• DocumentCode
    925673
  • Title

    Superconducting Tunnel Junctions As Mixers at 115 Ghz

  • Author

    Dolan, Gerald J. ; Linke, Richard A. ; Sollner, T. C L Gerhard ; Woody, David P. ; Phillips, T.G.

  • Volume
    29
  • Issue
    2
  • fYear
    1981
  • fDate
    2/1/1981 12:00:00 AM
  • Firstpage
    87
  • Lastpage
    91
  • Abstract
    Superconducting tunnel junctions have been used as the nonlinear element for mixing at a signal frequency of 115 GHz. The experimental results are compared with predictions of a theoretical analysis based on the quantum theory of mixing of J. R. Tucker. Qualitative agreement is obtained and suggestions are made for quantitative reconciliation. The junctions were small area (≡0.4mu m2) with normal resistances of 60 to 100 omega and capacitance approximately 20 fF. Measured sensitivity (T/ sup SSBMXR=62 K, Lc=7.6 dB) implies receiver noise temperatures superior to the best receivers now in use at this frequency.
  • Keywords
    Capacitance; Frequency; Josephson junctions; Local oscillators; Observatories; Quantum mechanics; Superconducting device noise; Temperature; Tunneling; Voltage;
  • fLanguage
    English
  • Journal_Title
    Microwave Theory and Techniques, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9480
  • Type

    jour

  • DOI
    10.1109/TMTT.1981.1130300
  • Filename
    1130300
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=925673