Title :
Application of rectangular and elliptical dielcore feed horns to elliptical reflector antennas
Author :
Lier, Erik ; Rahmat-Samii, Yahya ; Rengarajan, Sembiam R.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
fDate :
11/1/1991 12:00:00 AM
Abstract :
The pattern characteristics of elliptical reflector antennas are investigated when they are fed by rectangular and elliptical horns partially filled with a dielectric. The bandwidth characteristics of these dielcore horns are superior to those of their corrugated horn counterparts. Representative reflector patterns are computed to properly demonstrate the utility of these feeds for reflector antennas with elliptical apertures. This reflector antenna exhibits high efficiency and low cross polarization, and may be suitable for radar and satellite antenna applications. The antenna configuration may become useful in relatively small antennas where more than 10% cross-polar bandwidth is required. The efficient dielcore horns may also be used as feeds for elliptical nonshaped dual-reflector antennas
Keywords :
antenna feeders; antenna radiation patterns; reflector antennas; dielcore feed horns; elliptical horns; elliptical reflector antennas; high efficiency; low cross polarization; radar applications; radiation patterns; rectangular horns; satellite antenna applications; Antenna feeds; Aperture antennas; Bandwidth; Dielectrics; Horn antennas; Polarization; Radar antennas; Radar applications; Reflector antennas; Satellite antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
