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
fDate :
8/1/1990 12:00:00 AM
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;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
