| 基于电阻加载技术的超宽带天线系统设计与实验 |
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| 作者单位： | ;1.河南师范大学电子与电气工程学院河南省高校电磁波特征信息探测重点学科开放实验室 |
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| 摘 要： | 针对安装在探测车尾部的超宽带天线的需求,研制了一种基于电阻加载技术的超宽带天线系统.该天线系统由两个完全相同的电阻加载单极子天线组成,其中一个天线用于发射信号,另一个用于接收信号.采用时域有限差分方法对整个收发天线系统的电性能进行了仿真模拟,并制作了一套收发天线样机,安装在探测车上,在电波暗室中进行了测试.分析研究了介质的电特性参数对雷达系统探测能力的影响,并对冰川进行了探测试验.测试与仿真模拟结果表明:该天线具有较低的电压驻波比和良好的辐射特性以及较小的拖尾,可以满足超宽带雷达的实际工程应用要求.
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| 关 键 词： | 超宽带 单极子天线 电阻加载 时域特性 |
Optimization and Experiment of UWB Resistor-Loaded Monopole Antenna System |
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| Institution: | ,College of Electronic and Electrical Engineering,Henan Key Discipline Open Laboratory of Electromagnetic Wave Detecting,Henan Normal University |
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| Abstract: | An ultra-wideband resistor-loaded monopole antenna for the vehicle-mounted Ground Penetrating Radar(GPR) is designed.The antenna system includes two identical monopole antennas:One is used for transmission,and the other is for reception.The electrical characteristics of the antenna system are analyzed and designed by Finite-Difference Time-Domain(FDTD) Method,and the antenna prototype is manufactured and measured in an anechoic chamber.Then the effects of the electrical characteristics of the layer on the radar detection ability of the system are studied.Finally the system is tested in the Glacier.It is concluded that the antenna system has good time domain characteristics and small late-time ringing by comparing the simulated results with measured results,which is suitable for the needs of the radar system. |
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| Keywords: | ultra-wideband monopole antenna resistive loading time domain characteristics |
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