一种用于隧道覆盖的超宽带单极子天线  

An Ultra Wideband Monopole Antenna for the Mantling of Tunnel

作　　者：刘聪[1] 薛锋章[1] 

机构地区：[1]华南理工大学电子与信息学院,广州510640

出　　处：《电讯技术》2010年第10期69-72,共4页Telecommunication Engineering

摘　　要：通过分析目前隧道或地铁工程中经常使用的泄漏电缆覆盖成本较高的不足,提出了一种新的设计方案——双向天线覆盖,并且根据平面单极子的辐射特性,采用电磁仿真软件Ansoft HFSS建模仿真,设计并实现了一款在1.55～10.57 GHz频带内具有良好阻抗特性的环形椭圆平面单极子天线,其相对带宽接近150%,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,安装方式简单可靠,造价成本低。A new design project is presented, which uses a bidirectional antenna instead of the high cost leak cable in the mantling of tunnel. According to the radiation characteristics of the planar monopole antenna, using electromagnetic simulation software Ansoft HFSS, an annular elliptical planar monopole antenna is designed and implemented, which has good impedance characteristics at 1.55 - 10.57 GHz. The relative bandwidth is close to 150%, and the horizontal radiation patterns are two-way distribution along the tunnel. The experimental results agree with the simulation. It is characterized by compact structure and easy realization. Besides, the antenna can be easily installed on the wall. It is also stable and low-cost.

关 键 词：超宽带 平面单极子双向天线 隧道覆盖 相对带宽 水平面辐射方向图 

分 类 号：TN82[电子电信—信息与通信工程]