NASA NTRS · 19740000257
Bidirectional zoom antenna
Abstract
Antenna comprises two parabolic cylinders placed orthogoanlly to each other. One cylinder serves as main reflector, and the other as subreflector. Cylinders have telescoping sections to vary antenna beamwidth. Beamwidth can be adjusted in elevation, azimuth, or both. Design has no restriction as to choice of polarization.
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Schmidt, R. F.. 1975-01-01. Bidirectional zoom antenna. https://ntrs.nasa.gov/citations/19740000257
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