Title :
LNA noise behaviour below 10K physical temperature
Author :
Melhuish, S.J. ; Blackhurst, E.J. ; Martinis, L. ; McCulloch, Malcolm ; Davis, R.J. ; Piccirillo, L. ; George, Dani
Author_Institution :
Jodrell Bank Centre for Astrophys., Univ. of Manchester, Manchester, UK
Abstract :
We present early results of noise temperature measurements made on a Planck LFI EBB Ka-band low noise amplifier at physical temperatures as low as 1.5 K. This temperature is an order of magnitude lower than typically used on radio astronomy receiver systems. The results are tentatively compared with semi-empirical predictions made by Pospieszalski.
Keywords :
low noise amplifiers; noise measurement; radioastronomy; temperature measurement; LNA noise behaviour; Planck LFI EBB Ka-band low noise amplifier; noise temperature measurements; radio astronomy receiver systems; semiempirical predictions; temperature 1.5 K; Heating; Optical losses; Stimulated emission;
Conference_Titel :
Microwave Integrated Circuits Conference (EuMIC), 2012 7th European
Conference_Location :
Amsterdam
Print_ISBN :
978-1-4673-2302-4
Electronic_ISBN :
978-2-87487-026-2
