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一种用于隧道覆盖的超宽带单极子天线
刘聪,薛锋章
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(华南理工大学电子与信息学院，广州 510640)

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。

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

DOI：

基金项目:

An Ultra Wideband Monopole Antenna for the Mantling of Tunnel

LIU Cong,XUE Feng-zhang

(School of Electronic and Information Engineering,South China University of Te chnology,Guangzhou 510640, China)

Abstract:

A new design project is presented, which uses a bidirectional anten na instead of the high cost leak cable in the mantling of tunnel.According t o the radiation characteristics of the planar monop ole antenna, using electromagnetic simulation software Ansoft HFSS,an annular el liptical planar monopole antenna is designed and implemented, w hich has good impedance characteristics at 1.55～10.57 GHz. The relative bandwidth is close to 150%, and the horizontal radiation patterns are t woway distribution along the tunnel. The experimental results agree with th e simulation. It is characterized by compact structure and easy realization. Bes ides, the antenna can be easily installed on the wall. It is also stable and lowcost .

Key words: ultra wideband(UWB) planar monopole bidirectional antenna mantling of tunnel relative bandwidth horizontal radiation pattern