超宽带小型化探地雷达天线的设计

内容简介：通过对蝶形偶极子天线复合加载的方式形成一种小型化的探地雷达天线，多种加载方式的引入不但使天线具有宽频带的性能，而且设计的天线尺寸与理论计算尺寸相比也大大减小。在天线后方引入背腔设计，增加了天线的方向性和抗干扰能力。所设计的天线具有1．5～4 GHz的频带宽度，且天线的方向性良好。设计的天线已成功应用于LTD探地雷达2．2 GHz天线系统和3 GHz的液态危险品检测天线系统中。

Abstract：A kind of miniaturized GPR antenna was designed through complex loading to the bow-tie dipole. The introduction of multi-ple loading methods not only makes the antenna acquire the performance of broadband but also greatly decreases the size of antenna compared with the theoretical calculation size. By introducing back cavity behind the antenna, the directivity and anti-jamming capabili-ty of the antenna are enhanced. The designed antenna possesses a 1.5 GHz~4 GHz frequency band width and a good direction. The de-signed antenna is successfully applied to the antenna system of 2.2 GHz LTD series of GPR. This designed antenna can be also used in the dangerous liquid goods inspection system of 3 GHz LTD series of GPR.

作者：彭宇, 王蕾, 郭福强, 胡通海,

关键词：探地雷达, 蝶形偶极子, 天线, 背腔设计,