Unspecified Ryo Sakai Profile

Ryo Sakai

at National Astronomical Observatory of Japan

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Publications (3)

Proceedings Article | 13 December 2020 Presentation + Paper

Wideband technology development to increase the RF and instantaneous bandwidth of ALMA receivers

Takafumi Kojima, Kazunori Uemizu, Hitoshi Kiuchi, Tomonori Tamura, Keiko Kaneko, Ryo Sakai, Akihira Miyachi, Wenlei Shan, Yoshinori Uzawa, Alvaro Gonzalez, Matthias Kroug, Takeshi Sakai

Proceedings Volume 11453, 114530P (2020) https://doi.org/10.1117/12.2561240

KEYWORDS: Receivers, Radio frequency circuits, Astronomy, Observatories, Heterodyning, Waveguides

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Proceedings Article | 13 December 2020 Poster + Paper

Optical design of the 1.85-m mm-submm telescope in 210–375 GHz band

Yasumasa Yamasaki, Sho Masui, Masanari Okawa, Koki Yokoyama, Taisei Minami, Shota Ueda, Yutaka Hasegawa, Atsushi Nishimura, Toshikazu Onishi, Hideo Ogawa, Nozomi Okada, Kimihiro Kimura, Alvaro Gonzalez, Takafumi Kojima, Keiko Kaneko, Ryo Sakai

Proceedings Volume 11453, 114534H (2020) https://doi.org/10.1117/12.2561955

KEYWORDS: Optical design, Telescopes, Receivers, Mirrors, Clouds, Reflectors, Antennas, Optical instrument design, Device simulation, Optical simulations

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Proceedings Article | 13 December 2020 Poster + Paper

Development of receiver optics for ALMA bands 1 and 2, and possible synergies with ngVLA

Álvaro González, Keiko Kaneko, Ryo Sakai, Takafumi Kojima, Yoshinori Uzawa

Proceedings Volume 11453, 114533S (2020) https://doi.org/10.1117/12.2561595

KEYWORDS: Receivers, Waveguides, Plastic lenses, Additive manufacturing, 3D printing, Astronomy, Observatories, Product engineering, Astronomical imaging, Optical fabrication equipment

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