The Design and Performance of a Wideband Radio Telescope for the GAVRT Program
Copyright policy )The Design and Performance of a Wideband Radio Telescope for the GAVRT Program
A wideband Radio Telescope was designed and built for use in the Goldstone Apple Valley Radio Telescope (GAVRT) program. It uses an existing 34-m antenna retrofitted with a tertiary offset mirror placed at the vertex of the main reflector. It can be rotated to allow using two feeds that cover the 0.5-14-GHz band. The feed for 4.0-14.0 GHz is a cryogenically cooled, commercially available, open-boundary quadridge horn from ETS-Lindgren. Coverage from 0.5 to 4.0 GHz is provided by an uncooled lower frequency version of the same feed that uses a cooled LNA. The measured aperture efficiency is greater than 40% over much of the band.
- California Institute of Technology United States
- Arizona State University United States
- National Aeronautics and Space Administration United States
- Jet Propulsion Lab United States
quadridge horn, radio telescope, Noise temperature, reflector antennas, wideband feeds, 520, 620
quadridge horn, radio telescope, Noise temperature, reflector antennas, wideband feeds, 520, 620
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