Title :
Small efficient axially symmetric dual reflector antennas
Author :
Jenn, David C. ; Vered, Nissan ; Ordonez, Manuel
Author_Institution :
US Naval Postgrad. Sch., Monterey, CA, USA
fDate :
1/1/1993 12:00:00 AM
Abstract :
Two efficient small dual reflector antenna designs are analyzed using the method of moments. One is based on the standard Cassegrain system and the other is a displaced axis design. Both incorporate a low-blockage feed consisting of a dipole radiating in the presence of parasitic elements. In the first case, efficiencies greater than 55% were obtained for 20-wavelength main reflectors; in the second, an efficiency greater than 67% was achieved for a 22-wavelength main reflector
Keywords :
antenna feeders; antenna radiation patterns; reflector antennas; 20-wavelength main reflectors; 22-wavelength main reflector; 55 percent; 67 percent; Cassegrain system; dipole; displaced axis design; dual reflector antennas; efficiency; low-blockage feed; method of moments; parasitic elements; radiation patterns; small axially symmetric reflector antennas; Apertures; Degradation; Dipole antennas; Feeds; Interference; Moment methods; Optical surface waves; Reflector antennas; Satellite antennas; Satellite broadcasting;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
