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Open structure log-periodic SIS receivers at 180 and 305 GHz

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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 log-periodic planar antenna to the mixer. The beam efficiency of the antenna is 65 %. 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. Photolithographical techniques have been employed to fabricate the antennas and the junctions. Double side band noise receiver temperatures of 95 K at 190 GHz and 160 K at 305 GHz have been measured.

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Authors and Affiliations

  1. IRAM, Institut de Radioastronomie Millimétrique, 300 Rue de la Piscine, 38406, St. Martin d'Hères, France

    José Antonio López Fernández, Thomas Lehnert & François Mattiocco

  2. Currently at the Centro Astronómico de Yebes, Apartado de Correos 148, E-19080, Guadalajara, Spain

    José Antonio López Fernández

Authors
  1. José Antonio López Fernández
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  2. Thomas Lehnert
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  3. François Mattiocco
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Fernández, J.A.L., Lehnert, T. & Mattiocco, F. Open structure log-periodic SIS receivers at 180 and 305 GHz. Int J Infrared Milli Waves 14, 1495–1507 (1993). https://doi.org/10.1007/BF02096211

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  • DOI: https://doi.org/10.1007/BF02096211

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