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首页> 外文期刊>Antennas and Propagation, IEEE Transactions on >Electromagnetic Mode Theory of Periodically-Loaded Oversized Imperfect Waveguide and Its Application to the Propagation of Radio Waves in Long Wall Coal Mining Face Tunnels
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Electromagnetic Mode Theory of Periodically-Loaded Oversized Imperfect Waveguide and Its Application to the Propagation of Radio Waves in Long Wall Coal Mining Face Tunnels

机译：周期性加载超大尺寸不完全波导的电磁模理论及其在长壁采煤工作面巷道无线电波传播中的应用

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摘要

A long wall coal mining face tunnel is idealized as a periodically-loaded oversized imperfect rectangular waveguide. A rigorous solution for the electromagnetic field distribution is presented. The theoretical analysis is mainly concentrated on obtaining the characteristic equations for HEM and TE modes and reductions are carried out to obtain the mode equations in a form suitable for the numerical computation. The propagation constant of the TE $_{{rm m}0}$ mode is computed. The calculated and measured propagation attenuation rates of the dominant TE $_{10}$ mode are compared for a scaled model. They are in good agreement, showing the validity of the theory.
机译：长壁采煤工作面隧道被理想化为周期性加载的超大尺寸不完美矩形波导。提出了电磁场分布的严格解决方案。理论分析主要集中在获得HEM和TE模态的特征方程式上，并进行简化以得到适合于数值计算的形式的模态方程式。计算TE $ _ {{{rm m} 0} $模式的传播常数。对于定标模型，比较了占优势的TE $ _ {10} $模式的计算和测量的传播衰减率。它们非常吻合，显示了该理论的有效性。

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