Gain characteristics of SQUID-based RF amplifiers depending on device parameters

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Radio-frequency (RF) amplifiers based on direct current (DC) superconducting quantum interference device (SQUID) have low-noise performance for precision physics experiments. Gain curves of SQUID RF amplifiers depend on several parameters of the SQUID and operation conditions. We are developing SQUID RF amplifiers for application to measure very weak RF signals from ultra-low-temperature high-magnetic-field microwave cavity in axion search experiments. In this study, we designed, fabricated and characterized SQUID RF amplifiers with different SQUID parameters, such as number of input coil turn, shunt resistance value of the junction and coupling capacitance in the input coil, and compared the results.
Publisher
KOREA INST APPLIED SUPERCONDUCTIVITY & CRYOGENICS
Issue Date
2019-03
Language
English
Article Type
Article
Citation

PROGRESS IN SUPERCONDUCTIVITY AND CRYOGENICS, v.21, no.1, pp.10 - 14

ISSN
1229-3008
DOI
10.9714/psac.2019.21.1.010
URI
http://hdl.handle.net/10203/268633
Appears in Collection
PH-Journal Papers(저널논문)
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