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Creation and experimental verification of a circularly polarized anti-interference antenna

Research Project

Project/Area Number 21K04068
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21020:Communication and network engineering-related
Research InstitutionHosei University

Principal Investigator

Nakano Hisamatsu  法政大学, その他部局等, 名誉教授 (00061234)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsアンテナ / 円偏波 / メタマテリアル / 干渉波除去 / メタアトム / メタループ / 干渉除去アンテナ / 干渉除去
Outline of Research at the Start

研究最終目標は円偏波用干渉除去アンテナ(Anti-Interference Antenna: AI-ANT)を創造することにある. 従来のAI-ANTは直線偏波用であり, 円偏波用AI-ANTの例はアンテナ構成が難しいために極めて少ない. この背景のもとに本研究では, AI-MetaANTとよばれる機能性の高い円偏波用アンテナを構築していく. アンテナの最終形態は, 円偏波放射メタマテリアルループを同心状に複数個配置したものとなる. アンテナ構築を通して, 学術上から干渉波除去についての電磁界特性を体系化する. 得られた成果は円偏波を使用する移動体間通信や, 衛星通信などに用いられる.

Outline of Final Research Achievements

With progress in communications systems, the deterioration in the communication efficiency, which is caused by interference of malicious electromagnetic waves, becomes a serious issue. Fortunately, this deterioration is overcome if an antenna acting as an input/output of the communication system is electromagnetically functionalized. Such an antenna is called Anti-interference Antenna: AI-ANT. It is noted that there are some AI-ANTs that radiate a linearly polarized wave, however there are few circularly polarized AI-ANTs due to difficulties in the antenna fabrication. The purpose of this project is to overcome the fabrication difficulties and create a circularly polarized AI-ANT. It is emphasized that this antenna is made of metamaterial atoms and has a thin plane structure. The antenna is abbreviated as AI-MetaANT.

Academic Significance and Societal Importance of the Research Achievements

本研究では, 新人工材料素子であるメタマテリアルアトムを使用し, 薄型・平面構造となる様に, アンテナを創造している. AI-MetaANTとよばれる本アンテナを創造するために, 円偏波放射メタマテリアルループを同心状に複数個配置し, 干渉波除去についての電磁界特性を体系化する.この点に学術的意義がある. さらに, AI-MetaANTは円偏波を使用する移動体間通信や, 衛星通信などに使用される点で社会的意義がある.

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (11 results)

All 2024 2023 2022 2021

All Journal Article (5 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 5 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 6 results,  Invited: 3 results)

  • [Journal Article] Discussion of the Axial Ratio of a Square Loop Antenna With an Attenuating Current2024

    • Author(s)
      H. Nakano, T. Abe, A. Mehta, and J. Yamauchi
    • Journal Title

      IEEE Antennas and Wireless Propagation Letters

      Volume: 23 Issue: 1 Pages: 134-138

    • DOI

      10.1109/lawp.2023.3319948

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Theoretical Consideration of Axial Ratio Deterioration in CP Loop-Shaped Antennas2023

    • Author(s)
      H. Nakano, T. Abe, A. Mehta, and J. Yamauchi
    • Journal Title

      IEEE Antennas and Wireless Propagation Letters

      Volume: 22 Issue: 5 Pages: 1035-1039

    • DOI

      10.1109/lawp.2022.3231615

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Isolated Gain Enhancement for Dual-Band C-Metaloop Antennas Using a Coplanar Compound Method2023

    • Author(s)
      H. Nakano, T. Abe, A. Mehta, and J. Yamauchi
    • Journal Title

      IEEE Transactions on Antennas and Propagation

      Volume: 71 Issue: 7 Pages: 5616-5625

    • DOI

      10.1109/tap.2023.3267174

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Circularly polarized broadside beam radiated from a large, low-profile metaloop antenna2023

    • Author(s)
      H. Nakano, T. Abe, J. Yamauchi
    • Journal Title

      IEEE Transactions on Antennas and Propagation

      Volume: 71 Issue: 1 Pages: 29-38

    • DOI

      10.1109/tap.2022.3210263

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Compound metaloop antenna for circularly polarized beam steering2021

    • Author(s)
      Hisamatsu Nakano, Tomoki Abe, Junji Yamauchi
    • Journal Title

      IEEE Access

      Volume: 9 Pages: 79806-79815

    • DOI

      10.1109/access.2021.3084285

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Gain of LL Metaloop-n Antennas2023

    • Author(s)
      H. Nakano, T. Abe, and J. Yamauchi
    • Organizer
      IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (USNC/URSI)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Radiation from an Active Ring Region2023

    • Author(s)
      H. Nakano, T. Abe, A. Mehta, and J. Yamauchi
    • Organizer
      2023 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Radiation Field from a Metaloop Antenna with a Traveling-Wave Current2023

    • Author(s)
      H. Nakano
    • Organizer
      2023 International Symposium on Antennas and Propagation (ISAP)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Enlarged metaloop antenna2022

    • Author(s)
      H. Nakano, T. Abe, J. Yamauchi
    • Organizer
      IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Metaloop antenna with a conducting plate2022

    • Author(s)
      H. Nakano, T. Abe, J. Yamauchi
    • Organizer
      2022 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Phase of radiation from a square principal source region2021

    • Author(s)
      Hisamatsu Nakano, Tomoki Abe, Junji Yamauchi
    • Organizer
      2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research

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Published: 2021-04-28   Modified: 2025-01-30  

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