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
fDate :
1/1/1979 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1979.1060155
