DocumentCode
969726
Title
Performance of a resonant input SQUID amplifier system
Author
Simmonds, M.B. ; Fertig, W.A. ; Giffard, R.P.
Author_Institution
S.H.E. Corporation, San Diego, CA
Volume
15
Issue
1
fYear
1979
fDate
1/1/1979 12:00:00 AM
Firstpage
478
Lastpage
481
Abstract
We have demonstrated that the input circuit of a SQUID magnetometer may be resonated at the signal frequency to obtain enhanced sensitivity. The improvement which may be obtained over a narrow bandwidth is limited in principle by the input noise of the SQUID. In practice the sensitivity on resonance is limited by thermal noise, and depends on the temperature and Q of the input circuit.
Keywords
Josephson device amplifiers; Magnetometers, superconducting; Bandwidth; Circuit noise; Frequency; Magnetic circuits; Magnetic noise; RLC circuits; Resonance; SQUIDs; Superconducting coils; Superconducting device noise;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.1979.1060155
Filename
1060155
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