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Performance of a high Tc superconducting ultralow-loss microwave stripline filterThe successful fabrication is reported of a five-pole interdigital stripline filter made of the 93 K superconductor Y1Ba2Cu3O(y) coated on a silver substrate, with a center frequency of 8.5 GHz and an extremely high rejection ratio of 80 dB. The lowest insertion loss measured was 0.1 dB at 12 K, with a return loss better than 16 dB, representing significant improvements over a similar Cu filter, and comparable to low Tc filters. The insertion loss appears to be limited by extrinsic factors such as tuning mismatch and joint losses, and not by the superconducting material losses.
Document ID
19910043336
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Zahopoulos, C.
(Northeastern Univ. Boston, MA, United States)
Sridhar, S.
(Northeastern University Boston, MA, United States)
Bautista, J. J.
(Northeastern Univ. Boston, MA, United States)
Ortiz, G.
(JPL Pasadena, CA, United States)
Lanagan, M.
(Argonne National Laboratory IL, United States)
Date Acquired
August 14, 2013
Publication Date
March 4, 1991
Publication Information
Publication: Applied Physics Letters
Volume: 58
ISSN: 0003-6951
Subject Category
Electronics And Electrical Engineering
Accession Number
91A27959
Funding Number(s)
CONTRACT_GRANT: NSF ECS-88-11254
Distribution Limits
Public
Copyright
Other

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