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1998 Fiscal Year Final Research Report Summary

Design of BFN with Application of 2D-DFT to 1D-DFT Equivalent Transformation Theory

Research Project

Project/Area Number 09450153
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 InstitutionNagoya Institute of Technology

Principal Investigator

INAGAKI Naoki  Nagoya Inst.Tech., Dept.Eng., Professor, 工学部, 教授 (30016464)

Co-Investigator(Kenkyū-buntansha) KIKUMA Nobuyoshi  Nagoya Inst.Tech., Dept.Eng., Assoc.Professor, 工学部, 助教授 (40195219)
Project Period (FY) 1997 – 1998
Keywords1D-DFT / 2D-DFT / Sampling / Multiple Beam Array / BFN / Shelton's Method / Diversity Antenna / Microstrip Antenna
Research Abstract

Following theoretical results have been obtained concerning mainly the equivalent transform theory from 2D-DFT to 1D-DFT with the new concept of simultaneous sampling.
1.2D-DFT to 1D-DFT transformation theory has been applied to synthesize a BFN (beam forming network) of multiple beam array antennas.
2. Mathematical basis has been given to Shelton's method of feeding planar multiple beam array antennas by a BFN for linear multiple beam array antennas.
3. The traditional design of BFN based on experience has been given a theoretical support.
4. The mutual coupling effects between elements have been clarified by the ICT theory when the designed array antenna have been used as adaptive array antennas.
5. A cylindrical antenna as the elements has been numerically analyzed with a realistic modeling, and the usefulness has been demonstrated.
6. BFNs with Light wave device have been proposed, which are designed by geometrical optics and are frequency independent. It has been shown that our theory can be applied to the design this kind of BFN.
Following results have been obtained experimentally.
1. From indoor experiments for manufactured array antennas used as a directive diversity antenna, the improve- ment factor of BER characteristics by diversity reception has been known.
2. Microstrip antennas are small size, conformal, light weight, and are promising to be used as portable antennas, but are frequency sensitive in nature. The new type of log periodic microstrip antennas have been developed whose bandwidth have been increased by a factor of several tens.

  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] C.Wei: "The Method of Matrix-Order Reduction and Its Application to Electromagnetic Problems" IEICE Trans.Communication. E80-B. 606-616 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.I.Imoro: "An Improved Circuit Theory for the Analysis of Longer and Arbifrary Co-Planar Dipale Arrays" Proc.ICAP, UK. 1. 221-224 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] C.Wei: "Dimension-descent technique for electromag, prob." IEE Proc.-Microw.Antennas Propag.144. 372-376 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.I.Imoro: "An Efficient ICT Method for Analysis of Co-planar Dipale Antenna Arrays of Acbitrary Lengths" IEICE Trans,Communication. E81-B. 659-667 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 尾関 英克: "近接素子配列形準対数周期マイクロストリップアンテナ" 電気学会論文誌C. 119-C. 51-56 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 紀平 一成: "信号の周期定常性を利用した相関拘束付きCMAアダプティブアレー" 電子情報通信学会 論文誌. J82-B. 251-259 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] C.Wei, N.Inagaki and W.Di.: ""The Method of Matric-Order Reduction and Its Applications to Electromagnetic Problems, "" IEICE Trans.Communication. E80-B,4. 606-616 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.I.Imoro, I.Aoki, N.Inagaki and N.Kikuma: ""An Improved Circuit Theory for the Analysis of Longer and Arbitary Co-Planar Dipole Arrays, "" Proc.ICAP,UK. 1. 221-224 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N.Kikuma, N.Tuskamoto and N.Inagaki: ""Improving signal Capture of CMA Adaptive Array Using Weight Norm Control, "" Proc.ICAP,UK. 1. 502-505 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] C.Wei, N.Inagaki and W.Di: ""Dimension-descent technique for electromagnetic problems, "" IEE Proc.-Microw.Antennas Propag.144. 372-376 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.I.Imoro, I.Aoki, N.Inagaki and N.Kikuma: ""An Efficient ICT Method for Analysis of Co-planar Dipole antenna Arrays of Arbitary Lengths, "" IEICE Trans.Communication. E81-B,3. 659-667 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N,Kikuma, K.Kihira and N.Inagaki: ""Correlation-Constrained CMA Adaptive Array Using Cyclostationary Signal Properties, "" Proc.IEEE APS Int'l Symposium. 1. 376-379 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] W.Di, N.Inagaki and N.Kikuma: ""Hallen Type Integral Equation Analysis of a Cylindrical antenna with Finite Gap Excitation, "" KJJC-AP/EMC/EMT'98 Proc.1. 41-44 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] I.Aoki, N.Inagaki and N.Kikuma: ""Application of Improved Circuit Theory to Corner Reflector Antenna Analysis, "" KJJC-AP/EMC/EMT'98 Proc.1. 45-48 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Ozeki, S.Hayashi, N.Inagaki and N.Kikuma: ""Quasi Log-Periodic Microstrip Antenna with Closely Coupled Elements, "" T.IEEE Japan. 119-C,1. 51-56 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Kihira, N.Kikuma and N.Inagaki: ""Correlation Constrained CMM Adaptive Array Using Cyclostationary Signal Properties, "" IEICE Trans.J82-B,2. 251-259 (1999)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-12-08  

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