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

Research Project

Project/Area Number 20K04468
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 InstitutionUniversity of the Ryukyus

Principal Investigator

Saito Masato  琉球大学, 工学部, 准教授 (30335476)

Project Period (FY) 2020-04-01 – 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 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords指向性多重アンテナ / 受信ダイバーシチ / 多入力多出力(MIMO) / アンテナパターン / 符号分割多重(CDM) / 多入力多出力 (MIMO) / 符号分割多重 (CDM)
Outline of Research at the Start

無線通信の受信機では,多数のアンテナを設置することにより受信品質を高められることが知られる一方で,アンテナ接地面積やアンテナと受信機を接続するケーブルの配線コストが問題となる.本研究では,アンテナの指向性形成に信号多重の概念を取り入れた,指向性多重アンテナにより,小型でありながら,複数の指向性アンテナが同一地点に同時に設置されたかのような(物理的には存在し得ない)アンテナの実現を目標として,理論検討および実験による検証を行う.

Outline of Final Research Achievements

In this study, we aimed to realize a "directivity multiplexing antenna" that incorporates the concept of signal multiplexing into forming antenna directivity. A "directivity multiplexing antenna" is a compact antenna that behaves as if multiple directional antennas are installed simultaneously at the same location. We investigated the directivity formation method of the directivity multiplexing antenna, the generation of applied voltages to achieve directional multiplexing, and the experimental verification of these methods. As part of the research, we established a method to analytically derive the reactance required to form the desired directivity in a two-element variable directivity antenna. Additionally, we derived the reactance time sequences for the same band antenna and demonstrated the multiplexing of directivity.

Academic Significance and Societal Importance of the Research Achievements

指向性多重アンテナの学術的意義は,アンテナ工学および通信技術の進展に寄与する点にある.同一地点に複数の指向性アンテナが存在するかのような効果を小型アンテナで実現することは,アンテナの設計と配置の新しい可能性を開拓する.
社会的意義としては,通信インフラの効率化と高性能化が挙げられる.小型で高機能なアンテナは,スマートフォンやIoTデバイスの通信性能を向上させるだけでなく,基地局や衛星通信の装置も小型化し,設置や運用コストを削減する可能性がある.

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (6 results)

All 2023 2021

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Diversity Reception and Interference Cancellation for Receivers Using Antenna with Periodically Variable Antenna Pattern2021

    • Author(s)
      Nobuhide KINJO, Masato SAITO
    • Journal Title

      IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

      Volume: E104.A Issue: 1 Pages: 253-262

    • DOI

      10.1587/transfun.2020WBP0006

    • NAID

      130007964756

    • ISSN
      0916-8508, 1745-1337
    • Year and Date
      2021-01-01
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Analysis of Multiplexed Antenna Patterns in a Two-element ESPAR Antenna2023

    • Author(s)
      Anand Mohan Gupta, Masato Saito
    • Organizer
      2023年電子情報通信学会ソサイエティ大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Analytical Derivation of Reactance Time Function Generating Multiplexed Antenna Patterns for Two-Element ESPAR Antenna2023

    • Author(s)
      Anand Mohan Gupta, Masato Saito
    • Organizer
      2023 International Symposium on Antennas and Propagation
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Spectral Analysis of Array Factor using Reactance Sequence in a Two-Element ESPAR Antenna2023

    • Author(s)
      Anand Mohan Gupta, Masato Saito
    • Organizer
      International Conference on Materials and Systems for Sustainability 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Analytical Reactance Time Function of Two-element ESPAR Antenna Generating Periodic Antenna Patterns2023

    • Author(s)
      Anand Mohan Gupta, Masato Saito
    • Organizer
      2023年電子情報通信学会総合大会
    • Related Report
      2022 Research-status Report
  • [Presentation] アンテナパターン多重による大規模出力・低コスト受信アンテナに関する研究2021

    • Author(s)
      齋藤将人
    • Organizer
      電子情報通信学会アンテナ・伝播研究会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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