DocumentCode
1008892
Title
dc SQUID as a tuned radiofrequency amplifier
Author
Hilbert, Claude ; Clarke, John
Author_Institution
University of California, California
Volume
21
Issue
2
fYear
1985
fDate
3/1/1985 12:00:00 AM
Firstpage
1029
Lastpage
1031
Abstract
The design criteria for a tuned radiofrequency amplifier based on a dc SQUID are briefly discussed. A practical amplifier involving a planar dc SQUID with a 4-1/4-turn spiral input coil and operated at 4.2K had a gain of 18.6 ± 0.5 dB and a noise temperature of 1.7± 0.5K at 93 MHz. These results are in satisfactory agreement with predicted values.
Keywords
Josephson device amplifiers; Capacitance; Circuit noise; Coils; Impedance; Inductance; Nuclear magnetic resonance; Radio frequency; Radiofrequency amplifiers; SQUIDs; Superconducting device noise;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.1985.1063703
Filename
1063703
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