Astronomy and Astrophysics – Astrophysics – Instrumentation and Methods for Astrophysics
Scientific paper
2010-05-11
J Infrared Milli Terahz Waves (2010) 31:1331-1337
Astronomy and Astrophysics
Astrophysics
Instrumentation and Methods for Astrophysics
Version accepted for publication on Journal of Infrared Millimeter and Terahertz Waves, 6 pages, 6 figures, 1 table
Scientific paper
10.1007/s10762-010-9715-z
In this paper we present the realization and a preliminary characterization of a SIS based receiver. It has been developed for the MASTER experiment that consists in a three-band SIS receiver (94, 225 and 345 GHz) for astrophysical observations through the atmospheric windows available at high altitude dry sites. The measurements performed establish an upper limit to the overall receiver noise temperature. A comparison has been tried with the MASTER requirements and with state of the art results. A noise figure of 110 K has been obtained at 94 GHz, about 22 times the quantum limit.
Brunetti Letizia
Fretto M.
Lacquaniti Valentino
Leo N. de
Oberto Luca
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