Title :
230¿271 GHz cryogenic radiometer
Author :
Ellison, B.N. ; Vizard, David R.
Author_Institution :
Rutherford-Appleton Laboratory, Didcot, UK
Abstract :
The letter describes a cryogenic millimetre-wave heterodyne radiometer developed at the Rutherford-Appleton Laboratory and used for radio astronomical observations on the United Kingdom infra-red telescope, Hawaii. Single-sideband-system noise temperatures of 1600 and 1900 K have been achieved at frequencies of 230 and 271 GHz, respectively, with the system cooled to 77 K.
Keywords :
cryogenics; infrared astronomy; radiometers; radiotelescopes; 230 GHz to 271 GHz; 55B noise temperatures; MM waves; United Kingdom infrared telescope; cryogenic millimetre-wave heterodyne radiometer; radioastronomical observations;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830400
