摘要
目前隧道或地铁工程中使用的泄漏电缆覆盖的成本较高,文中提出了一种新的设计方案——双向天线覆盖,并且根据单极子的宽频带特性,采用电磁仿真软件AnsoftHFSS建模仿真,设计并实现了一款在1.392～4.500GHz频带内具有良好阻抗特性的平面单极子天线,其相对带宽超过100%,水平面辐射方向图是沿着隧道双向分布的,而且实测结果与仿真数据相吻合。该天线结构简单,容易实现,采用壁挂形式,安装简单可靠,造价成本低。
A new design project is presented,which is using a bidirectional antenna in the mantling of the tunnel,by analyzing the disadvantages of the high cost that is usually using the leak cable in the mantling of the tunnel at present.What is more,on the basis of the broadband characteristics of the monopole antenna,using electromagnetic simulation software Ansoft HFSS to model and run,a planar monopole antenna is designed and implemented,which has good impedance characteristics at the band of 1.392 ～ 4.500GHz.The relative bandwidth is more than 100%,and the horizontal radiation patterns are two-way distribution along the tunnel.The experimental results coincide with the simulation.It is characterized by compact and easily realized size.Besides,the antenna is installed on the wall.It is easy,stable and low-cost.
出处
《微波学报》
CSCD
北大核心
2010年第6期50-53,共4页
Journal of Microwaves
关键词
隧道覆盖
宽频带
单极子天线
Mantling of the tunnel
Broadband
Monopole antenna
