Title :
Towards a high sensitivity cryogenic phased array feed antenna for the Green Bank Telescope
Author :
Warnick, Karl F. ; Carter, David ; Webb, Taylor ; Jeffs, Brian D. ; Landon, Jonathan ; Asthana, Vikas ; Elmer, Michael ; Norrod, Roger ; Roshi, D. Anish ; Fisher, J. Richard
Author_Institution :
ECE Dept., Brigham Young Univ., Provo, UT, USA
Abstract :
Efforts have been underway for the last several years to develop phased array feed antennas for large reflectors such as the Green Bank Telescope (GBT) as well as mid-size reflectors for Square Kilometer Array demonstration instruments. We report on recent work on a cryogenic L-band phased array feed with the goal of reducing the beam equivalent system noise temperature so that it is competitive with that of traditional horn type feeds.
Keywords :
antenna feeds; antenna phased arrays; antenna radiation patterns; cryogenics; horn antennas; optical elements; radiotelescopes; Green Bank Telescope; beam equivalent system; cryogenic L-band phased array feed; cryogenic phased array feed antenna; horn type feeds; large reflectors; mid-size reflectors; noise temperature; square kilometer array demonstration instruments; Arrays; Cryogenics; Feeds; Frequency measurement; Impedance; Noise;
Conference_Titel :
General Assembly and Scientific Symposium, 2011 XXXth URSI
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-5117-3
DOI :
10.1109/URSIGASS.2011.6050403
