车载超宽带电阻加载单极子天线系统研究  

Research on an UWB Resistor-Loaded Monopole Antenna System Mounted on Vehicle

作　　者：李雪萍[1,2] 王立[1] 甘利萍[1] 闫静[1] 

机构地区：[1]河南师范大学电子与电气工程学院,河南新乡453007 [2]河南省高等学校电磁波特征信息探测重点学科开放实验室,河南新乡453007

出　　处：《雷达科学与技术》2016年第6期665-669,共5页Radar Science and Technology

基　　金：国家自然科学基金(No.61172017);河南省科技攻关计划(高新领域)项目(No.162102210266);河南师范大学博士科研启动基金(No.5101029170276)

摘　　要：针对实际工程应用中安装在探测车尾部的表层穿透雷达天线的需求,设计了一种中心频率为60MHz的超宽带车载电阻加载单极子天线。对整个天线系统的电压驻波比、辐射方向图和时域辐射特性进行了研究,分析了介质的电特性参数(介电常数和损耗正切)对雷达系统探测能力的影响,根据仿真设计结果制作了一套收发天线样机,并将样机安装在探测车上,在冰川进行了外场探测试验。仿真和实测结果表明,所设计的天线具有较低的电压驻波比、良好的辐射特性以及较小的振铃,并且质量轻、结构简单、易于车载安装,能够满足车载表层穿透雷达的需求。An ultra-wideband（UWB） resistor-loaded monopole antenna working at 60 MHz center frequency for a practical vehicle-mounted ground penetrating radar（GPR） is designed. The VSWR, radiation patterns and time-domain waveforms of the antenna system are studied, and the effects of the electrical properties of the layer, i. e. , permittivity and loss tangent on the detection range are also analyzed. The antenna system is manufactured and mounted on a vehicle according to the simulation results. Then it is tested in the Laohugou Glacier No. 12 of Gansu province. The simulated and measured results show that the designed antenna has a low voltage standing wave ratio（VSWR）, good radiation characteristics and small late-time ringing. It has light weight and is easy to install, which can satisfy the requirements of the GPR system.

关 键 词：表层穿透雷达 单极子天线 电阻加载 车载 

分 类 号：TN957.2[电子电信—信号与信息处理]