| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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A SQUID Bootstrap Circuit with a Large Parameter Tolerance |
| ZHANG Guo-Feng1,2,3, ZHANG Yi2,3**, Hans-Joachim Krause2,3, KONG Xiang-Yan1,3, Andreas Offenhäusser2,3, XIE Xiao-Ming1,3 |
1State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences (CAS), Shanghai 200050
2Peter Grünberg Institute (PGI-8), Forschungszentrum Jülich (FZJ), D-52425, Jülich, Germany
3Joint Research Laboratory on Superconductivity and Bioelectronics, Collaboration between CAS-Shanghai & FZJ, Shanghai 200050
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| Cite this article: |
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ZHANG Guo-Feng, ZHANG Yi, Hans-Joachim Krause et al 2013 Chin. Phys. Lett. 30 018501 |
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Abstract The voltage biased (SQUID) bootstrap circuit (SBC) was recently introduced as an effective means to reduce the preamplifier noise contribution. We analyze the tolerances of the SBC noise suppression performance to spreads in SQUID and SBC circuit parameters. It is found that the tolerance to spread mainly caused by the integrated circuit fabrication process could be extended by a one-time adjustable current feedback. A helium-cooled niobium SQUID with a loop inductance of 350 pH is employed to experimentally verify the analysis. From this work, design criteria for fully integrated SBC devices with a high yield can be derived.
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Received: 05 November 2012
Published: 04 March 2013
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| PACS: |
85.25.Dq
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(Superconducting quantum interference devices (SQUIDs))
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[1] Drung D, Cantor R, Peters M, Scheer H J and Koch H 1990 Appl. Phys. Lett. 57 406
[2] Kiviranta M and Sepp? H 1995 IEEE Trans. Appl. Supercond. 5 2146
[3] Xie X, Zhang Y, Wang H, Wang Y, Mück M, Dong H, Krause H J, Braginski A I, Offenh?usser A and Jiang M 2010 Supercond. Sci. Technol. 23 065016
[4] Wang Y, Xie X, Dong H, Zhang G, Wang H, Zhang Y, Mück M, Krause H J, Braginski A I, Offenh?sser A and Jiang M 2011 IEEE Trans. Appl. Supercond. 21 354
[5] Zhang G, Zhang Y, Dong H, Krause H J, Xie X, Braginski A I, Offenh?usser A and Jiang M 2011 Supercond. Sci. Technol. 24 065023
[6] Zhang Y, Zhang G, Wang H, Wang Y, Dong H, Xie X, Mück M, Krause H J, Braginski A I, Offenh?sser A and Jiang M 2011 IEEE Trans. Appl. Supercond. 21 501
[7] Zhang G, Zhang Y, Dong H, Krause H J, Xie X, Braginski A I, Offenh?usser A and Jiang M 2012 Supercond. Sci. Technol. 25 015006 |
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