DocumentCode
1078930
Title
A three Josephson junction direct coupled isolation device
Author
Wang, Tsing-Chow ; Josephs, Richard M. ; Stein, Barry F. ; Young, Peter L. ; Flannery, William E.
Author_Institution
Sperry Univac, Blue Bell, PA
Volume
29
Issue
3
fYear
1982
fDate
3/1/1982 12:00:00 AM
Firstpage
414
Lastpage
417
Abstract
A new type of current switching logic device using three Josephson junctions is described. This device allows the simultaneous optimization of both the gain and the operating margin. It shows an enhanced threshold curve compared with that of the Direct Coupled Logic (DCL) isolation device and the Josephson Atto-Weber Switch (JAWS). Design optimization and simulation results are presented. The device shows an almost square current transfer curve indicating good input and output isolation. The dependence of delay on fan-out is also discussed. For a fan-in of 1 and a fan-out of 3, the switching delay is 38 ps with a power dissipation of 3.6 µW.
Keywords
Coupling circuits; Delay; Design optimization; Josephson junctions; Logic devices; Power dissipation; Resistors; Resonance; Switches; Zero voltage switching;
fLanguage
English
Journal_Title
Electron Devices, IEEE Transactions on
Publisher
ieee
ISSN
0018-9383
Type
jour
DOI
10.1109/T-ED.1982.20717
Filename
1482214
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