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Error correction circuits of comparators based on quasi-one junction SQUID(s) for high temperature superconductor

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7 Author(s)
Sugiyama, H. ; Int. Supercond. Technol. Center, Supercond. Res. Lab., Tokyo, Japan ; Wakana, H. ; Adachi, S. ; Horibe, M.
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The conventional quasi-one junction SQUID (QOS) as a comparator must have a loop inductance less than a threshold. Such a small loop inductance cannot be realized in high temperature superconductor (HTS) having larger sheet inductance. We suggest novel comparators based on QOS for HTS material, in which a few circuits are added to the QOS. The comparator operation is shown in analog simulation. It results in high accuracy below the sampling rate of 50 GS/s by use of typical YBCO junction parameters. The comparator operation at extremely high sampling rate over 100 GS/s is also feasible.

Published in:

Applied Superconductivity, IEEE Transactions on  (Volume:13 ,  Issue: 2 )