Development of 86 GHz low-noise wideband receiver

Akira Kameyama; Shoki Kondo; Shuto Dakie; Nozomi Okada; Satoko Sawada-Satoh; Hideo Ogawa; Toshikazu Onishi; Yasumasa Yamasaki; Sho Masui; Kazuyoshi Sunada; Tomoaki Oyama; Shunsaku Suzuki; Yuji Ueno; Mareki Honma; Kazuyoshi Yamashita; Kazuhiro Hada; Shoko Koyama; Mieko Takamura

doi:10.1117/12.3019667

16 August 2024 Development of 86 GHz low-noise wideband receiver

Akira Kameyama, Shoki Kondo, Shuto Dakie, Nozomi Okada, Satoko Sawada-Satoh, Hideo Ogawa, Toshikazu Onishi, Yasumasa Yamasaki, Sho Masui, Kazuyoshi Sunada, Tomoaki Oyama, Shunsaku Suzuki, Yuji Ueno, Mareki Honma, Kazuyoshi Yamashita, Kazuhiro Hada, Shoko Koyama, Mieko Takamura

Author Affiliations +

Proceedings Volume 13102, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII; 1310229 (2024) https://doi.org/10.1117/12.3019667
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

VLBI Exploration of Radio Astrometry (VERA) is a VLBI facility operated by the National Astronomical Observatory of Japan. It comprises four 20 m radio telescopes located across the country. VLBI observations at 86 GHz allow us to explore the jet base of nearby active galactic nuclei. In recent years, the development of the 86 GHz receiver systems at the East Asia VLBI Network (EAVN) has started. Currently, only three Korea VLBI Network (KVN) antennas provide 86 GHz VLBI capability in the member stations of EAVN. The participation of VERA in the 86 GHz VLBI observations will boost resolution, sensitivity, and dynamic range. Therefore, we are developing a new 86 GHz low noise receiver system to be installed at VERA Mizusawa and Ishigaki stations. We are considering a cooled circular polarization receiver covering a wide frequency range of 67−116 GHz with the capability of cooling HEMT amplifiers. We are developing a room temperature 2 side band (2SB) system for down-converting signals in the 67−116 GHz band. Recently developed room-temperature mixers with an IF frequency over 25 GHz could cover most of the 67−116 GHz RF signals in a single observation. In this poster, we will discuss the development progress of the 2SB receiver and the design status of the cooling Dewar.

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Akira Kameyama, Shoki Kondo, Shuto Dakie, Nozomi Okada, Satoko Sawada-Satoh, Hideo Ogawa, Toshikazu Onishi, Yasumasa Yamasaki, Sho Masui, Kazuyoshi Sunada, Tomoaki Oyama, Shunsaku Suzuki, Yuji Ueno, Mareki Honma, Kazuyoshi Yamashita, Kazuhiro Hada, Shoko Koyama, and Mieko Takamura "Development of 86 GHz low-noise wideband receiver", Proc. SPIE 13102, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII, 1310229 (16 August 2024); https://doi.org/10.1117/12.3019667

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