摘要
为求解矩形正脊波导的截止频率问题,把求解矿井隧道中存在列车时的电磁波传播特性问题归结为求解矩形正脊波导截止频率的问题。由矩形正脊波导中主模TE10波模的分布结构特征,用准静态方法近似的计算出等效电容和等效电感,从而计算出谐振频率,也就是矩形正脊波导的截止频率。并通过计算结果分析了矿井中列车的位置、高度和宽度对截止频率的影响。
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. According to the field plot of TE10 wave mode in rectangular ridged waveguide, the equivalent capacitance and equivalent inductance are approximately calculated by quasi-static method, and the resonant frequency which is namely cutoff frequency is derived. The effect of the cutoff frequency on the train＇s height, width and location in rectangular tunnel is studied through calculation results.
出处
《辽宁工程技术大学学报（自然科学版）》
EI
CAS
北大核心
2006年第2期243-245,共3页
Journal of Liaoning Technical University (Natural Science)
基金
2003年度高等学校博士学科点专项科研基金资助项目(20030290019)
关键词
矩形隧道
矩形正脊波导
边缘电容
谐振频率
截止频率
rectangular tunnel
rectangular ridged waveguide
fringing capacitance
resonant frequency
cutoff frequency
