In this paper we will present the design and realization of a double sideband SIS heterodyne mixer for the frequency range of 780-950 GHz. A NbTiN high Tc superconductor in combination with aluminum is used for a SIS junction tuning circuit. We use a double side waveguide probe with a fixed backshort tuner design which was optimized by means of a 3D EM-modeling software. Compact mechanical envelope of the mixer allows for a combination of several units in a focal plane array. We will present results of instantaneous bandwidth measurement for seven mixer units and compare it with theoretical predictions. We also present a heterodyne sensitivity test results for these mixers with the best achieved DSB mixer noise temperature of about 250 K (physical temperature 4.2 K) which is only several times higher than a quantum noise limit for these frequencies.


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    Titel :

    A Waveguide NbTiN SIS Mixer for THz Array Applications


    Beteiligte:
    Baryshev, A. M. (Autor:in) / Mena, F. P. (Autor:in) / Hesper, R. (Autor:in) / Zijlstra, T. (Autor:in) / Lodewijk, C. F. J. (Autor:in) / Wild, W. (Autor:in) / Klapwijk, T. M. (Autor:in)


    Erscheinungsdatum :

    2006-09-01


    Format / Umfang :

    1203833 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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