Low sidelobe precise beam aspect ratio scalar horns

A new design method for developing either linearly or circularly polarized low sidelobe corrugated sectoral horn antennas is described. These antennas may be designed to provide constant beam aspect ratios (BAR's) ranging from 2:1 to 5:1. Such performance is achieved over bandwidths of up to 21...

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Bibliographic Details
Published in:I.R.E. transactions on antennas and propagation 1980-05, Vol.28 (3), p.412-416
Main Authors: Schneider, W., Blakney, T., Zanella, V.
Format: Article
Language:English
Subjects:
Apertures
Bandwidth
Communication system control
Design methodology
Feeds
Horn antennas
Polarization
Reflector antennas
Space technology
Testing
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Description
Summary:A new design method for developing either linearly or circularly polarized low sidelobe corrugated sectoral horn antennas is described. These antennas may be designed to provide constant beam aspect ratios (BAR's) ranging from 2:1 to 5:1. Such performance is achieved over bandwidths of up to 21 percent for dual-linear polarization and 17 percent for circular polarization. Potential applications include use in communication satellite reflector systems where beam shaping, frequency reuse, or high adjacent beam isolation is required. Selecting aperture phase distribution rather than simply minimizing aperture phase error is the key to obtaining these results. Mechanical design and performance data are presented to facilitate fabrication of antennas that satisfy a wide range of performance requirements.
ISSN:0018-926X
0096-1973
1558-2221
DOI:10.1109/TAP.1980.1142346