In this paper, the equivalent cylindrical conductor model has been proposed to calculate transient impedance of track circuits.

文中采用等效圆柱形导体模型，计算铁轨的暂态内阻抗。

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Then the radiation characteristics of slot antennas located on a cylindrical conductor are analyzed using Uniform geometry theory of diffraction (UTD).

接着运用一致性绕射理论(utd)分析了导体圆柱上方缝隙天线的辐射特性。

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The equatorial plane patterns of the slot antennas located on a cylindrical conductor are calculated through the electric field calculation results of the four field area.

通过对各个场区计算结果的综合，得到导体圆柱上缝隙天线的赤道面方向图。

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