Title :
Bandwidth of a square hard horn
Author_Institution :
Norwegian Inst. of Technol., Trondheim, Norway
fDate :
8/1/1988 12:00:00 AM
Abstract :
Horn antennas with dielectrically-filled longitudinal corrugations have recently been presented, and have been referred to as hard horns. Cylindrical hard horns can support a TEM wave at the design frequency, providing uniform aperture distribution and zero cross polarisation: this makes them attractive to use as compact elements in cluster feeds. In the paper the characteristic equation of a square hard waveguide is presented, and the crosspolar bandwidth is determined.
Keywords :
antenna feeders; antenna radiation patterns; antenna theory; dielectric-loaded antennas; waveguide antennas; TEM wave; cluster feeds; crosspolar bandwidth; dielectrically-filled longitudinal corrugations; horn antennas; radiation pattern; square hard horn; uniform aperture distribution; zero cross polarisation;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings H
