DocumentCode
1023017
Title
Josephson analog amplifier with large current gain
Author
Yoshida, K. ; Hashimoto, Toshikazu ; Nagatsuma, T. ; Enpuku, K.
Author_Institution
Kyushu University, Fukuoka, Japan
Volume
23
Issue
2
fYear
1987
fDate
3/1/1987 12:00:00 AM
Firstpage
723
Lastpage
726
Abstract
Analog amplifiers utilizing the flux-flow phenomenon in a long Josephson tunnel junction, Flux-Flow Amplifier(FFA), have been studied experimentally. The operation of the amplifier is based on the modulation of dc I-V curves of a long Josephson junction by applied magnetic fields, which acts as a magnetic-field to voltage transducer. Strong dependences of the transducer characteristics on junction parameters and geometries are elucidated. Experiments on a series array of FFA´s for higher current gains and larger output voltages were also carried out successfully.
Keywords
Josephson device amplifiers; Equivalent circuits; Geometry; Helium; Josephson junctions; Magnetic fields; Magnetic modulators; Operational amplifiers; SQUIDs; Transducers; Voltage;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.1987.1064912
Filename
1064912
Link To Document