SAITO Masato

写真a

Title

Professor

Researcher Number(JSPS Kakenhi)

30335476
2 2
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Current Affiliation Organization 【 display / non-display 】

  • Duty   University of the Ryukyus   Faculty of Engineering   School of Engineering_Electronic and Communication Engineering Program   Professor  

  • Concurrently   University of the Ryukyus   Graduate School of Engineering and Science   Professor  

  • Concurrently   University of the Ryukyus   Graduate School of Engineering and Science   Interdisciplinary Intelligent Systems Engineering   Professor  

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University 【 display / non-display 】

  • 1992.04
    -
    1996.03

    Nagoya University   Faculty of Engineering   Department of Electrical, Electronic, and Electronic and Information Engineering   Graduated

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Graduate School 【 display / non-display 】

  • 1996.04
    -
    1998.03

    Nagoya University  Graduate School, Division of Engineering  Department of Electronic and Information Engineering  Doctor's Course (first term)  Completed

  • 1998.04
    -
    2001.03

    Nagoya University  Graduate School, Division of Engineering  Department of Electronic and Information Engineering  Doctor's Course (second term)  Completed

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Study abroad experiences 【 display / non-display 】

  • 2007.04
    -
    2008.03

    Department of Electrical and Electronic Engineering, The University of Melbourne, Visiting Researcher  

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Academic degree 【 display / non-display 】

  • Nagoya University -  Ph. D (Enginnering)

  • Nagoya University -  Master of Science in Engineering

  • Nagoya University -  Bachelor of Science in Engineering

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External Career 【 display / non-display 】

  • 2001.04
    -
    2007.03

    Graduate School of Information Science, Nara Institute of Science and Technology, Assistant Professor  

  • 2006.04
    -
    2007.03

    Department of Economics, Osaka Sangyo University  

  • 2007.04
    -
    2010.03

    Graduate School of Information Science, Nara Institute of Science and Technology, Assistant Professor  

  • 2009.04
    -
    2010.03

    Department of Economics, Osaka Sangyo University  

  • 2010.04
    -
    2017.03

    Department of Electrical and Electronics Engineering, University of the Ryukyus, Associate Professor  

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Affiliated academic organizations 【 display / non-display 】

  • 1995.12
    -
    Now
     

    The Institute of Electronics, Information and Communication Engineers 

  • 1997.01
    -
    Now
     

    The Institute of Electrical and Electronics Engineers 

  • 2011.05
    -
    Now
     

    The Institute of Electronics, Information and Communication Engineers    Member of Technical Committee on Wideband System

  • 2013.05
    -
    Now
     

    The Institute of Electronics, Information and Communication Engineers    Member of Technical Committee on Satellite Communications

  • 2009.05
    -
    2011.05
     

    The Institute of Electronics, Information and Communication Engineers    Secretary of Technical Committee on Wideband System

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Research Interests 【 display / non-display 】

  • Multiple-Input Multiple-Output (MIMO)

  • Orthogonal Frequency Division Multiplexing (OFDM)

  • Stochastic Resonance

  • Antenna Pattern Multiplexing

  • Code Division Multiple Access (CDMA)

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Research Areas 【 display / non-display 】

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Communication and network engineering

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Acquisition of a qualification 【 display / non-display 】

  • Radio Operator License

  • Software Design & Development Engineer/Information Processing Engineer, Class 1

  • TOEIC（730）

  • Land Radio Engineer (1-2 class)

  • Land Special Radio Engineer (1-3 class)

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Research Theme 【 display / non-display 】

  • MIMO communication systems using periodially time-variable directivity antenna

  • Enhancement of achievable rate of multi-hop multi-carrier systems

  • The effect of non-linear amplifier on CDMA systems

  • Cellular systems based on multi-route and multi-hop networks

  • Study on efficient packet communication using Qnasi Synchronous CDMA.

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Published Papers 【 display / non-display 】

  • Derivation of Reactance Time Function and Diversity Analysis for Two-Element ESPAR Antenna

    Anand Mohan Gupta, Masato Saito

    IEICE Transactions on Communications ( 電子情報通信学会 )  E109-B ( 8 )   2026.08 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

  • Relative Angle of Arrival Estimation in Multipath Channels with Omnidirectional Antenna

    Koki Morita, Masato Saito, Takaya Yamazato, Hideki Omote, Akihiro Sato, Sho Kimura

    IEICE Communications Express ( 電子情報通信学会 )    2026 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

  • Dynamic Pattern Generation of a Two-Element ESPAR Antenna Using Reactance Time Function

    Anand Mohan Gupta, Masato Saito

    Proceedings of 2025 International Symposium on Antennas and Propagation (ISAP) ( IEEE )    2025.10 [ Peer Review Accepted ]

    Type of publication: Research paper (international conference proceedings)

    　View Summary

    This paper proposes a dynamic antenna pattern generation method for a two-element Electronically Steerable Passive Array Radiator (ESPAR) antenna using a time-varying reactance function. The front-to-back ratio (FBR) behavior was first analyzed for different inter-element spacings. The λ/16 spacing was identified as optimal due to its wide FBR dynamic range. An analytical reactance time function was then derived to achieve smooth periodic variation of the antenna pattern. Numerical evaluations confirmed that the design enables continuous pattern control, supporting compact diversity antennas for wireless communication systems.

    • Access this article
      DOI

  • Performance Analysis of an I-Shaped Slots Array Antenna for mmWave 5G Communications

    Moynul Hasan Akash, Masato Saito

    Proceedings of 2025 International Symposium on Antennas and Propagation (ISAP) ( IEEE )    2025.10 [ Peer Review Accepted ]

    Type of publication: Research paper (international conference proceedings)

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    A microstrip patch array antenna is designed and analyzed for mmWave 5G communications. The array consists of two patch elements, each incorporating three I-shaped slots on its surface. Both the patches and the ground plane are made of lossy copper. Rogers RT/duroid 5880, a substrate with a dielectric constant of 2.2, is employed. The proposed antenna can operate in dual bands; the first band ranges from 40.9 GHz and 45.4 GHz, offering a bandwidth of 4.59 GHz, while the second band ranges from 56.6 GHz to 57.6 GHz, with a bandwidth of 0.98 GHz. Moreover, the array antenna is fed using a T-shaped feed line. The overall results, including the S11 characteristics, far-field characteristics, and VSWR, are evaluated in comparison with those obtained using the FR4 substrate and similar previous studies.

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  • A experimental study on reception of 2-by-2 SFBC-MIMO-OFDM signal using noise and 1bit ADC

        2025.09

    Type of publication: Research paper (other science council materials etc.)

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Books 【 display / non-display 】

  • Array Pattern Optimization

    Masato Saito ( Part: Allotment Writing ,  Antenna Pattern Multiplexing for Enhancing Path Diversity )

    IntechOpen  2020.03

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Other Papers 【 display / non-display 】

  • Sensor Networks

    Journal of Japan Society for Fuzzy Theory and Intelligent Informatics ( Japan Society for Fuzzy Theory and intelligent informatics )  18 ( 5 )   2006

     

    DOI Open Access

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Presentations 【 display / non-display 】

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Industrial Property 【 display / non-display 】

  • Receiver

    Industrial Property No 特願2018-001547  (2018.01.09)

    Unexpectedly No 特開2018-160887  (2018.10.11)

    Patent No 特許第7150298号  (2022.09.30)

    Masato Saito

    J-GLOBAL

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Other Research Activities 【 display / non-display 】

  • Editor

    Editing academic journals etc. 

    2019.06
    -
    2021.06

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    Editor of The Institute of Electronics, Information and Communication Engineers Transactions on Fundamentals.

  • Editor

    Editing academic journals etc. 

    2021.06
    -
    2022.06

    　View Summary

    The Institute of Electronics, Information and Communication Engineers

  • Editor

    Editing academic journals etc. 

    2018.06
    -
    2019.05

    　View Summary

    The Institute of Electronics, Information and Communication Engineers

  • Ph. D thesis examiner

    Other Research Activities 

    2019.05
    -
    2019.07

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    Ph. D. thesis examiner of a Ph. D. candidate of Queensland University of Technology, Australia.

  • Editor

    Editing academic journals etc. 

    2018.06
    -
    2022.05

    　View Summary

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

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Academic Awards 【 display / non-display 】

  • IEICE Engineering Sciences Society Editor-in-Chief in Communications Field

    2021.09.15   IEICE  

    Winner: Masato Saito

  • IEICE Communications Society:Distinguished Contributions Award

    2016.09.21   IEICE Communications Society  

    Winner: Masato Saito

  • IEICE Kyushu Section Gakuseikai Encouragement award

    2014.01   IEICE Kyushu Section  

    Winner: Wataru Arita

  • IEICE Kyushu Section Gakuseikai Encouragement award

    2014.01   IEICE Kyushu Section  

    Winner: Keisuke Fukami

  • IEEE VTS Japan 2012 Young Researcher's Encouragement Award

    2012.09.03   IEEE VTS Japan  

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Grant-in-Aid for Scientific Research 【 display / non-display 】

  • Grant-in-Aid for Scientific Research(B)

    Project Year: 2024.04  -  2029.03 

    Investigator(s): Masato Saito  Member: Takaya Yamazato

    Direct: 14,300,000 (YEN)  Overheads: 4,290,000 (YEN)  Total: 18,590,000 (YEN)

  • Grant-in-Aid for Scientific Research(C)

    Project Year: 2023.04  -  2026.03 

    Investigator(s): Tadahiro Wada  Member: Masato Saito

    Direct: 3,600,000 (YEN)  Overheads: 1,080,000 (YEN)  Total: 4,680,000 (YEN)

  • MIMO-OFDM Receiver using One-Bit Analog-Digital Converter Utilizing Noise

    Grant-in-Aid for Scientific Research(B)

    Project Year: 2020.04  -  2024.03 

    Investigator(s): Takaya Yamazato  Member: Masato Saito

    Direct: 13,700,000 (YEN)  Overheads: 4,110,000 (YEN)  Total: 17,810,000 (YEN)

  • Antenna Pattern Multiplexing Based on Fusion of Variable Directivity Antenna and Signal Multiplexing Technology

    Grant-in-Aid for Scientific Research(C)

    Project Year: 2020.04  -  2023.03 

    Investigator(s): Masato Saito 

    Direct: 3,300,000 (YEN)  Overheads: 990,000 (YEN)  Total: 4,290,000 (YEN)

  • Grant-in-Aid for Young Scientists(B)

    Project Year: 2009.04  -  2011.03 

    Direct: 1,600,000 (YEN)  Overheads: 480,000 (YEN)  Total: 2,080,000 (YEN)

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Joint Research activities 【 display / non-display 】

  • Power consumption reduction of satellite and UAV communications

    Project Year: 2023.04  -  2024.02 

    Investigator(s): Masato Saito  Member: Hiraku Okada  Offer Organization: Nagoya University Institute of Materials and Systems for Sustainability

    Direct: 200,000 (YEN)  Overheads: 0 (YEN)  Total: 200,000 (YEN)

  • Power consumption reduction of satellite and UAV communications

    Project Year: 2022.04  -  2023.02 

    Investigator(s): Masato Saito  Member: Hiraku Okada  Offer Organization: Nagoya University Institute of Materials and Systems for Sustainability

    Direct: 200,000 (YEN)  Overheads: 0 (YEN)  Total: 200,000 (YEN)

  • Power consumption reduction of satellite and UAV communications

    Project Year: 2021.04  -  2022.02 

    Investigator(s): Masato Saito  Member: Hiraku Okada  Offer Organization: Nagoya University Institute of Materials and Systems for Sustainability

    Direct: 300,000 (YEN)  Overheads: 0 (YEN)  Total: 300,000 (YEN)

  • Receive antennas for super low power consumption wireless systems

    Project Year: 2020.04  -  2021.02 

    Investigator(s): Masato Saito  Member: Hiraku Okada  Offer Organization: Nagoya University Institute of Materials and Systems for Sustainability

    Direct: 300,000 (YEN)  Overheads: 0 (YEN)  Total: 300,000 (YEN)

  • Receive antennas for super low power consumption wireless systems

    Project Year: 2019.04  -  2020.02 

    Investigator(s): Masato Saito  Member: Hiraku Okada  Offer Organization: Nagoya University Institute of Materials and Systems for Sustainability

    Direct: 300,000 (YEN)  Overheads: 0 (YEN)  Total: 300,000 (YEN)

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SDGs 【 display / non-display 】

  • アンテナパターン多重技術に関する研究

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Social Activity 【 display / non-display 】

  • 2024.02
    　
    　

  • 2025.05
    　
    　

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Academic Activities 【 display / non-display 】

  • 総務省沖縄総合通信事務所  （ 総務省沖縄総合通信事務所 ）

    2024.2
    　
    　

    種別： Scientific advice/Review 

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    電波適正利用推進員選考会において推進員の承認を行った．

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