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Study on Achievement of a High-performance Test Room for Measuring Electromagnetic Disturbance

Research Project

Project/Area Number 09450156
Research Category

Grant-in-Aid for Scientific Research (B)

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

Principal Investigator

TOKUDA Masamitsu  Kyushu Institute of Technology, Faculty of Engineering, Professor, 工学部, 教授 (70284586)

Co-Investigator(Kenkyū-buntansha) WATANABE Yukio  Kyushu Institute of Technology, Faculty of Engineering, Assistant Professor, 工学部, 助教授 (40274550)
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥16,100,000 (Direct Cost: ¥16,100,000)
Fiscal Year 1999: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1998: ¥5,500,000 (Direct Cost: ¥5,500,000)
Fiscal Year 1997: ¥9,600,000 (Direct Cost: ¥9,600,000)
KeywordsAnechoic chamber / Electromagnetic absorber / Ferrite electromagnetic absorber / Site attenuation / Ray tracing method / FDTD method / Magnetic shield / Super lattice / ワイヤグリッド法 / 磁性材料 / 磁気シールドルーム
Research Abstract

With the objective of achieving a high-performance test room for measuring electromagnetic disturbance, an electromagnetic anechoic chamber and a magnetic shield chamber are investigated.
The results obtained are as follows :
(1) Realization of High Performance Anechoic Chamber ; With the construction on an anechoic chamber which uses foamed ferrite as new absorbing material, it is confirmed that the absorber thickness can be decreased to lO cm, which is 1/10 that of the conventional absorber. This is the first in the world to realize a thickness of only lO cm in the frequency range of 30 MHz to 10 GHz.
(2) Simulation of Electromagnetic Field for Anechoic Chamber ; We developed a calculation method of NSA (Normalized Site Attenuation) in the frequency range above 200 MHz by using ray tracing method and theoretically investigated methods of improving NSA of anechoic chamber using the same calculation method. For the frequency range below 200 MHz, we developed an NSA calculation method using FDTD (Finite Difference Time Domain) method.
(3) Magnetic Material for Magnetic Shield Chamber ; We produced magnetic dielectric super lattices and- discovered that it is possible to control their electrical resistance while maintaining the magnetic properties. Furthermore, at extreme low temperatures, we discovered effects which are thought to be the result of a new phenomenon which increases permeability by more than a hundred times that of same-class conventional materials.

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (30 results)

All Other

All Publications (30 results)

  • [Publications] M.Tokuda, K.Shimada and H.Ishii: "Site Attenuation Characteristics of Anechoic Chamber Using Foamed Ferrite as New Absorbing Material"International Symposium on Electromagnetic Compatibility, Tokyo. 240-243 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K.Shimada, T.Hayashi, and M.Tokuda: "Fully Compact Anechoic Chamber Using High Frequency Ferrite Pyramid Absorber"2000 IEEE International Symposium on Electromagnetic Compatibility, Washington DC. 225-230 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M.Inoguchi, E.Kimura and M.Tokuda: "Analyzing and Improving Characteristics of Anechoic Chamber Using Ray Tracing Method"4^<th> European Symposium on Electromagnetic Compatibility(EMC Europe 2000 Brugge). 143-148 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Y.Takiguchi, E.Kimura and M.Tokuda: "NSA Characteristics of Anechoic Chamber Using FDTD method"4^<th> European Symposium on Electromagnetic Compatibility(EMC Europe 2000 Brugge). 257-262 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] A.Horiguchi, T.Matsuda and Y.Watanabe: "Size effect and temperature dependence of spin conduction in Gd/SiN ultrathin film"J.Appl.Phys.. 87(9). 6603-6605 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M.Okano and Y.Watanabe: "Nonvolatile programmable two-terminal diodes using ferroelectric semiconductor"Appl. Phys. Lett.. 76(2). 233-235 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M.Tokuda, K.Shimada and H.Ishii: "Site Attenuation Characteristics of Anechoic Chamber Using Foamed Ferrite as New Absorbing Material"Inter.Sympo.on EMC, Tokyo. 240-243 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K.Shimada, T.Hayashi and M.Tokuda: "Fully Compact Anechoic Chamber Using High Frequency Ferrite Pyramid Absorber"2000 IEEE Inter. Sympo.on EMC, Washington DC. 225-230 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M.Inoguchi, E.Kimura and M.Tokuda: "Analyzing and Improving Characteristics of Anechoic Chamber Using Ray Tracing Method"4^<th> European Sympo. on EMC. 143-148 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Y.Takiguchi, E.Kimura and M.Tokuda: "NSA Characteristics of Anechoic Chamber Using FDTD method"4^<th> European Sympo. on EMC. 257-262 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Horiguchi, T.Matsuda and Y.Watanabe: "Size effect and temperature dependence of spin conduction in Gd/SiN ultrathin film"J.Appl.Phys.. Vol.87, No.9. 6603-6605 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M.Okano and Y.Watanabe: "Nonvolatile programmable two-terminal diodes using ferroelectric semiconductor"Appl.Phys.Lett.. Vol.76, No.2. 233-235 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M.Tokuda,K.Shimada and H.Ishii: "Site Attenuation Characteristics of Anechoic Chamber Using Foamed Ferrite as New Absorbing Material"International Symposium on Electromagnetic Compatibility,Tokyo. 240-243 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Kawashima,J.Aquino and M.Tokuda: "Evaluation of Anechoic Chamber Characteristics Using an Optically Driven Imitated Equipment"International Symposium on Electromagnetic Compatibility,Tokyo. 244-247 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Hayashi,S.Inoue,K.Shimada and M.Tokuda: "Anechoic Chamber Using Foamed Ferrite for Immunity Tests in the Frequency Range Over 1 GHz"International Symposium on Electromagnetic Compatibility,Tokyo. 256-259 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Shimada,T.Hayashi,and M.Tokuda: "Fully Compact Anechoic Chamber Using High Frequency Ferrite Pyramid Absorber"2000 IEEE International Symposium on Electromagnetic Compatibility,Washington DC. 8月発表予定 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] A.Horiguchi and Y.Watanabe: "Low Temperature Growth of Epitaxial (Ba,Sr)TiO_3 Thin Film Sputter MBE Method"Jpn.J.Appl.Phys.. 38(9B). 5314-5316 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Okano and Y,Watanabe: "Nonvolatile programmable two-terminal diodes using ferroelectric semiconductor"Appl.Phys.Lett.. 76(2). 233-235 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Tokuda,K.Simada and H.Ishii: "Site attenuation characteristics of fully anechoic chamber using foamed ferrite as new absorbing material" 1998 Korea-Japan AP/EMC/EMT Joint Conference Proceedings. 181-184 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Hayashi,K.Simada,H.Ishii and M.Tokuda: "Production methods and characteristics of foamed ferrite as new absorbing material of anechoic chamber" 1998 Korea-Japan AP/EMC/EMT Joint Conference Proceedings. 189-192 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] J.C.Carlos Aquino,T.Kawashima and M.Tokuda: "Evaluation of anechoic chamber characteristics using optically driven equipment under test" 1999 IEEE International Symposium on Electromagnetic Compatibility. 8月発表予定. (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Kimura,M.Ooki and M.Tokuda: "Induction characteristics of an equipment with the grounding wire using wire-grid approximation" 1999 IEEE International Symposium on Electromagnetic Compatibility. 8月発表予定. (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Watanabe,D.Sawamura,M.Okano and N.Toyama: "Leakage current spectroscopy of epitaxial ferroelectric/semiconductor heterostructures and their memory effect" Applied Surface Science. 130-132. 682-688 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Watanabe: "Theoretical investigation of the thickness effect of ferroelectric incorporating semiconducting properties" Applied Surface Science. 130-132. 610-615 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] アキノ、木村、徳田: "ワイヤグリッド法を用いた電波無響室のサイト減衰量推定法" 1998年電子情報通信学会総合大会. B-4-75. 360-360 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 徳田、島田、石井: "九州工大電波無響室の仕様と特性(その1)" 電子情報通信学会技術研究報告 EMCJ. (5月発表予定). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 島田、石井、徳田: "九州工大電波無響室の仕様と特性(その2)" 電子情報通信学会技術研究報告 EMCJ. (5月発表予定). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 林、島田、徳田他: "発泡フェライトの製造と特性" 電子情報通信学会技術研究報告 EMCJ. (5月発表予定). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] アキノ、木村、徳田 他: "ワイヤグリッド近似を用いた電波半無響室の特性解析" 電子情報通信学会技術研究報告 EMCJ. (5月発表予定). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 木村、大木、徳田他: "ワイヤグリッド近似を用いた機器の接地線誘導特性" 電子情報通信学会技術研究報告 EMCJ. (5月発表予定). (1998)

    • Related Report
      1997 Annual Research Report

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

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