A 110 GHz SIS receiver for radio astronomy

Details A 110 GHz SIS receiver for radio astronomy A 110 GHz SIS receiver for radio astronomy

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ijimw..11..717o&link_type=abstract

International Journal of Infrared and Millimeter Waves (ISSN 0195-9271), vol. 11, June 1990, p. 717-726.

Astronomy and Astrophysics

Astronomy

69

Frequency Response, Instrument Receivers, Radio Astronomy, Sis (Semiconductors), Tunnel Diodes, Microwave Spectrometers, Millimeter Waves, Radio Telescopes

Scientific paper

A 110 GHz superconductor insulator superconductor (SIS) tunnel junction receiver has been developed and used in regular astronomical observations on the 4m radio telescope at the Department of Astrophysics, Nagoya University. The SIS junction consists of a sandwich structure of Nb/AlOx/Nb, and is cooled to 4.2 K with a closed cycle He-gas refrigerator. The receiver exhibits a best double side band noise temperature of 23 + or - 2 K at 110 GHz. Additional measurements at 98-115 GHz indicate that the receiver has a good response over this input frequency range.

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