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Tunnel-Junction Mixers Perform Well At 205 GHzSuperconductor-Insulator Superconductor (SIS) tunnel junctions made of NbN/MgO/NbN and Nb/AlOx/Nb, with cross-sectional areas of about 0.30 and 0.25 micrometer(Sup2) respectively, fabricated and tested for use as mixers at frequencies near 205 GHz. Cross sections must be small to make capacitances of devices acceptably small for operation at this frequency. NbN and Nb good materials choices as superconductors because of high energy gap, and mechanically and electrically rugged and chemically stable.
Document ID
19950065321
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Javadi, Hamid H. S. (Caltech)
Mcgrath, William R. (Caltech)
Cypher, Scott R. (Caltech)
Bumble, Bruce (Caltech)
Leduc, Henry G. (Caltech)
Hunt, Brian D. (Caltech)
Date Acquired
August 17, 2013
Publication Date
April 1, 1995
Publication Information
Publication: NASA Tech Briefs
Volume: 19
Issue: 4
ISSN: 0145-319X
Subject Category
Electronic Components And Circuits
Report/Patent Number
NPO-18419
Accession Number
95B10162
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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