13 November 1998 40- to 50-GHz array receiver with tunerless SIS mixers
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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.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Takeshi Ohno, Takeshi Ohno, Atsushi Miyazaki, Atsushi Miyazaki, Masato Tsuboi, Masato Tsuboi, Takashi Kasuga, Takashi Kasuga, Takashi Noguchi, Takashi Noguchi, Akihiro Sakamoto, Akihiro Sakamoto, "40- to 50-GHz array receiver with tunerless SIS mixers", Proc. SPIE 3465, Millimeter and Submillimeter Waves IV, (13 November 1998); doi: 10.1117/12.331199; https://doi.org/10.1117/12.331199


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