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
fDate :
9/1/1997 12:00:00 AM
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;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
