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....

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2011-06, Vol.59 (6), p.1954-1962
Main Authors: Imbriale, W A, Weinreb, S, Jones, G, Mani, H, Akgiray, A
Format: Article
Language:English
Subjects:
Antenna feeds
Antennas
Apples
Cryogenics
Horns
Mirrors
Noise
Noise temperature
quadridge horn
radio telescope
Radio telescopes
reflector antennas
Reflectors
Retrofitting
Valleys
Wideband
wideband feeds
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2011.2123863