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Effect of an applied magnetic field on the performance of a SIS receiver near 300 GHzA superconductor-insulator-superconductor (SIS) receiver has been successfully constructed and tested for operation at 265 - 280 GHz using 1 micron/sq area Nb-AlO(x)-Nb tunnel junctions fabricated at Stony Brook. The best performance to date is a double sideband (DSB) receiver noise temperature of 129 K at 278 GHz. It is found that suppression of the Josephson pair currents with a magnetic field is essential for good performance and a stable dc bias point. Fields as high as 280 gauss have been used with no degradation of mixing performance. The improvement in the intermediate frequency output stability with progressively increasing magnetic fields is illustrated.
Document ID
19920053215
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Mallison, W. H.
(NASA Headquarters Washington, DC United States)
De Zafra, R. L.
(New York, State University Stony Brook, United States)
Date Acquired
August 15, 2013
Publication Date
May 1, 1992
Publication Information
Publication: International Journal of Infrared and Millimeter Waves
Volume: 13
Issue: 5 Ma
ISSN: 0195-9271
Subject Category
Communications And Radar
Accession Number
92A35839
Funding Number(s)
CONTRACT_GRANT: NAGW-353
CONTRACT_GRANT: NSF ATM-84-19733
Distribution Limits
Public
Copyright
Other

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