Updated on 2026/04/30

 
NAKAYAMA Daisuke
 
Scopus Paper Info
Total Paper Count: 17 Total Citation Count: 29 h-index: 3

The bar and line graphs display up to the most recent 20 years.

Affiliation
Faculty of Engineering Department of Electrical and Electronic Engineering
Job
Assistant Professor
External link

Research Interests

  • CubeSat

  • antenna

  • wireless communication

  • nano satellite

Research Areas

  • Frontier Technology (Aerospace Engineering, Marine and Maritime Engineering) / Aerospace engineering  / Satellite Engineering

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

Degree

  • 九州工業大学  -  博士（工学）   2023.03

Biography in Kyutech

  • 2026.04
     

    Kyushu Institute of Technology   Faculty of Engineering   Department of Electrical and Electronic Engineering   Assistant Professor  

  • 2024.04
    -
    2026.03
     

    Kyushu Institute of Technology   Advanced Research Headquarters   Center of Excellence for Advanced Research   IoT Network Innovation Research Center   Assistant Professor  

  • 2023.10
    -
    2024.03
     

    Kyushu Institute of Technology   Advanced Research and Social Cooperation Headquarters   IoT Network Innovation Research Center   Assistant Professor  

Academic Society Memberships

  • 2025.10   The Institute of Electronics, Information and Communication Engineers   Japan

  • 2025.10   Institute of Electrical and Electronics Engineers (IEEE)   United States

  • 2022.12   The Japan Society for Aeronautical and Space Science   Japan

Research Career

  • CubeSat Antenna

    研究期間： 2019.04  - 

    　More details

    Developing reliable and high performance antenna for CubeSat that has limited resources

  • Underwater Radil Communication

    研究期間： 2023.10  - 

Papers

  • On-Orbit Experimental Result of a Non-Deployable 430-MHz-Band Antenna Using a 1U CubeSat Structure Reviewed International journal

    Daisuke Nakayama, Mengu Cho, et al.

    Electronics ( Multidisciplinary Digital Publishing Institute )   2022.04

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    Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)

    DOI： 10.3390/electronics11071163

    Other Link： https://www.mdpi.com/2079-9292/11/7/1163

  • Design of a copper-tape-based impedance matching circuit for helical antennas using a Klopfenstein taper Reviewed International journal

    Daisuke Nakayama, Mengu Cho

    IEICE Electronics Express ( The Institute of Electronics, Information and Communication Engineers )   2026.02

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    Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)

    DOI： 10.1587/elex.23.20250725

  • Coverage Ratio–Based Evaluation of Antenna Omnidirectionality for a Pair of Microstrip Patch Antennas on a 6U CubeSat Reviewed International journal

    Daisuke Nakayama, Kei Sano, Rin Sato, Tohlu Matsushima, Yuki Fukumoto

    Applied Science   2026.02

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    Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)

    DOI： 10.3390/app16031552

    Other Link： https://www.mdpi.com/2076-3417/16/3/1552

  • Design and Simulation of an S-band Slot Antenna Integrated into a 3U CubeSat Rail Reviewed

    Daisuke Nakayama, Tohlu Matsushima, Yuki Fukumoto

    Proceedings of 2025 International Symposium on Antennas and Propagation (ISAP)   2025.10

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    Authorship：Lead author   Language：English   Publishing type：Research paper (international conference proceedings)

    日本国   福岡市  

    DOI： 10.34385/proc.98.1571150577

  • Design of a High-Gain X-Band Electromagnetic Band Gap Microstrip Patch Antenna for CubeSat Applications Reviewed International journal

    Ta, Linh Phuong, Daisuke Nakayama, Miyuki Hirose

    Electronics   14 ( 11 )   2216   2025.03

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)

    DOI： 10.3390/electronics14112216

  • A Study on the Derivation of Atmospheric Water Vapor Based on Dual Frequency Radio Signals and Intersatellite Communication Networks Reviewed International journal

    Ramson Munyaradzi Nyamukondiwa, Necmi Cihan Orger, Daisuke Nakayama, Mengu Cho

    Aerospace ( Multidisciplinary Digital Publishing Institute )   2023.08

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)

    The atmospheric total water vapor content (TWVC) affects climate change, weather patterns, and radio signal propagation. Recent techniques such as global navigation satellite systems (GNSS) are used to measure TWVC but with either compromised accuracy, temporal resolution, or spatial coverage. This study demonstrates the feasibility of predicting, mapping, and measuring TWVC using spread spectrum (SS) radio signals and software-defined radio (SDR) technology on low Earth-orbiting (LEO) satellites. An intersatellite link (ISL) communication network from a constellation of small satellites is proposed to achieve three-dimensional (3D) mapping of TWVC. However, the calculation of TWVC from satellites in LEO contains contribution from the ionospheric total electron content (TEC). The TWVC and TEC contribution are determined based on the signal propagation time delay and the satellites’ positions in orbit. Since TEC is frequency dependent unlike TWVC, frequency reconfiguration algorithms have been implemented to distinguish TWVC. The novel aspects of this research are the implementation of time stamps to deduce time delay, the unique derivation of TWVC from a constellation setup, the use of algorithms to remotely tune frequencies in real time, and ISL demonstration using SDRs. This mission could contribute to atmospheric science, and the measurements could be incorporated into the global atmospheric databases for climate and weather prediction models.

    DOI： 10.3390/aerospace10090807

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Publications (Books)

  • 特集 　実力けた違い ！ 小回路アレイの数理

    中山　大輔（Sole author）

    CQ出版社  2025.12 

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    Language：Japanese

Conference Prsentations (Oral, Poster)

  • Three-Dimensional Radiation Patterns of CubeSats and Link Budget Without Attitude Control

    Daisuke Nakayama, Kei Sano, Rin Sato 他

    Small Satellite Conference 

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    Event date： 2025.08.10 - 2025.08.13   Language：English  

    As CubeSat missions demand higher data rates, directional patch antennas have increasingly replaced traditional monopole or dipole antennas, and ensuring omnidirectional coverage—especially under tumbling conditions—has become critical. To address this, we developed a three-dimensional radiation pattern measurement system that enables the evaluation of antenna characteristics across all possible CubeSat attitudes. To apply these measurements to practical operations, we introduce the Coverage Ratio of CubeSat Attitude (CRCA), which intuitively represents the percentage of satellite orientations that exceed a given required gain. In this study, we apply this methodology to the S-band downlink antenna system of VERTECS, a 6U CubeSat developed by the Kyushu Institute of Technology in collaboration with other institutions. The measured results show that a gain of –7.0 dBic or higher is achieved in 50% of all possible attitudes, demonstrating sufficient coverage under tumbling conditions. Incorporating this value into the link budget confirms that stable communication can be maintained with a positive link margin even in the worst-case scenario. These findings highlight the importance of three-dimensional antenna characterization and system-level evaluations in ensuring reliable CubeSat communications. Future work includes in-orbit validation of the link budget and estimation of the expected downlink data volume through combined orbital and attitude simulations.

  • Initial Performance Evaluation of a C-band Ground Station for Next-generation KOSEN CubeSat

    Aoi Kubota, Katsuya Kamiyama, Makoto Wakabayashi, Daisuke Nakayama

    the 8th NIT-NUU Bilateral Academic Coference 2025 

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    Event date： 2025.06.19 - 2025.06.20   Language：English  

  • CubeSat Antenna Design for University Owned Lunar Exploration: S-band Transparent Patch Array Antenna

    Daisuke Nakayama, Mengu Cho

    Small Satellite Conference 

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    Event date： 2022.08.06 - 2022.08.11   Language：English  

Industrial Property

  • 人工衛星

    中山　大輔

    　More details

    Application no：特願2050-174024  Date applied：2025.10.15

  • Helical Antenna

    Daisuke Nakayama

    　More details

    Application no：特願2025-002546  Date applied：2025.01.07

Honors and Awards

  • The Institute of Electronics, Information and Communication Engineers Young Researcher Award in Environmental Electromagnetic Engineering

    The Institute of Electronics, Information and Communication Engineers   Evaluation of the effect on site VSWR of partially floor-placed radio absorbers in the 2 GHz band.   2025.03

    Daisuke Nakayama, Tohlu Matsushima, Yuki Fukumoto

    　More details

    Country：Japan

  • IEICJ CETC 2024 Best Paper Award

    The Institute of Electronics, Information and Communication Engineers   Selection of suitable magnetic cores for contactless signal application in power line communication   2024.10

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    Country：Japan

Other External Funds

  • 超小型衛星ミッションインテグレーター設立に向けた衛星システムの汎用化

    2024.04 - 2025.09

    国立研究開発法人科学技術振興機構 「PARKSスタートアップ創出プログラム」  

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    VERTECSで培ったCubeSat開発ノウハウをもとにCubeSatの開発を行うベンチャー企業を設立する．

Other Research Activities

  • Development 6U CubeSat "VERTECS"

    2022.10

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    6U (10cm×20cm×30cm) astronomical nano-satellite designed to reveal star formation history by observing visible extragalactic background light.
    I was in charge of S-band and X-band communication sub-system.

  • Development 6U CubeSat "KITSUNE"

    2019.06
    -
    2023.03

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    Development a 6U CubeSat bringing 5m-class camera and 20Mbps-class C-band(5.8Gz) transmitter.
    I was in charge of communication sub-system.

  • Development of BIRDS-4 satellite

    2018.10
    -
    2022.07

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    Developing Paraguay's first satellite and supporting space activities in Philippines.
    It was launched in 2021 with many missions on board. It also carried the hentenna mission, a non-deployable UHF antenna using a 1U CubeSat structural frame.