DocumentCode :
1023881
Title :
Boresight-gain loss and gore-related sidelobes of an umbrella reflector
Author :
Rusch, Willard V T ; Wanselow, R.D.
Author_Institution :
Dept. of Electrical Engng., Univ. of Southern California, Los Angeles, CA USA
Volume :
30
Issue :
1
fYear :
1982
fDate :
1/1/1982 12:00:00 AM
Firstpage :
153
Lastpage :
157
Abstract :
It is shown that energy in the gore-related sidelobes of an umbrella reflector comes from energy lost from the main beam. Both boresight gore-loss and sidelobe level correlate directly with cyclic aperture phase error caused by the geometry. The gore-sidelobe peak is located near 
, where 
where 
is the number of gores and 
is the reflector diameter. An expression is also derived for the amplitude of the gore-related sidelobe.
, where where is the number of gores and is the reflector diameter. An expression is also derived for the amplitude of the gore-related sidelobe.Keywords :
Satellite antennas; Umbrella antennas; Antennas and propagation; Apertures; Electromagnetic diffraction; Electromagnetic fields; Electromagnetic propagation; Electromagnetic radiation; Electromagnetic scattering; Geometry; Reflector antennas; Ribs;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.1982.1142748
Filename :
1142748
Link To Document :
