矩形隧道中的金属支护立柱对电磁波截止频率的影响  

Effects of the metallic pit prop on the electromagnetic wave cutoff frequency in the rectangular tunnel

作　　者：孙继平[1] 魏占永[1] 

机构地区：[1]中国矿业大学北京校区信息工程研究所,北京100083

出　　处：《西安电子科技大学学报》2003年第4期565-568,共4页Journal of Xidian University

摘　　要：把矩形隧道看作矩形波导,利用有限元法分析了矩形隧道中的金属支护立柱对电磁波截止频率的影响,并得到数值结果.金属支护立柱的存在使TE波模的截止频率降低,而使TM波模的截止频率升高,而且金属支护立柱的排数和高度对电磁波模的截止频率也有影响.Effects of the metallic pit prop in a rectangular tunnel on the electromagnetic wave cutoff frequency is analyzed by the finite-element method when the rectangular tunnel is regarded as a rectangular waveguide, with the numerical data obtained. The metallic pit prop in the tunnel lowers the TE wave cutoff frequency and increases the TM wave cutoff frequency. Its rows and height also affects the electromagnetic wave model cutoff frequency.

关 键 词：矩形隧道 有限元法 金属支护立柱 电磁波 截止频率 

分 类 号：TN011[电子电信—物理电子学]