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The biological effects of the mobile communication systems

Research Project

Project/Area Number 09650429
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 情報通信工学
Research InstitutionTokyo University of Technology

Principal Investigator

KURODA Michiko  Tokyo University of Tecimology Department of Information Networks, Professor, 工学部, 教授 (70225308)

Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 1998: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1997: ¥2,100,000 (Direct Cost: ¥2,100,000)
KeywordsWireless LAN / SAR / body fitted grid generation with moving boundary / FD-TD method / scattering / grid generation / 近傍界 / 格子生成法 / 移動境界適合座標
Research Abstract

As there has been a rapid increase in a mobile communication systems, it becomes important to evaluate the Specific absorption rate (SAR) in human body. The SAR in a human body model from a wireless phone placed closed to the head is calculated by FD-TD method. These results were presented in Proceedings of the 1996 Electronics Society Conference of IEICE and Proceedings of the 1997 IEICE General Conference. It is also very important to evaluate the field distribution by the movement of the human body. Recently as the wireless LAN becomes popular, it is necessary to know the interaction between the antenna and the human body The radiation pattern anti the characteristics are altered by the presence of the human body. This interaction as well as SAR in the human body are of particular interest for mobile communication systems. To clarify the propagation characteristics in the wireless LAN, the author examined the Influence the antenna and the user interactions analytically and experimentally. To solve these problems numerically the author has proposed a novel numerical procedure of grid generation having coordinate line coincident with an arbitrarily shaped moving boundary. By using the presented transformation technique, partial differential equations can be solved very easily in the fixed rectangular coordinate system. Finally we can solve the moving problem in a fixed rectangular coordinate system. Some numerical results are compared with the experimental ones and excellent agreement between them are obtained. These results were presented at The Electromagnetic Theory Symposium in 1997, 1999, FESS99 and ICEAA99 in 1999 published in IEICE Trans, in 1998 and will be published in Electromagnetic Waves and Electronic Systems (EW&ES) in 2000.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] M.Kuroda,S.Kuroda: "The FD-TD method for the analysis of electromagnetic wave scattering from an object moving parallel to the incident wave(in press)"Electromagnetic Wavesand Electro. (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M.Kuroda,H.Isobe H.Kasainic Systems(EW&ES): "Electromagnetic wave scattering from a body moving in an arbitrary direction through use of the body fitting grid generation with moving boundary:Quasi-stationary approximation"IEICE Trans.Electron. E-81-C,4. 615-617 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 黒田道子,宮下英明: "平行におかれた2枚の振動する導体反射板間の電磁波"電子情報通信学会論文誌. J78-C-I,12. 711-713 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Michiko Kuroda: "Electromagnetic wave scattering from perfectly conducting moving boundary-An application of the body fitting grid generation with moving boundary"IEICE Trans.Electron. E77-C,11. 1735-1739 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M.Kuroda,S.Kuroda: "The FD-TD method for analysis of electromagnetic wave scattering from an object moving parallel to the incident wave"FESS'99. 22-29 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M.Kuroda,S.Kuroda: "FD-TD method for electromagnetic wave scattering from a moving body by using the body fitted grid generation with moving boundary"ICEAA99,. 540-552 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M. Kuroda, S. Kuroda: "The FD-TD method for the analysis of electromagnetic wave scattering from an object moving parallel to the incident wave"EW&ES. (Submitte).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M. Kuroda, H. Isobe, H. Kasai: "Electromagnetic wave scattering from a body moving in an arbitrary direction through use of the body fitted grid generation with moving boundary : Quasi-stationary approximation"IEICE Trans.Electron. vol E-81-C,No.4. 615-617 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M. Kuroda, H. Miyashita: "Electromagnetic waves reflected between two parallel perfectly conducting moving plate"IEICE Trans. Vol.J78-C-I,No,12. 711-713 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M. Kuroda: "Electromagnetic wave scattering from perfectly conducting moving boundary- An application of the body fitted grid generation with moving boundary"IEICE Trans.Electron. vol.E77-C No.11. 1735-1739 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M. Kuroda, S. Kuroda: "The FD-TD method for the analysis of electromagnetic wave scattering from an object moving parallel to the incident wave"FESS'99, Nakhodka. 22-29 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M. Kuroda, S. Kuroda: "FD-TD method for electromagnetic wave scattering from a moving body by using the body fitted grid generation with moving boundary"ICEAA99, Thrino. 549-552 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Michiko Kuroda: "Electromagnetic wave scattering from a body moving in an arbitrary direction through use of the body fitted grid generation with moving boundary:Quasi-stationary approximation" IEICE Trans.Electron.E81-C,4. 438-440 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 黒田 道子: "平行におかれた2枚の振動する導体反射板間の電磁波" 電子情報通信学会論文誌. J78-C-I,12. 711-713 (1995)

    • Related Report
      1998 Annual Research Report
  • [Publications] Michiko Kuroda: "Electromagnetic wave scattering from perfectly conducing moving boundary-An application of the body fitted grid generation with moving boundary" IEICE Trans.Electron.E77-C,11. 1735-1739 (1994)

    • Related Report
      1998 Annual Research Report
  • [Publications] 黒田 道子: "移動境界適合座標系を用いたFD-TD法による任意方向移動物体からの散乱波の解析" 電気学会電磁界理論研究会資料. EMT97-15. 23-27 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] 黒田 道子,江坂 裕: "近傍電磁界における頭部SARとシールド効果" 電子情報通信学会総合全国大会講演論文集. C-1-14. 10 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] 江坂 裕,黒田 道子: "携帯電話による眼を含む人体頭部のSAR" 電子情報通信学会通信ソサエティ大会論文集. B-284. 285 (1996)

    • Related Report
      1998 Annual Research Report
  • [Publications] Michiko Kuroda: "Electromagnetic wave scattering from a body moving in an arbitrary direction through use of the body fitted grid generation with moving boundary:Quasi-stationary approximation" IEICE Trans.Electron.E81-C,4. 438-440 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 黒田 道子: "平行におかれた2枚の振動する導体反射板間の電磁波" 電子情報通信学会論文誌. J78-C-I,12. 711-713 (1995)

    • Related Report
      1997 Annual Research Report
  • [Publications] Michiko Kuroda: "Electromagnetic wave scattering from perfectly conducing moving boundary-An application of the body fitted grid generation with moving boundary" IEICE Trans.Electron.E77-C,11. 1735-1739 (1994)

    • Related Report
      1997 Annual Research Report
  • [Publications] 黒田 道子: "移動境界適合座標系を用いたFD-TD法による任意方向移動物体からの散乱波の解析" 電気学会電磁界理論研究会資料. EMT97-15. 23-27 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 黒田 道子,江坂 裕: "近傍電磁界における頭部SARとシールド効果" 電子情報通信学会総合全国大会講演論文集. C-1-14. 10 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 江坂 裕,黒田 道子: "携帯電話による眼を含む人体頭部のSAR" 電子情報通信学会通信ソサエティ大会論文集. B-284. 285- (1996)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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