In order to solve the problem of cutoff frequency of rectangular ridged waveguide,effects of trains on cutoff frequency in rectangular tunnel are analyzed by using ridged waveguides method.

　
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  • 為求解矩形正脊波導的截止頻率問(wèn)題,把求解礦井隧道中存在列車(chē)時(shí)的電磁波傳播特性問(wèn)題歸結為求解矩形正脊波導截止頻率的問(wèn)題。
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