Title :
Elliptically Shaped Quad-Ridge Horn Antennas as Feed for a Reflector
Author :
Jacobs, O.B. ; Odendaal, J.W. ; Joubert, J.
Author_Institution :
Dept. of Electr. Electron. & Comput. Eng., Univ. of Pretoria, Pretoria, South Africa
fDate :
7/3/1905 12:00:00 AM
Abstract :
Quad-ridge horn antennas of various geometries are considered as possible candidates for a wideband reflector antenna feed. It is demonstrated that shaping the sidewalls of the ridge horns significantly improves the radiation characteristics of the horns. The conical quad-ridge horn with an elliptically shaped sidewall shows the most promise as a wideband reflector antenna feed. The radiation patterns are rotationally symmetric, and the 10-dB beamwidth is reasonably constant over a wide frequency range.
Keywords :
antenna radiation patterns; broadband antennas; horn antennas; reflector antenna feeds; antenna radiation pattern characteristics; conical quad-ridge horn antenna; elliptically shaped quad-ridge horn antennas; wideband reflector antenna feed; Antenna feeds; Antenna radiation patterns; Broadband antennas; Horn antennas; Reflector antennas; Dual polarization; horn antenna; radio astronomy; reflector antenna; wideband;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2011.2163050
