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Proceedings Paper

40- to 50-GHz array receiver with tunerless SIS mixers
Author(s): Takeshi Ohno; Atsushi Miyazaki; Masato Tsuboi; Takashi Kasuga; Takashi Noguchi; Akihiro Sakamoto
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Paper Abstract

We developed a 40 - 50 GHz array receiver which has six feed horns (2 X 3 array) and six superconducting-insulating- superconducting (SIS) mixers. We used tunerless SIS mixers to make the tuning system simple and to achieve the high stability. The receiver system is designed as a sophisticated tool for continuum observation of the Sunyaev-Zel'dovich effect toward clusters of galaxies. The receiver noise temperature is 20 - 30 K. The instantaneous band width is 700 MHz. This system is installed on the focal plane platform of the Nobeyama 45-m telescope. We did a test observation to evaluate the performance of the receiver system. The estimated DSB system noise temperature were 110 - 170 K at 43 GHz. The aperture efficiency and the main-lobe efficiency of this system were 0.4 - 0.6 and 0.5 - 0.9, respectively.

Paper Details

Date Published: 13 November 1998
PDF: 4 pages
Proc. SPIE 3465, Millimeter and Submillimeter Waves IV, (13 November 1998); doi: 10.1117/12.331199
Show Author Affiliations
Takeshi Ohno, Ibaraki Univ. (Japan)
Atsushi Miyazaki, Ibaraki Univ. (Japan)
Masato Tsuboi, Ibaraki Univ. (Japan)
Takashi Kasuga, Hosei Univ. (Japan)
Takashi Noguchi, Nobeyama Radio Observatory (Japan)
Akihiro Sakamoto, Nobeyama Radio Observatory (Japan)


Published in SPIE Proceedings Vol. 3465:
Millimeter and Submillimeter Waves IV
Mohammed N. Afsar, Editor(s)

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