Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Superconductive device
Reexamination Certificate
2005-09-27
2005-09-27
Zweizig, Jeffrey (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
Superconductive device
Reexamination Certificate
active
06949970
ABSTRACT:
A programmable voltage standard element which consists of Josephson junction arrays having Josephson junction devices which are connected in series generates constant voltage by impression of bias current and microwave.The voltage standard element has bias current terminals each of which is provided for a respective section comprising a Josephson junction devices of in-series connection that are divided by the number of the nth power of 3. A bias current supply circuit independently impresses bias current of a predetermined value to a bias current terminal for every section. A controlling circuit controls a bias current supply circuit to impress bias current of a predetermined value to a Josephson junction array of each section and control impression of microwave.
REFERENCES:
patent: 5479131 (1995-12-01), Lee
patent: 5565866 (1996-10-01), Hamilton et al.
patent: 40 29 162 (1992-03-01), None
patent: 198 01 658 (1999-02-01), None
European Search Report for EP 03 25 5341 completed on Nov. 5, 2004.
Burroughs C. J. et al.: “Programmable 1 Volt DC Voltage Standard” Precision Electromagnetic Measurements Digest, 1998 Conference on Washington, DC, USA Jul. 6-10, 1998, New York, NY, USA, IEEE, US, Jul. 6, 1998, pp. 548-549.
Ishizaki Mayumi
Shoji Akira
Yamamori Hirotake
National Institute of Advanced Industrial Science and Technology
Zweizig Jeffrey
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