Title :
A 19 element cryogenic phased array feed for the Green Bank Telescope
Author :
D. Anish Roshi;Karl F. Warnick;Joe Brandt;J. Richard Fisher;Pam Ford;Brian D. Jeffs;Paul Marganian;Morgan McLeod;Melinda Mello;Matthew Morgan;Roger Norrod;William Shillue;Robert Simon;Steven White
Author_Institution :
National Radio Astronomy Observatory Charlottesville, VA, USA 22903
fDate :
7/1/2015 12:00:00 AM
Abstract :
A low-noise cryogenic phased array feed (PAF) is in development for the Green Bank Telescope (GBT). The feed consists of electrically small elements tuned to operate near 1.4 GHz and optimized for active impedance matching to cooled front end low noise amplifiers (LNAs). A prototype cryogenic PAF with analog fiber link, down-converters and streaming data acquisition system was recently tested on the GBT. Preliminary results are presented. These efforts form an important step towards the development of a new receiver system, the focal L-band array for the GBT (FLAG).
Keywords :
"Arrays","Telescopes","Temperature measurement","Receivers","Extraterrestrial measurements","Radio astronomy","Noise"
Conference_Titel :
Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015 IEEE International Symposium on
DOI :
10.1109/APS.2015.7305077
