DocumentCode :
1038338
Title :
Radiation properties of the optimized offset-fed radial rib umbrella reflector antenna
Author :
Prata, A., Jr. ; Rusch, Willard V T
Author_Institution :
Univ. of Southern California, Los Angeles, CA, USA
Volume :
35
Issue :
8
fYear :
1987
fDate :
8/1/1987 12:00:00 AM
Firstpage :
977
Lastpage :
980
Abstract :
The properties of the offset-fed radial rib umbrella reflector are analyzed. A simple formula for positioning the feed to maximize the gain is given. The best aim point for the feed is numerically determined to be very close to the rib center. The exponent of a 
feed pattern, evaluated for maximum gain, and the loss due to the gores is presented. It is shown that the offset configuration exhibits the same behavior and position of the gore-related sidelobe as the front-fed umbrella reflector.
feed pattern, evaluated for maximum gain, and the loss due to the gores is presented. It is shown that the offset configuration exhibits the same behavior and position of the gore-related sidelobe as the front-fed umbrella reflector.Keywords :
Offset reflector antennas; Reflector antennas, offset; Umbrella antennas; Aperture antennas; Coaxial components; Equations; Feeds; Geometry; Gratings; Joining processes; Reflector antennas; Ribs;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.1987.1144197
Filename :
1144197
Link To Document :
