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Study of Metamaterial Configuration and its Applications for Frequency Selective Shielding Screen and Radome

Research Project

Project/Area Number 16360158
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Electronic materials/Electric materials
Research InstitutionUniversity of Hyogo

Principal Investigator

HATAKEYAMA Kennichi  University of Hyogo, Graduate School of Engineering, Professor, 大学院工学研究科, 教授 (80305680)

Co-Investigator(Kenkyū-buntansha) TSUTAOKA Takanori  Hiroshima University, Department of Science Education, Professor, 大学院教育学研究科, 教授 (10231432)
FUJIMOTO Kyohei  Foundation for advancement of international science, 専任研究員 (20133035)
YAMAUCHI Kenji  University of Hyogo, School of Engineering, Professor (80047597)
Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥14,700,000 (Direct Cost: ¥14,700,000)
Fiscal Year 2006: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2005: ¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 2004: ¥10,600,000 (Direct Cost: ¥10,600,000)
KeywordsMetamaterial / Artificial dielectrics / EM wave absorber / EM wave shielding screen / Radome / Anisotropic property / 電磁波吸収 / 電磁遮蔽 / 共鳴分散
Research Abstract

The electromagnetic properties of finite-length metal-rod array sheets are discussed as metamaterial, or artificially designed material, and as their chief uses, frequency selective shielding screen and radome materials are investigated.
The metal rods are periodically aligned on a thin dielectric sheets. The resonance of the rods occurs at specific frequency whose wave-length is approximately equal to double the rod length. The metal-rod array sheet permittivity,ε_r=ε_r'-jε_r", which is a average permittivity when the sheet is supposed to be homogeneous, shows frequency dispersion by the metal rod resonance. At frequencies lower than the resonant frequency, f_0,ε_r' becomes high due to the polarizations of the metal rods. The permittivity decreases rapidly at f_0, and at frequencies higher than the resonant frequency, ε_r' becomes negative. The imaginary part, ε_r", becomes maximum at f_0. As magnetic materials, hybrid materials of fine particles of magnetic metals are considered, and … More experimentally their permittivity was confirmed to be almost zero.
The transmission coefficient of the metal-rod aligned sheet becomes minimum at f_0. The frequency selective EM wave screens are made with two or more metal-rod aligned sheets with spacing materials between them. Their shielding properties are experimentally confirmed.
As one of the another applications of this material, absorber is discussed. As absorbing material, one of the key properties of the metal aligned sheet is the rapid decrease of ε_r' around f_0, which leads to the opposite frequency change in reactance X of the sheet input impedance, that is, dX/dw< 0. In conventional material, the frequency property of X is always dX/dw> 0, which is known as Foster's reactance theorem. Since the frequency changes of the metal rod aligned sheet and conventional dielectric sheet are opposite each other, it is possible to minimize the frequency change of input impedance, when these sheets are laminated. Based on this idea, the wide band absorber is achieved.
The frequency selective shielding screens and the wide band absorbers, both made of the rod aligned sheet, are now in process of coming into use.. Less

Report

(4 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (61 results)

All 2007 2006 2005 2004

All Journal Article (58 results) Patent(Industrial Property Rights) (3 results)

  • [Journal Article] マイクロ波帯における異方性電波吸収体評価法の検討2007

    • Author(s)
      山本真一郎, 岩井通, 畠山賢一
    • Journal Title

      電子情報通信学会論文誌 J90-B・2

      Pages: 208-212

    • NAID

      110007378955

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] High Frequency Permeability of Ferromagnetic Metal Composite Materials2007

    • Author(s)
      T.Kasagi, S.Suenaga, T.Tsutaoka, K.Hatakeyama
    • Journal Title

      Journal of Magnetism and Magnetic Materials Vol. 310

      Pages: 2567-2568

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 対角化評価法による異方性電波吸収体評価2007

    • Author(s)
      山本真一郎, 長谷川剣一, 岩井通, 畠山賢一
    • Journal Title

      電子情報通信学会総合大 B-4-87

      Pages: 411-411

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] High Frequency Permeability of Ferromagnetic Metal Composite Materials2007

    • Author(s)
      T.Kasagi, S.Suenaga, T.Tsutaoka, K.Hatakeyama
    • Journal Title

      Journal of Magnetism and Magnetic Materials Vo1.310

      Pages: 2567-2568

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] マイクロ波帯における異方性電波吸収評価法の検討2007

    • Author(s)
      山本真一郎, 岩井通, 畠山賢一
    • Journal Title

      電子情報通信学会論文誌 J90-B・2

      Pages: 208-212

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 対角化評価法による異方性電波吸収体評価2007

    • Author(s)
      山本真一郎, 長谷川剣一, 岩井通, 畠山賢一
    • Journal Title

      電子情報通信学会総合大会 B

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Negative Permeability Spectra in Permalloy Granular Composite Materials2006

    • Author(s)
      T.Kasagi, T.Tsutaoka, K.Hatakeyama
    • Journal Title

      Applied Physics Letters Vol. 88

    • NAID

      120000880342

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] マイクロ波帯における異方性電波吸収体評価法の検討2006

    • Author(s)
      山本真一郎, 岩井通, 畠山賢一
    • Journal Title

      電子情報通信学会論文誌 J90-B-2

      Pages: 208-212

    • NAID

      110007378955

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Negative Permeability Spectra in Permalloy Granular Composite Materials2006

    • Author(s)
      T, Kasagi, T.Tsutaoka, K.Hatakeyama
    • Journal Title

      Applied Physics Letters 88

    • NAID

      120000880342

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 金属線配列材による電磁遮蔽材の線長に関する実験的検討2006

    • Author(s)
      長谷川剣一, 山本真一郎, 畠山賢一, 山内健次
    • Journal Title

      電子情報通信学会総合大会 B-4-32

      Pages: 327-327

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Complex Permeability Spectra of Ferromagnetic Metal Composite Materials and EMC Applications2006

    • Author(s)
      T.Kasagi, T.Tsutaoka, K.Hatakeyama
    • Journal Title

      Progress in Electromagnetic Research Symposium 2006, Tokyo

      Pages: 376-376

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Permeability Spectra of Substituted Barium Ferrite BaFel2-x(TiO. 5CoO. 5)xO19 in Microwave Frequencies and its Use as EMC Devices2006

    • Author(s)
      T.Tsutaoka, N.Koga, T.Kasagi, K.Hatakeyama
    • Journal Title

      Progress in Electromagnetic Research Symposium 2006, Tokyo

      Pages: 377-377

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Frequency Selective Shielding Screen by the Use of Artificial Media2006

    • Author(s)
      T.Iwai, K.Hatakeyama
    • Journal Title

      Progress in Electromagnetic Research Symposium 2006, Tokyo

      Pages: 378-378

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Study of EM Wave Shielding of Conductive Array Sheet with Ferromagnetic Metal Composite Layer2006

    • Author(s)
      S.Yamamoto, K.Hasegawa, K.Hatakeyama
    • Journal Title

      Progress in Electromagnetic Research Symposium 2006, Tokyo

      Pages: 379-379

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] マイクロ波帯における異方性電波吸収体評価法の検討2006

    • Author(s)
      山本真一郎, 岩井通, 畠山賢一
    • Journal Title

      電子情報通信学会技術研究報告 EMCJ2006-25

      Pages: 41-46

    • NAID

      110007378955

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 異方性電波吸収体の偏波依存性に関する実験的検討2006

    • Author(s)
      山本真一郎, 岩井通, 長谷川剣一, 畠山賢一
    • Journal Title

      電子情報通信学会通信ソサイェティ大会 B-4-13

      Pages: 289-289

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 金属線2次元配列による散乱特性の数値計算"、B、2006.2006

    • Author(s)
      尾井宏明, 長谷川剣一, 岩井通, 畠山賢一
    • Journal Title

      電子情報通信学会通信ソサイェティ大会 B-4-7

      Pages: 283-283

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 人工媒質としてみた金属線配列の比誘電率の数値解析"、75、20062006

    • Author(s)
      尾井宏明, 久納浩和, 長谷川剣一, 岩井通, 畠山賢一
    • Journal Title

      電子情報通信学会技術研究報告 EMCJ2006-75

      Pages: 1-6

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 対角化評価法による異方性電波吸収体評価に関する検討2006

    • Author(s)
      山本真一郎, 青田茂生, 長谷川剣一, 岩井通, 畠山賢一
    • Journal Title

      電子情報通信学会技術研究報告 EMCJ2006-110

      Pages: 69-74

    • NAID

      110006202445

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Negative Permeability Spectra in Permalloy Granular Composite Materials2006

    • Author(s)
      T.Kasagi, T.Tsutaoka, K.Hatakeyama
    • Journal Title

      Applied Physics Letters Vo1.88

    • NAID

      120000880342

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Permeability Spectra of Substituted Barium Ferrite BaFe12-x(Ti0.5Co0.5)x019 in Microwave Frequencies and its Use as EMC Devices2006

    • Author(s)
      T.Tsutaoka, N.Koga, T.Kasagi, K.Hatakeyama
    • Journal Title

      Progress in Electromagnetic Research Symposium 2006, Tokyo

      Pages: 377-377

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 金属線配列材による電磁遮蔽材の線長に関する実験的検討2006

    • Author(s)
      長谷川剣一, 山本真一郎, 畠山賢一, 山内健次
    • Journal Title

      電子情報通信学会総合大会 B-4

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Complex Permeability Spectra of Ferromagnetic Metal Composite Matereals and EMC Applications2006

    • Author(s)
      T.Kasagi, T.Tsutaoka, K.Hatakeyama
    • Journal Title

      Progress in Electromagnetics Research Ymposium 2006, Tokyo

      Pages: 376-376

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Permeability Spectra of Substituted Barium Ferrite BaFe12-x(Tio.5Co0.5) x019 in Microwave Frequencies and its Use as EMC Devices2006

    • Author(s)
      T.Tsutaoka, N.Koga, T.Kasagi, K.Hatakeyama
    • Journal Title

      Progress in Electromagnetics Research Ymposium 2006, Tokyo

      Pages: 377-377

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Frequency Selective Shielding Screen by the Use of Artificial Media2006

    • Author(s)
      T.Iwai, K.Hatakeama
    • Journal Title

      Progress in Electromagnetics Research Ymposium 2006, Tokyo

      Pages: 378-378

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Study of EM Wave Shielding of Conductive Array Sheet with Ferromagnetic Metal Composite Layer2006

    • Author(s)
      S.Yamamoto, K.Hasegawa, K.Hatakeyama
    • Journal Title

      Progress in Electromagnetics Research Ymposium 2006, Tokyo

      Pages: 379-379

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Negative Permeability Spectra in Permalloy Granular Composite Materials2006

    • Author(s)
      T.Kasagi, T.Tsutaoka, K.Hatakeyama
    • Journal Title

      Applied Physics Letters 88

    • NAID

      120000880342

    • Related Report
      2006 Annual Research Report
  • [Journal Article] マイクロ波帯における異方性電波吸収評価法の検討2006

    • Author(s)
      山本真一郎, 岩井通, 畠山賢一
    • Journal Title

      電子情報通信学会技術研究報告 EMCJ2006-25

      Pages: 41-46

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 異方性電波吸収体の偏波依存性に関する実験的検討2006

    • Author(s)
      山本真一郎, 岩井通, 長谷川剣一, 畠山賢一
    • Journal Title

      電子情報通信学会通信ソサイェティ大会 B

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 金属線2次元配列による散乱特性の数値計算2006

    • Author(s)
      尾井宏明, 長谷川剣一, 岩井通, 畠山賢一
    • Journal Title

      電子情報通信学会通信ソサイェティ大会 B

    • NAID

      110006215632

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 人工媒質としてみた金属線配列比誘電率の数値解析2006

    • Author(s)
      尾井宏明, 久納浩和, 長谷川剣一, 岩井通, 畠山賢一
    • Journal Title

      電子情報通信学会技術研究報告 EMCJ2006-75

      Pages: 1-6

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Frequency Selective Shielding Screen by the Use of Artificial Media2005

    • Author(s)
      T.Iwai, K.Hatakeyam
    • Journal Title

      IEICE Transactions on Communications Vol. E88-B,No8

      Pages: 3294-3299

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 人工材料を用いた電磁波吸収・遮へい材の可能性2005

    • Author(s)
      畠山賢一
    • Journal Title

      電子情報通信学会誌 Vol. 88, No. 12

      Pages: 937-942

    • NAID

      110004020510

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 導電性短繊維を分散した紙状電波吸収素材のマイクロ波特性2005

    • Author(s)
      笠坊美紀, 田上貴士, 松村一也, 畠山賢一
    • Journal Title

      電子情報通信学会総合大会 B-4-29

      Pages: 390-390

    • NAID

      110004736366

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Frequency Selective Shielding Screen by the Use of Artificial Media2005

    • Author(s)
      T.Iwai, K.Hatakeyam
    • Journal Title

      IEICE Transactions on Communications VoLE88-B, No8

      Pages: 3294-3299

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Frequency Selective Shielding Screen by the Use of Artificial Media2005

    • Author(s)
      Tohru Iwai, Kennichi Hatakeyama
    • Journal Title

      IEICE Transactions on Communications E88-B, No.8

      Pages: 3294-3299

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 人工材料を用いた電磁波吸収・遮へい材の可能性2005

    • Author(s)
      畠山 賢一
    • Journal Title

      電子情報通信学会学会誌 VOl.88,No.12

      Pages: 937-942

    • NAID

      110004020510

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 金属線配列材による電磁遮蔽材の線長に関する実験的検討2005

    • Author(s)
      長谷川剣一, 山本真一郎, 畠山賢一, 山内健次
    • Journal Title

      電子情報通信学会総合大会 B-4-32

      Pages: 327-327

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Complex Permeability of Permalloy-Ferrite Hybrid Composite Materials2004

    • Author(s)
      T.Kasagi, T.Tsutaoka, K.Hatakeyama
    • Journal Title

      Journal of Magnetism and Magnetic Materials Vol. 272-276

      Pages: 2224-2226

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 人工媒質層を用いる電波吸収体構成法に関する検討2004

    • Author(s)
      岡室智行, 畠山賢一, 山内健次
    • Journal Title

      電子情報通信学会技術研究報告 EMCJ-2004-9

      Pages: 47-52

    • NAID

      110003178549

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 電磁遮蔽の基礎2004

    • Author(s)
      畠山賢一
    • Journal Title

      電磁環境工学情報EMC7月号

      Pages: 113-122

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] ユビキタス時代の電波吸収体-高周波対応の新素材2004

    • Author(s)
      笠坊美紀, 畠山賢一
    • Journal Title

      電磁環境工学情報EMC7月号

      Pages: 24-32

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] シールドの基礎と最近の動向2004

    • Author(s)
      畠山賢一
    • Journal Title

      電子情報通信学会技術研究報告 EMCJ2004-42

      Pages: 27-34

    • NAID

      110003178528

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] A Left-Handed Material Combined YIG and Thin Metal Wire Array2004

    • Author(s)
      T.Tsutaoka, T.Kasagi, K.Hatakeyama, K.Fujimoto
    • Journal Title

      9^<th> International Conference on Ferrites (ICF9)

      Pages: 891-896

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Complex Permeability of Permalloy Composite Materials Under DC Magnetic Field2004

    • Author(s)
      T.Kasagi, T.Tsutaoka, K.Hatakeyama
    • Journal Title

      9^<th> International Conference on Ferrites (ICF9)

      Pages: 653-658

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 人工材料を用いる電磁波吸収・遮蔽材可能性の検討2004

    • Author(s)
      畠山賢一, 蔦岡孝則, 藤本京平
    • Journal Title

      電子情報通信学会通信ソサイェティ大会 BS-1-4

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 方向性電波吸収体評価に関する一手法2004

    • Author(s)
      山本真一郎, 岡室智行, 畠山賢一, 山内健次
    • Journal Title

      電子情報通信学会通信ソサイェティ大会 B-4-51

      Pages: 321-321

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 人工媒質を用いた周波数選択性遮蔽材の検討2004

    • Author(s)
      岡室智行, 山本真一郎, 畠山賢一, 山内健次
    • Journal Title

      電子情報通信学会通信ソサイェティ大会 B-4-1

      Pages: 271-271

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 金属配列人工材料を用いた電磁波吸収・遮蔽材の設計例2004

    • Author(s)
      岡室智行, 山本真一郎, 畠山賢一, 山内健次, 蔦岡孝則
    • Journal Title

      電子情報通信学会技術研究報告 EMCJ2004-111

      Pages: 53-58

    • NAID

      110003206198

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Complex Permeability of Permalloy-Ferrite Hybrid Composite Materials2004

    • Author(s)
      T.Kasagi, T.Tsutaoka, K.Hatakeyama
    • Journal Title

      Journal of Magnetism and Magnetic Materials Vol.272-276

      Pages: 2224-2226

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] A Left-Handed Material Combined YIG and Thin Metal Wire Array2004

    • Author(s)
      T.Tsutaoka, T.Kasagi, K.Hatakeyama, K.Fujimoto
    • Journal Title

      9th International Conference on Ferrites (ICF9)

      Pages: 891-896

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Complex Permeability of Permalloy Composite Materials Under DC Magnetic Field2004

    • Author(s)
      T.Kasagi, T.Tsutaoka, K.Hatakeyama
    • Journal Title

      9th International Conference on Ferrites (ICF9)

      Pages: 653-658

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 人工媒質層を用いる電波吸収体構成法に関する研究2004

    • Author(s)
      岡室智行, 畠山賢一, 山内健次
    • Journal Title

      電子情報通信学会研究会報告 EMCJ2004-7

      Pages: 47-52

    • Related Report
      2004 Annual Research Report
  • [Journal Article] シールドの基礎と最近の動向2004

    • Author(s)
      畠山賢一
    • Journal Title

      電子情報通信学会研究会報告 EMCJ2004-42

      Pages: 27-34

    • NAID

      110003178528

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Complex Permeability of Permealloy Composite Material under DC Magnetized Field2004

    • Author(s)
      T.Kasagi, T.Tshutaoka, K.Hatakeyama
    • Journal Title

      Proceedings of the 9^<th> International Conference on Ferrites ICF-9

      Pages: 653-658

    • Related Report
      2004 Annual Research Report
  • [Journal Article] A Left-handed Material Combined YIG and Thin Metal Wire Array2004

    • Author(s)
      T.Tshutaoka, T.Kasagi, K.Hatakeyama, K.Fujimoto
    • Journal Title

      Proceedings of the 9^<th> International Conference on Ferrites ICF-9

      Pages: 891-896

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 人工材料を用いる電磁波吸収・遮蔽材可能性の検討2004

    • Author(s)
      畠山賢一, 蔦岡孝則, 藤本京平
    • Journal Title

      電子情報通信学会通信ソサイエティ大会講演論文集 BS-1-4

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 人工媒質を用いた周波数選択性遮蔽材の検討2004

    • Author(s)
      岡室智行, 山本真一郎, 畠山賢一, 山内健次
    • Journal Title

      電子情報通信学会通信ソサイエティ大会講演論文集 BS-1-4

      Pages: 271-271

    • Related Report
      2004 Annual Research Report
  • [Patent(Industrial Property Rights)] 電波吸収素材および電波吸収体2005

    • Inventor(s)
      畠山賢一
    • Industrial Property Rights Holder
      畠山賢一
    • Industrial Property Number
      2005-043061
    • Filing Date
      2005-01-24
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Patent(Industrial Property Rights)] 電波吸収を伴う電波遮蔽材2005

    • Inventor(s)
      畠山賢一, 正示明
    • Industrial Property Rights Holder
      正示明
    • Industrial Property Number
      2005-232579
    • Filing Date
      2005-07-13
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Patent(Industrial Property Rights)] 電波吸収を伴う電波遮蔽材2005

    • Inventor(s)
      畠山 賢一, 正示明
    • Industrial Property Rights Holder
      正示明
    • Industrial Property Number
      2005-232579
    • Filing Date
      2005-07-13
    • Related Report
      2005 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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