Design and Operation of HTS 1:2 Switch Circuit

Author

Tsubone, Koji ; Wakana, Hironori ; Tarutani, Yoshinobu ; Adachi, Seiji ; Ishimaru, Yoshihiro ; Nakayama, Kohei ; Oshikubo, Yasuo ; Horibe, Osami ; Tanabe, Keiichi

Author_Institution

Supercond. Res. Lab., Tokyo

Volume

17

Issue

2

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

451

Lastpage

454

Abstract

A Single flux quantum (SFQ) one-to-two (1:2) switch circuit was designed and fabricated by using YBa₂Cu₃O_7-delta ramp-edge junction technology, and the logic operations were investigated. The circuit parameters were optimized by taking account of an I_c spread and a global I_c shift due to an operation temperature change and insufficient run-to-run reproducibility. In addition, the influence of the parasitic inductance on I_c margins was investigated by simulation. A test circuit including the 1:2 switch circuit was successfully operated at temperatures of 52 K-60 K. Finite dc supply current margins obtained at temperatures of 55 K-60 K were comparable to those determined by the simulation.

Keywords

barium compounds; high-temperature superconductors; superconducting logic circuits; superconducting thin films; switching circuits; yttrium compounds; YBa₂Cu₃O₇ - Interface; finite dc supply current margins; logic operations; parasitic inductance; ramp-edge junction; single flux quantum one-to-two switch circuit; test circuit; Circuit simulation; Circuit testing; Current supplies; High temperature superconductors; Inductance; Logic circuits; Logic design; Reproducibility of results; Switches; Switching circuits; 1:2 switch; High-temperature superconductors; SFQ circuits; superconducting devices;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2007.898634

Filename

4277770