Title :
dc SQUID as a tuned radiofrequency amplifier
Author :
Hilbert, Claude ; Clarke, John
Author_Institution :
University of California, California
fDate :
3/1/1985 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1985.1063703
