Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ell....19..498b&link_type=abstract
Electronics Letters (ISSN 0013-5194), vol. 19, June 23, 1983, p. 498, 499.
Astronomy and Astrophysics
Astronomy
5
Low Noise, Microwave Equipment, Millimeter Waves, Mixing Circuits, Radio Astronomy, Sis (Semiconductors), Superheterodyne Receivers, Cryogenic Cooling, Electron Tunneling, Microwave Oscillators, Noise Temperature, Semiconductor Junctions, Superconductors, Volt-Ampere Characteristics
Scientific paper
A heterodyne receiver for millimeter-wave radio astronomy, which uses a quasiparticle mixer with junctions of Pb/Bi/In-oxide-Pb/Bi has been tested. A receiver noise temperature of around 100 K double sideband has been measured with a number of different junctions. For one junction, the best receiver temperature obtained was 73 K, and the mixer conversion loss was less than 5.8 dB double sideband.
Blum E. J.
Blundell Ray
Gundlach Karl-Heinz
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