DocumentCode
1431005
Title
Derivation and application of the equivalent paraboloid for classical offset Cassegrain and Gregorian antennas
Author
Rusch, Willard V T ; Prata, A. Luizio, Jr. ; Rahmat-Samii, Yahya ; Shore, Robert A.
Author_Institution
Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA
Volume
38
Issue
8
fYear
1990
fDate
8/1/1990 12:00:00 AM
Firstpage
1141
Lastpage
1149
Abstract
The equivalent paraboloid is derived for classical offset Cassegrain and Gregorian antennas. The important practical case of systems with circular exit apertures is discussed in detail, and a condition for a symmetric equivalent paraboloid is derived. For such systems, diffraction effects are investigated using tapered and scanned feeds to illuminate the equivalent paraboloid and the two-reflector system
Keywords
antenna radiation patterns; reflector antennas; circular exit apertures; classical offset Cassegrain antennas; classical offset Gregorian antennas; diffraction effects; equivalent paraboloid; radiation patterns; scanned feeds; tapered feeds; two-reflector system; Apertures; Ellipsoids; Feeds; Geometry; Optical computing; Physical optics; Physical theory of diffraction; Physics computing; Radio frequency; Systems engineering and theory;
fLanguage
English
Journal_Title
Antennas and Propagation, IEEE Transactions on
Publisher
ieee
ISSN
0018-926X
Type
jour
DOI
10.1109/8.56949
Filename
56949
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