DocumentCode :
1027652
Title :
GTD analysis of the radiation patterns of a prime focus paraboloid with shroud
Author :
Narasimhan, M.S. ; Raghavan ; Ramanujam, P.
Author_Institution :
Centre for Systems and Devices, Indian Inst. of Technol., Madras India
Volume :
31
Issue :
5
fYear :
1983
fDate :
9/1/1983 12:00:00 AM
Firstpage :
792
Lastpage :
794
Abstract :
The uniform geometrical theory of diffraction (UGTD) is employed to analyze the far-field radiation patterns of a prime focus paraboloid with a cylindrical shroud. The blockage of the aperture illumination of the dish by the gooseneck and the primary feed is also taken into account in the analysis. Far-field radiation patterns (for 
), calculated for a typical prime focus paraboloid with 2 m aperture diameter, designed and fabricated, are compared with the experimentally derived patterns at 8.8 GHz in the 
- and 
-planes. There is a satisfactory agreement between the two results.
), calculated for a typical prime focus paraboloid with 2 m aperture diameter, designed and fabricated, are compared with the experimentally derived patterns at 8.8 GHz in the - and -planes. There is a satisfactory agreement between the two results.Keywords :
Geometrical diffraction theory; Parabolic reflector antennas; Reflector antennas, parabolic; Apertures; Broadband communication; Electromagnetic diffraction; Feeds; Geometry; Lighting; Microwave communication; Neck; Pattern analysis; Physical theory of diffraction; Production facilities;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.1983.1143127
Filename :
1143127
Link To Document :
