Modeling of an ADC based on high-T/sub c/ QOJS comparators

Existing proposals for high temperature superconductor analog to digital converter (ADC) circuits suffer performance penalties because of the difficulty of fabricating devices with small and controlled inductances. The design of a quasi-one junction SQUID (QOJS) comparator for a high-T/sub c/ flash...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 1995-06, Vol.5 (2), p.2628-2631
Main Authors: Harnisch, T., Uhlmann, F.H., Topfer, H., Moore, D.F., Pauza, A.J., Lamacraft, K.
Format: Article
Language:English
Subjects:
Clocks
Critical current
Equations
High temperature superconductors
Inductance
Josephson junctions
Magnetic flux
SQUIDs
Superconducting magnets
Superconducting microwave devices
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Summary:Existing proposals for high temperature superconductor analog to digital converter (ADC) circuits suffer performance penalties because of the difficulty of fabricating devices with small and controlled inductances. The design of a quasi-one junction SQUID (QOJS) comparator for a high-T/sub c/ flash ADC is proposed and discussed. The inductances are calculated with the help of a three-dimensional field calculation program, and simulations on the QOJS-comparator are performed using a SPICE-type simulation program.< >
ISSN:1051-8223
1558-2515
DOI:10.1109/77.403129