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Ryo Nakano
at Japan Aerospace Exploration Agency
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Author
Publications (5)
SPIE Journal Paper | 19 April 2023
Holographic phase-retrieval method of near-field antenna pattern measurement for bolometer-array-equipped millimeter-wave telescopes
JATIS, Vol. 9, Issue 02, 028003, (April 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.9.2.028003
KEYWORDS: Antennas, Near field, Holography, Telescopes, Phase measurement, Holograms, Polarization, Detector arrays, Near field optics, Signal detection
SPIE Journal Paper | 12 April 2023
Wide-field polarization angle measurements of a LiteBIRD low-frequency telescope scaled antenna
Hayato Takakura, Yutaro Sekimoto, Junji Inatani, Shingo Kashima, Masahiro Sugimoto, Ryo Nakano, Ryo Nagata
JATIS, Vol. 9, Issue 02, 024003, (April 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.9.2.024003
KEYWORDS: Polarization, Antennas, Telescopes, Angle measurement, Transmittance, Reflectors, Signal detection, Calibration, Polarizers, Wavefronts
Proceedings Article | 31 August 2022 Poster + Paper
A holographic phase-retrieval method of aperture-field evaluation for bolometer-array-equipped radio telescopes
Proceedings Volume 12190, 121901S (2022) https://doi.org/10.1117/12.2627582
KEYWORDS: Antennas, Sensors, Near field, Holograms, Telescopes, Holography, Phase measurement, Polarization, Signal detection, Network security
Proceedings Article | 29 August 2022 Presentation
Development of the low frequency telescope optics design for the CMB polarization satellite LiteBIRD
Frederick Matsuda, Tadayasu Dotani, Shingo Kashima, Ryo Nagata, Ryo Nakano, Kimihide Odagiri, Shugo Oguri, Yutaro Sekimoto, Hayato Takakura, Kazuya Watanuki, Keisuke Yoshihara
Proceedings Volume 12180, 121801T (2022) https://doi.org/10.1117/12.2629092
KEYWORDS: Polarization, Optical design, Telescopes, Satellites, Reflectors, Modulation, Tolerancing, Stray light, Reflector telescopes, Reflectivity
Proceedings Article | 27 August 2022 Poster + Paper
Straylight identification of a crossed-Dragone telescope by time-gated near-field antenna pattern measurements
Proceedings Volume 12180, 1218052 (2022) https://doi.org/10.1117/12.2627421
KEYWORDS: Antennas, Telescopes, Near field, Polarization, Reflectors, Optical design, Optical simulations, Fourier transforms, Geometrical optics, Optical testing
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