DocumentCode :
1432892
Title :
New technique for beam steering with fixed parabolic reflectors
Author :
Rudge, A.W. ; Withers, M.J.
Author_Institution :
IIT Research Institute, Chicago, USA
Volume :
118
Issue :
7
fYear :
1971
fDate :
7/1/1971 12:00:00 AM
Firstpage :
857
Lastpage :
863
Abstract :
A technique is described which offers the potential of achieving wide-angle beam steering with fixed parabolic reflectors. The technique involves a primary-feed device with an aperture field distribution which can be adapted to match the distorted field distributions resulting from a parabolic reflector when an off-axis plane wave is incident. To provide an adaptation without deterioration of the system signal/noise ratio, which requires only a movement of the primary feed along a given locus and an adjustment of noninteracting phase shifters, the primary feed carries out a spatial Fourier transformation of the intercepted fields. The technique has been implemented in an experimental X band antenna and beam steering of ±15 beamwidths achieved with negligible distortion of the directional pattern and less than 0.5 dB loss in gain.
Keywords :
reflector antennas; X band antenna; fixed parabolic reflectors; reflector antennas; technique; wide angle beam steering;
fLanguage :
English
Journal_Title :
Electrical Engineers, Proceedings of the Institution of
Publisher :
iet
ISSN :
0020-3270
Type :
jour
DOI :
10.1049/piee.1971.0166
Filename :
5251557
Link To Document :
بازگشت