DocumentCode
1540199
Title
Tightly coupled dc SQUIDs with resonance damping
Author
Ono, R.H. ; Koch, J.A. ; Steinbach, A. ; Huber, M.E. ; Cromar, M.W.
Author_Institution
Nat. Inst. of Stand. & Technol., Boulder, CO, USA
Volume
7
Issue
2
fYear
1997
fDate
6/1/1997 12:00:00 AM
Firstpage
2538
Lastpage
2541
Abstract
We have reduced the effect of resonances on washer style dc SQUIDs coupled to input flux transformers and analyzed our damping structures using a distributed circuit model. A resistance of 1/spl Omega/ is placed across each turn of a 137-turn coil coupled to a planar washer dc SQUID reducing the structure in the voltage-flux curve thus extending the range of current biases over which the device operates. The energy sensitivity of the SQUID is predicted to not be degraded by the intracoil resistors.
Keywords
SQUIDs; damping; superconducting transformers; coupled planar washer DC SQUIDs; current bias; distributed circuit model; energy sensitivity; flux transformer; intracoil resistor; resonance damping; voltage-flux characteristics; Coils; Coupled mode analysis; Coupling circuits; Damping; Degradation; RLC circuits; Resistors; Resonance; SQUIDs; Transformers;
fLanguage
English
Journal_Title
Applied Superconductivity, IEEE Transactions on
Publisher
ieee
ISSN
1051-8223
Type
jour
DOI
10.1109/77.621756
Filename
621756
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