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  • Keynote by Prof. Makoto Ando

    Prof. Makoto Ando
    Tokyo Institute of Technology, Japan

    Title: Design of planar waveguide arrays and system implementation
    – Planetary Exploration and B5G Heterogeneous Network –

    This talk introduces 40 years of personal experience in radio science; diffraction analysis, antenna design and system implementation, together with academic and social activities for B5G.

    Unique planar waveguide slot arrays have been developed in Tokyo Institute of Technology. The low loss and high gain characteristics stand out in high frequency. The design started from the single layer waveguide with traveling wave excitation with minimized conductor loss. One and still going application is the radial line slot antenna (RLSA) in 32GHz on board of JAXA Asteroid explorer "Hayabusa 2" which came back to earth on 6 December 2020.

    In 5G and beyond, millimeter and even terahertz frequency will be utilized for wider bandwidth. To overcome the bandwidth limitation of traveling wave arrays, we extended them to multiple layers with corporate feed. Next implementation is the proof-of-concept demonstration of the millimeter wave heterogenous network systems named as "Tokyo Tech Wireless Fiber Project" supported by Ministry of Internal Affairs and Communications (MIC), JAPAN. The compact range communication in 60GHz and the direction division duplex system in 40GHz were developed where high gain waveguide planar arrays were fully utilized for big file transfer.

    Latest development of arrays of these types would also be mentioned in the light of higher frequency wave technologies in communication networks, which also includes the Beyond 5G R&D Promotion Project issued in 2020 by MIC.

    Makoto Ando received his doctorate of engineering in electrical engineering from Tokyo Institute of Technology in 1979. He subsequently joined NTT and was engaged in the development of antennas for satellite communication. He moved to Tokyo Institute of Technology in 1982 and served as a Professor and 2015-2018 Executive Vice President for Research. In 2018, he moved to National Institute of Technology (KOSEN) and served as the senior executive director until his retirement in 2020. Since 2020, He is the Program Director of Strategic Information and Communications R&D Promotion Programme (SCOPE) of Ministry of Internal Affairs and Communications, Japan (MIC). He also chairs the selection committee for Beyond 5G R&D Promotion Project issued by MIC.

    His main interests have been field and waves in radio science, especially high frequency diffraction theory, the design of waveguide planar arrays, and millimeter-wave antennas for future wireless communication. He plays a leading role in the promotion of a wide range of applications of millimeter-wave wireless communications in Japan.

    His international activities have included service as 2009 president of the IEEE Antennas and Propagation Society (AP-S), 2018-2019 President of The Institute of Electronics, Information and Communication Engineers (IEICE), Japan and 2017-2021 president of the International Union of Radio Science (URSI). Professor Ando is a fellow of IEEE, URSI and an honorary member of IEICE.

    Recognized by the IEICE with the Distinguished Achievement and Contributions Award, he has also received the Inoue Prize for Science, both the Meritorious Award on Radio and the Meritorious Award on Contributions to the Promotion of Computerization from the Minister of Internal Affairs and Communications (MIC) and the 2016 Culture Award from the Japan Broadcasting Corporation (NHK).

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