its convergence as applied to parabolic reflectors are described. The secondary patterns and focal region distributions of a parabolic reflector with F/D = 0.48 and scanning up to 48 beamwidths are presented.
Keywords :
Reflector antennas; Apertures; Convergence; Directive antennas; Fast Fourier transforms; Feeds; Lighting; Optical surface waves; Physical optics; Receiving antennas; Reflector antennas;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.1983.1143141
Filename :
1143141
Link To Document :
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