摘要
漏泄同轴电缆外导体上周期开缝的结构能够有效地将射频能量均匀分布在一定的范围内 ,并延伸电波的作用距离 ,因此漏缆被广泛应用于隧道、地道中的无线通信。本文对架设有漏缆的铁路隧道中火车天线所在位置处的电波情况进行分析 ,不仅考虑了不同频率下的电场分布图 ,还分析了不同隧道壁材质对电波分布的影响。
The leaky coaxial cable with periodic slots in the outer conductor can spread the RF energy within confined areas sufficiently and extend the effect distance. Therefore, they are widely used in tunnels and underpasses for wireless communications. In this paper, the properties of the electrical field at the location of the antenna on the roof of the train along a leaky coaxial cable installed in a tunnel are analyzed. The field distributions of a cable with difference frequencies are considered and the effects of material of the tunnel walls on the field distributions are discussed.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2002年第2期69-73,共5页
Journal of the China Railway Society
基金
国家自然科学基金资助项目 (60 0 71 0 1 2 )
关键词
漏泄同轴电缆
磁偶极子
单模辐射
电场分布
leaky coaxial cable
magnetic dipole
mono radiation mode
electrical field distributions
