caa a22 4500 477124674 CHVBK 20180405111646.0 cr unu---uuuuu 170330e19970201xx s 000 0 eng 10.1007/BF02677922 doi (NATIONALLICENCE)springer-10.1007/BF02677922 Low noise SIS mixer for 230 GHz receivers of plateau de bure interferometer [Elektronische Daten] [A. Karpov, J. Blondel, K. Gundlach, D. Billion-Pierron] We present a SIS mixer developed for 200 - 250 GHz band receivers of Plateau de Bure Interferometer. We demonstrate the minimum DSB receiver noise of 20 K at 220 GHz. The average receiver noise of 25 K is possible in 200 - 250 GHz range. The receiver conversion gain and output noise instability of 10−4 on the time scale of 1 minute is comparable with the Shottky receivers performance. The minimum measured SIS mixer noise of about 10 K is close to the quantum limit. The waveguide SIS mixer with a single backshort has two junction array with inductively tuned junctions. The Nb/Al Oxide/Nb SIS junctions are 2.24 µm2 each with the Josephson critical current density of 3.2 KA/cm2. The thermal properties of the SIS mixer are studied. The mixer band of the low noise operation is in a good agreement with the design requirements. Plenum Publishing Corporation, 1997 superconductors nationallicence Nb nationallicence SIS junction nationallicence SIS mixer nationallicence SIS receiver nationallicence low noise nationallicence millimeter waves nationallicence radioastronomy nationallicence Karpov A. Institut de Radioastronomie Millimétrique, Domaine Universitaire de Grenoble France, 300, rue de la Piscine aut Blondel J. Institut de Radioastronomie Millimétrique, Domaine Universitaire de Grenoble France, 300, rue de la Piscine aut Gundlach K. Institut de Radioastronomie Millimétrique, Domaine Universitaire de Grenoble France, 300, rue de la Piscine aut Billion-Pierron D. Institut de Radioastronomie Millimétrique, Domaine Universitaire de Grenoble France, 300, rue de la Piscine aut International Journal of Infrared and Millimeter Waves Kluwer Academic Publishers-Plenum Publishers 18/2(1997-02-01), 301-317 0195-9271 18:2<301 1997 18 10762 https://doi.org/10.1007/BF02677922 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02677922 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Karpov A. Institut de Radioastronomie Millimétrique, Domaine Universitaire de Grenoble France, 300, rue de la Piscine aut NATIONALLICENCE 700 1- Blondel J. Institut de Radioastronomie Millimétrique, Domaine Universitaire de Grenoble France, 300, rue de la Piscine aut NATIONALLICENCE 700 1- Gundlach K. Institut de Radioastronomie Millimétrique, Domaine Universitaire de Grenoble France, 300, rue de la Piscine aut NATIONALLICENCE 700 1- Billion-Pierron D. Institut de Radioastronomie Millimétrique, Domaine Universitaire de Grenoble France, 300, rue de la Piscine aut NATIONALLICENCE 773 0- International Journal of Infrared and Millimeter Waves Kluwer Academic Publishers-Plenum Publishers 18/2(1997-02-01), 301-317 0195-9271 18:2<301 1997 18 10762 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer