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

Author

Sugiyama, Hideyuki ; Wakana, Hironori ; Adachi, Seiji ; Horibe, Masahiro ; Ishimaru, Yoshihiro ; Tarutani, Yoshinobu ; Tanabe, Keiichi

Author_Institution

Int. Supercond. Technol. Center, Supercond. Res. Lab., Tokyo, Japan

Volume

13

Issue

2

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

405

Lastpage

408

Abstract

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.

Keywords

SQUIDs; barium compounds; comparators (circuits); equivalent circuits; error correction; high-temperature superconductors; inductance; superconducting logic circuits; yttrium compounds; HTS material; YBCO junction parameters; YBaCuO; error correction circuits; quasi-one junction SQUID comparators; sheet inductance; Analog-digital conversion; Circuits; Clocks; Error correction; High temperature superconductors; Inductance; SQUIDs; Sampling methods; Switches; Uncertainty;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2003.813875

Filename

1211627