• DocumentCode
    2095623
  • Title

    Low noise log-periodic SIS open structure receiver at 180 and 305 GHz

  • Author

    Fernández, José A López ; Lehnert, T. ; Mattiocco, F.

  • Author_Institution
    Centro Astronómico de Yebes Apartado de Correos 148, 19080 Guadalajara, Spain TEL. +34 11 290311; FAX: +34 11 290063, e-mail: Lopez@cay.es
  • fYear
    1993
  • fDate
    6-10 Sept. 1993
  • Firstpage
    944
  • Lastpage
    946
  • Abstract
    Two open structure heterodyne receivers have been designed and tested at 180 and 305 GHz. The RF signal is coupled via a seven teeth optimized log-periodic planar antenna to the mixer. The beam efficiency of the antenna is 70%. The coupling efficiency to the fundamental gaussian mode is higher than 90%. The mixer incorporates a series array of two SIS Nb-Al/AlOx-Nb junctions. Double side band noise temperatures of 95 K at 190 GHz and 160 K at 305 GHz have been measured.
  • Keywords
    Antenna measurements; Frequency; Lenses; Log periodic antennas; Millimeter wave technology; Planar arrays; Polarization; Substrates; Teeth; Temperature;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Microwave Conference, 1993. 23rd European
  • Conference_Location
    Madrid, Spain
  • Type

    conf

  • DOI
    10.1109/EUMA.1993.336777
  • Filename
    4136819
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2095623