Title :
Compact multimode horn with low sidelobes for global Earth coverage
Author :
Granet, Christophe ; Bird, Trevor S. ; James, Graeme L.
Author_Institution :
CSIRO, Epping, NSW, Australia
fDate :
7/1/2000 12:00:00 AM
Abstract :
A new multimode corrugated horn is described for full-Earth coverage from a geostationary satellite. The horn has low sidelobes, low cross polarization, and is compact. We outline the design of this horn and compare its performance with other circular horn types, including conventional single and multimode-corrugated horns and dielectric loaded horns. A design was fabricated and measured results are described for return loss, radiation patterns, and axial ratio. These measurements demonstrate excellent agreement with computer predictions using mode-matching software
Keywords :
antenna radiation patterns; antenna testing; electromagnetic wave polarisation; horn antennas; satellite antennas; axial ratio; circular horn; compact multimode horn; computer predictions; dielectric loaded horns; full-Earth coverage; geostationary satellite; global Earth coverage; horn design; low cross polarization; low sidelobes; measured results; mode-matching software; multimode corrugated horn; performance comparison; radiation patterns; return loss; single mode corrugated horn; Antenna measurements; Dielectric loss measurement; Dielectric measurements; Earth; Feeds; Horn antennas; Interference; Polarization; Reflector antennas; Satellites;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
