DocumentCode :
971123
Title :
Parametric amplification in Josephson tunnel junction arrays at 33 GHz
Author :
Goodall, F. ; Bale, F. ; Rudner, S. ; Claeson, T. ; Finnegan, T.F.
Author_Institution :
Appleton Research Laboratory, Slough, England
Volume :
15
Issue :
1
fYear :
1979
fDate :
1/1/1979 12:00:00 AM
Firstpage :
458
Lastpage :
461
Abstract :
Progress on the development of a low-noise superconducting parametric amplifier operated at liquid helium temperatures and designed for practical use with a radio telescope at 33 GHz is reported. Series arrays of small Pb - Pb oxide - Pb tunnel junctions ( 
m × 20 μm) are coupled in a microstrip configuration and the Josephson device is operated as a reflection-type amplifier in the doubly degenerate mode. Various practical considerations in using such a devise on a telescope are reviewed. In preliminary experiments, gains of greater than 13 dB have been observed near 33 GHz.
m × 20 μm) are coupled in a microstrip configuration and the Josephson device is operated as a reflection-type amplifier in the doubly degenerate mode. Various practical considerations in using such a devise on a telescope are reviewed. In preliminary experiments, gains of greater than 13 dB have been observed near 33 GHz.Keywords :
Josephson device amplifiers; Millimeter-wave amplifiers; Parametric amplifiers; Radio telescopes; Josephson junctions; Laboratories; Low-noise amplifiers; Masers; Operational amplifiers; Optical design; Radio astronomy; Superconducting devices; Telescopes; Temperature;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.1979.1060278
Filename :
1060278
Link To Document :
