Prof. Toshikazu Onishi Profile

Prof. Toshikazu Onishi

at Osaka Metropolitan Univ

SPIE Involvement:

Author

Publications (5)

Proceedings Article | 23 August 2024 Poster + Paper

A 1–50 MHz short dipole antenna for observing the 21 cm global signal on the Moon

Yasumasa Yamasaki, Takeru Matsumoto, Satoru Iguchi, Toshikazu Onishi, Toru Yamada, Daisuke Yamauchi, Fuminori Tsuchiya, Keitaro Takahashi, Naoki Isobe, Takahiro Iwata, Naoto Usami, Yutaro Sekimoto, Yasuyuki Miyazaki, Takanao Saiki, Osamu Mori, Tetsuo Yoshimitsu

Proceedings Volume 13092, 1309278 (2024) https://doi.org/10.1117/12.3018545

KEYWORDS: Antennas, Reflection, Receivers, Simulations, Dielectrics, Calibration, Absorption, Signal detection, Resistance

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Proceedings Article | 23 August 2024 Presentation + Paper

Lunar meter-wave telescope (TSUKUYOMI) as one of Japanese lunar plans

Satoru Iguchi, Toru Yamada, Yasumasa Yamasaki, Toshikazu Onishi, Daisuke Yamauchi, Fuminori Tsuchiya, Keitaro Takahashi, Takeru Matsumoto, Naoki Isobe, Takahiro Iwata, Naoto Usami, Yutaro Sekimoto, Yasuyuki Miyazaki, Takanao Saiki, Osamu Mori, Tetsuo Yoshimitsu

Proceedings Volume 13092, 130922L (2024) https://doi.org/10.1117/12.3018410

KEYWORDS: Antennas, Calibration, Signal detection, Cosmology, Astronomy, Telescopes, Design, Exoplanets, Spectroscopy, Absorption

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Proceedings Article | 23 August 2024 Poster + Paper

Low-frequency antenna design to observe the 21 cm global signal from the Dark Ages with the lunar telescope, TSUKUYOMI

Takeru Matsumoto, Yasumasa Yamasaki, Toshikazu Onishi, Satoru Iguchi, Toru Yamada, Daisuke Yamauchi, Fuminori Tsuchiya, Keitaro Takahashi, Naoki Isobe, Takahiro Iwata, Naoto Usami, Yutaro Sekimoto, Yasuyuki Miyazaki, Takanao Saiki, Osamu Mori, Tetsuo Yoshimitsu

Proceedings Volume 13092, 1309279 (2024) https://doi.org/10.1117/12.3018734

KEYWORDS: Antennas, Calibration, Resistance, Design, Capacitance, Simulations, Signal detection, Telescopes, Temperature metrology, Capacitors

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Proceedings Article | 16 August 2024 Poster + Paper

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

Proceedings Volume 13102, 1310229 (2024) https://doi.org/10.1117/12.3019667

KEYWORDS: Receivers, Waveguides, Telescopes, Signal attenuation, Quantum receivers, Design, Tunable filters, Optical isolators, Observatories, Cryocoolers

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Proceedings Article | 16 August 2024 Poster + Paper

Development of a wideband receiver for dual-band and dual-polarization observations in 230 and 345 GHz bands

Sho Masui, Sana Kawashita, Yasumasa Yamasaki, Yutaka Hasegawa, Takafumi Kojima, Takeru Matsumoto, Ikko Fujitomo, Yuma Nishikawa, Ryo Nakagawa, Hideo Ogawa, Toshikazu Onishi

Proceedings Volume 13102, 131022L (2024) https://doi.org/10.1117/12.3018561

KEYWORDS: Waveguides, Multiplexers, Phase shifts, Circular polarizers, Receivers, Polarization, Reflection, Prototyping, Telescopes, Phase measurement

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