摘要
用有限元法研究了以梯形、半圆拱形、矩形、六边形为基本形状产生的异型波导的截止频率的变化特性,得出截止频率随波导横截面周长的增加而线性减小的结论,并用最小二乘法求出其近似变化曲线,其结果对铁路隧道、煤矿井下巷道等有限空间的无线通信有重要的参考价值.
The changing characteristic of cutoff frequency in abnormity waveguide that is formed from the basic shape of trapezium, semicircle arch, rectangle and hexagon is studied by using finite element method in this paper A conclusion is drawn out that cutoff frequency will decrease linearly with the increasing of crosssection girth of waveguide and using leasttwomultiplication method we also draw out the similar changing curve between them The result has an important reference meaning to wireless communication in finite space of railwaytunnel, mine well tunnel
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2003年第2期210-213,共4页
Journal of China Coal Society
