Title :
Practical low-noise quasiparticle receiver for 80¿100 GHz
Author :
Blundell, Raymond ; Gundlach, K.H. ; Blum, E.J.
Author_Institution :
Domaine Universitaire de Grenoble, Institut de Radio Astronomie Millimÿtrique Voie 10, Saint Martin d´Hÿres, France
Abstract :
We have tested a heterodyne receiver for millimetre-wave radio astronomy, which uses a quasiparticle mixer with junctions of Pb/Bi/In-oxide-Pb/Bi. 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.
Keywords :
bismuth alloys; indium alloys; lead alloys; microwave detectors; mixers (circuits); radioastronomy; receivers; solid-state microwave devices; superconducting junction devices; 80 to 100 GHz; Bi alloys; EHF; In alloys; MM wave detection; Pb alloys; Pb-Bi-In/oxide/Pb-Bi; heterodyne receiver; microwaves; millimetre-wave radioastronomy; mixer conversion loss; noise temperature; quasiparticle mixer; superconducting tunnel junction;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830337
