Title :
Low-noise 140-170 GHz heterodyne receiver using quasiparticle tunnel junctions
Author :
Blundell, Raymond ; Ibruegger, J. ; Gundlach, K.H. ; Blum, E.J.
Author_Institution :
Domaine Universitaire de Grenoble, Institut de Radio Astronomie Millimétrique, Voie 10, Saint Martin d´Hÿres, France
Abstract :
Laboratory tests have been made using single quasiparticle tunnel junctions as the nonlinear element for mixing in a heterodyne receiver. Double-sideband receiver noise temperatures of l00±10 K are typical at local oscillator frequencies of 140 to 155 GHz, and mixer conversion losses of less than 3.5 dB are obtained in this frequency range.
Keywords :
bismuth alloys; indium alloys; lead alloys; mixers (circuits); receivers; solid-state microwave devices; superconducting junction devices; 140 to 170 GHz; EHF; MM wave region; Pb-Bi-In/oxide/Pb-Bi; heterodyne receiver; low-noise design; nonlinear mixing element; quasiparticle tunnel junctions; solid-state microwave devices; superconducting junction devices;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19840333
