DocumentCode :
1552546
Title :
A new dual-reflector feed system for the Nancay radio telescope
Author :
Granet, C. ; James, G.L.
Author_Institution :
Div. of Radiophys., CSIRO, Epping, NSW
Volume :
45
Issue :
9
fYear :
1997
fDate :
9/1/1997 12:00:00 AM
Firstpage :
1366
Lastpage :
1373
Abstract :
A new compact dual-reflector Gregorian feed system has been designed to improve the overall performance of the Nancay radio telescope. To operate continuously within the 1.0-3.5-GHz band, two wideband compact corrugated horns are used. The new feed system improves the sensitivity of the telescope by a factor between 2 and 3. To verify the theoretical design, a 1/20th-scale model was constructed and tested. The measured results were in excellent agreement with the predicted values
Keywords :
antenna testing; horn antennas; radiotelescopes; reflector antenna feeds; reflector antennas; 1 to 3.5 GHz; Gregorian feed system; Nancay radio telescope; dual-reflector feed system; sensitivity improvement; wideband compact corrugated horns; Antenna feeds; Antenna radiation patterns; Design optimization; Frequency; Land surface temperature; Optical design; Polarization; Radio astronomy; Structural beams; Wideband;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/8.623125
Filename :
623125
Link To Document :
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