Dr. Shohei Ezaki Profile

Dr. Shohei Ezaki

at National Astronomical Observatory of Japan

SPIE Involvement:

Author

Publications (3)

Proceedings Article | 16 August 2024 Presentation + Paper

Presentation + Paper

ALMA Band 8 version2 receiver upgrade project

Takafumi Kojima, Tetsuhiro Minamidani, Ryo Sakai, Hiroaki Imada, Keiko Kaneko, Sho Masui, Kazunori Uemizu, Kazumasa Makise, Akihira Miyachi, Shohei Ezaki, Tomonori Tamura, Shun Ishii, Bunyo Hatsukade

Proceedings Volume 13102, 131020K (2024) https://doi.org/10.1117/12.3021139

KEYWORDS: Receivers, Design, Mirrors, Reflection, Waveguides, Double sideband modulation, Diagnostics, Radio frequency circuits, Polarization, Transformers

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Proceedings Article | 13 December 2020 Presentation + Paper

Presentation + Paper

An SIS-mixer-based amplifier for multi-pixel heterodyne receivers

Yoshinori Uzawa, Takafumi Kojima, Yuto Kozuki, Yasunori Fujii, Akihira Miyachi, Tomonori Tamura, Shohei Ezaki, Wenlei Shan

Proceedings Volume 11453, 114530Q (2020) https://doi.org/10.1117/12.2563183

KEYWORDS: Amplifiers, Heterodyning, Receivers, Microwave radiation, Cryogenics, Frequency conversion

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Proceedings Article | 9 July 2018 Presentation + Paper

Presentation + Paper

Planar superconductor-insulator-superconductor mixer array receivers for wide field of view astronomical observation

W. Shan, S. Ezaki, J. Liu, S. Asayama, T. Noguchi, S. Iguchi

Proceedings Volume 10708, 1070814 (2018) https://doi.org/10.1117/12.2311933

KEYWORDS: Waveguides, Polarization, Antennas, Receivers, Silicon, Bridges, Capacitance, Astronomy, Metals, Resistance

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