半圆拱形巷道中电磁波传播的等效分析方法  

Equivalent analysis method of electromagnetic waves propagation in semi-circular arched tunnel

作　　者：成凌飞[1] 

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454003

出　　处：《河南理工大学学报（自然科学版）》2007年第5期545-549,共5页Journal of Henan Polytechnic University（Natural Science）

基　　金：高等学校博士学科点专项科研基金资助项目(20030290019)

摘　　要：半圆拱形巷道中电磁波的衰减率无法通过经典波导模型理论得到精确解.采用等效分析方法,利用矩形巷道和圆形巷道的最低衰减模式等效半圆拱形巷道中的最低衰减模式,可以近似分析半圆撕开巷道中电磁波衰减率的状况.等效结果表明,使用等宽等高的矩形巷道的最低衰减模式等效半圆拱形巷道的最低衰减模式,在900 MHz频段附近的误差率很小,2条衰减曲线接近,证明这种等效方法是可行的.Attenuation of electromagnetic waves propagation in a semi - circular arched tunnel can not be found accurately by means of the classical theory method. Based on the equivalent analysis method, the low- est attenuation mode of semi - circular arched tunnel was compared with the lowest attenuation modes of rectangular tunnel and circular tunnel. The result indicates that, at 900 MHz, the error rate of a semi - circular arched tunnel equaling a rectangular tunnel with the same values of the width and the height is very low, the attenuation curves are very close to each other, and the equivalent analysis method is proved feasible.

关 键 词：半圆拱形巷道 电磁波 最低衰减模式 等效分析方法 

分 类 号：TD65[矿业工程—矿山机电]