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Research on Desighn Method of Antennas Used for Compact Portable Telephine

Research Project

Project/Area Number 05650340
Research Category

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

Allocation TypeSingle-year Grants
Research Field 情報通信工学
Research InstitutionTohoku University

Principal Investigator

SAWAYA Kunio  Tohoku Univ., Faculty of Engineering, Professor, 工学部, 教授 (60108470)

Co-Investigator(Kenkyū-buntansha) IGARI Kazuhisa  Tohoku Univ., Faculty of Engineering, Res.Staff, 工学部, 教務職員 (10250705)
CHEN Li  Tohoku Univ., Res.Inst.Elec.Comm.Res.Asso., 電気通信研究所, 助手 (30250690)
UNO Toru  Tokyo Univ.Agr.Tech, Faculty of Engineering, Asso.Prof., 工学部, 助教授 (80176718)
Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1994: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1993: ¥1,300,000 (Direct Cost: ¥1,300,000)
Keywordsmobile communication / portable telephone / antenna / design method / Green's function / Method of moment / FDTD method / 携帯電話
Research Abstract

In order to establish design methods of antennas used for the portable telephones, analyzes of the characteristics of antennas mounted on a conducting body of the portable telephone have been performed using a new method proposed by the present investigators, the Galerkin moment method and the finite diffierence time domain (FDTD) method. S-shaped antenna, which was developed by the present investigators, has been designed by the FDTD method and fabricated.
1. The new method, combining the interior Green's function of the conducting box and the moment method has been applied to the analysis of the antennas mounted on the conducting box. The results show that the accuracy of the analysis is almost the same to that of the conventional Galerkin moment method, while the required CPU time is about 1% of that in the moment method. Numerical results of the characteristics of a slot antenna and a monopole antenna mounted on the conducting box have been obtained . Thus, it has been confirmed tha … More t the new method is available for the numerical design method of the portable telephone antennas. The present method has been applied to analyze the characteristics of a slot antenna on a conducting circular cylinder with finite length.
2. The characteristics of typical antennas used for the portable telephone such as the monopole antenna, the planar inverted F-shaped antenna and the S-shaped antenna have been and analyzed by using the FDTD method, the validity of the FDTD method for the design method of the portable telephone has been confirmed. The effect of a dielectric layr surrounding the body of telephone and the influence of the human body have been also analyzed and discussed.
3. S-shaped antenna has been numerically designed by the FDTD method and fabricated. It has been shown experimentally that the S-shaped antenna has a wide frequency band width even when the volume of the portable telephone is less than 100cm^2 and the decrease of the radiation efficiency in the presence of the human body is small. Less

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (31 results)

All Other

All Publications (31 results)

  • [Publications] Li Chen: "Transient Field Distributions Radiated from Portable Telephone Antenna" Proc.XXIVth General Assembly of URSI. 73-73 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Kunio Sawaya: "Analysis Method of Small Antennas-Application on Portable TelePhone Antennas-" Proc. XXIVth General Assembly of URSI. 35-35 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ryo Yamaguchi: "Effect of Dimensions of Conducting Box On Radiation Pattern of a Monopoole Antenna for Portable Telephone" IEICE Trans.Communications. E76-B. 1526-1531 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Li Chen: "FDTD Analysis of a Monopole Antenna Mounted on a Conducting Box Covered with a Layer of Dielectric" IEICE Trans.Communications. E76-B. 1583-1586 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Kunio Sawaya: "Moment Method Analysis of Antennas Located on a Conducting Box by Using Interior Green's Function" Proc.IEEE Int.AP-S Symp.3. 2258-2261 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Kunio Sawaya: "An Improved Moment Method Analysis of Antennas Located on a Conducting Box by Using Interior Green's Function" IEEE Trans.Antennas Propagation. (発表予定). (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 陳 驪: "人体の携帯電話機用アンテナへの影響" 電子情報通信学会秋季大会講演論文集. 2. 122-122 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 山口 良: "内部グリーン関数を用いた有限長円筒導体からの散乱のモーメント法解析" 電気学会電磁会理論研究会資料. EMT-93-62. 51-60 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Li Chen: "FDTD Analysis of Built in Antennas for Portable Telephone" 電気学会電磁会理論研究会資料. EMT-93-98. 11-20 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 稲垣 正史: "内部グリーン関数を用いた有限長円筒導体上のスロットアンテナの解析" 電子情報通信学会総合大会講演論文集. 通信1. 146-146 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] L.Chen, T.Uno and S.Adachi: "Transient Field Distributions Radiated from Portable Telephone Antenna" Proc.XXIVth General Assembly of URSI. 73 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] K.Sawaya and S.Adachi: "Analysis Method of Small Antennas-Application on Portable Telephone Antennas-" Proc.XXIVth General Assembly of URSI. 35 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] R.Yamaguchi, K.Sawaya, Y.Fujino and S.Adachi: "Effect of Dimensions of Conducting Box on Radiation Pattern of a Monopoole Antenna for Portable Telephone" IEICE Trans.Communications. Vol.E76-B,No.12. 1526-1531 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] L.Chen, T.Uno S.Adachi and R.J.Luebbers: "FDTD Analysis of a Monopole Antenna Mounted on a Conducting Box Covered with a Layr of Dielectric" IEICE Trans.Communications. Vol.E76-B,No.12. 1583-1586 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] K.Sawaya, T.Tanaka, R.Yamaguchi and S.Adachi: "Moment Method Analysis of Antennas Located on a Conducting Box by Using Interior Green's Function" Proc.IEEE Int.AP-S Symp.Vol.3. 2258-2261 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Li Chen: "FDTD Analysis of a Monopole Antenna Mounted on a Conducting Box Covered with a Layer of Dielectric" IEICE TRANSACTIONS on Communications. E76-B. 1583-1586 (1993)

    • Related Report
      1994 Annual Research Report
  • [Publications] Kunio Sawaya: "Moment Method Analysis of Antennas Located on a Conducting Box by Using Interior Green's Function" IEEE Antennas and Propagation Society International Symposium. 3. 2258-2261 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 稲垣正史: "内部グリーン関数を用いた有限長円筒導体上のスロットアンテナの解析" 電子情報通信学会春季全国大会講演論文集. 通信1(発表予定). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 山口 良: "携帯電話機モノポールアンテナの入力インピーダンスに及ぼす導体寸法の影響" 電子情報通信学会春季大会講演論文集. 2. 99-99 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 陳 驪: "携帯電話機内蔵S形アンテナのFDTD法解析" 電子情報通信学会春季大会講演論文集. 2. 100-100 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 陳 驪: "携帯電話機用アンテナのFDTD法解析" 日本シミュレーション学会計算電気・電子工学シンポジウム論文集. 14. 129-134 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Li Chen: "Transient Field Distributions Radiated from Portable Telephone Antenna" Proc. XXIV General Assembly URSI. 73-73 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Kunio Sawaya: "Analysis Method of Small Antenna -Application on Portable Telephone Antennas-" Proc. XXIV General Assembly URSI. 35-35 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 山口 良: "内部グリーン関数を用いた携帯電話機モノポールアンテナの入力インピーダンス解析" 電子情報通信学会秋季大会講演論文集. 2. 121-121 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 陳 驪: "人体の携帯電話機用アンテナへの影響" 電子情報通信学会秋季大会講演論文集. 2. 122-122 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 山口 良: "内部グリーン関数を用いた有限長円筒導体からの散乱のモーメント法解析" 電気学会電磁界理論研究会資料. EMT-93-62. 51-60 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Li Chen: "FDTD Analysis of Built-in Antenna for Portable Telephone" 電気学会電磁界理論研究会資料. EMT-93-98. 11-20 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Ryo Yamaguchi: "Effect of Dimension of Conducting Box on Radiation Pattern of a Monopole Antenna for Portable Telephone" IEICE Transactions on Communications. E76-B-12. 1526-1531 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Li Chen: "FDTD Analysis of A Monopole Antenna Mounted on A Conducting Box Covered with A Layer of Dielectric" IEICE Transactions on Communications. E76-B-12. 1583-1586 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Kunio Sawaya: "Moment Method Analysis of Antennas Located on a Conducting Box by Using Interior Green's Function" IEEE AP-S Symp.(予定). (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] 山口 良: "内部グリーン関数を用いた有限長円筒導体上スロットアンテナのモーメント法解析" 電子情報通信学会春季大会講演論文集. 2(予定). (1994)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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