• DocumentCode
    1025815
  • Title

    A 100 GHz SIS mixer of Nb/Al-AlOx/Nb junctions

  • Author

    Inatani, J. ; Kasuga, T. ; Sakamoto, A. ; Iwashita, H. ; Kodaira, S.

  • Author_Institution
    Nobeyama Radio Observatory, Nobeyama, Japan
  • Volume
    23
  • Issue
    2
  • fYear
    1987
  • fDate
    3/1/1987 12:00:00 AM
  • Firstpage
    1263
  • Lastpage
    1266
  • Abstract
    We have made an all-refractory SIS mixer with four Nb/Al-AlOx/Nb junctions connected in series. The mixer is designed to operate at 80-120 GHz. The area of each junction is 2.5 × 2.5 μm2. Both these SIS junctions and a mm-wave choke filter are fabricated on a crystalline quartz substrate. These Nb/Al-AlOx/Nb junctions have shown ideal dc-characteristics and clear photon-assisted tunneling steps. RF measurements were made with a mixer mount which had two mechanical tuners. The conversion loss was less than 9 dB for 75-95 GHz. The minimum value was 8 dB. This value will be drastically improved by optimizing the normal resistance of the SIS junctions.
  • Keywords
    Millimeter-wave mixers; Superconductor insulator superconductor devices; Crystallization; Electrical resistance measurement; Filters; Inductors; Mechanical variables measurement; Niobium; Photonic crystals; Radio frequency; Tuners; Tunneling;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1987.1065164
  • Filename
    1065164
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1025815