FVTD Method and Ray Tracing Method of Electromagnetic Wave Propagation in Two-Dimensional Tunnels with a Crank Branch

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  • KAWANO Eichi
    Communication and Computer Engineering Graduate School, Fukuoka Institute of Technology
  • MATSUNAGA Toshiaki
    Communication and Computer Engineering Graduate School, Fukuoka Institute of Technology
  • OGATA Kazuyoshi
    Communication and Computer Engineering Graduate School, Fukuoka Institute of Technology
  • IWASAKI Hirokazu
    Communication and Computer Engineering Graduate School, Fukuoka Institute of Technology
  • UCHIDA Kazunori
    Communication and Computer Engineering Graduate School, Fukuoka Institute of Technology

Bibliographic Information

Other Title
  • クランク形分岐をもつ2次元トンネル内電波伝搬のFVTD法とレイ・トレース法
  • クランクケイ ブンキ オ モツ 2ジゲン トンネル ナイ デンパ デンパン ノ FVTDホウ ト レイ トレースホウ

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Abstract

Mobile telecommunications such as portable telephones are important roles in information societies. There are, however, many shelters like walls, which affect electromagnetic wave propagation in underground streets or inside of buildings. Those problems must be solved to use mobile equipment comfortably. Electromagnetic waves more decrease in tunnels than free space, especially at the direction of the bents and branches. FVTD method and ray tracing method are applied to the numerical analysis of electromagnetic waves propagating in two-dimensional tunnels, which have crank branches using a line source in this paper. We compared the numerical results of those two methods. In addition, we measured the electric field distribution when we assumed that the line source is in a arbitrary position and compared them with the numerical results of FVTD and ray tracing methods.

Journal

  • ITE Technical Report

    ITE Technical Report 25.6 (0), 1-4, 2001

    The Institute of Image Information and Television Engineers

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