[摘要] 本文面向煤矿井下地质探测成像的需求，研究设计了一种小型化超宽带天线阵列。天线阵列是由3发4收共7个辐射单元组成的平面阵列，每个天线辐射单元由两个垂直交叉布置的Vivaldi槽线天线组成,可实现双线性极化探测。天线设计使用了HFSS进行了仿真分析，根据仿真结果,Vivaldi槽线天线的电压驻波比<2，增益>3dB。最后在微波暗室内对加工出来的天线实物进行了测试，测试结果表明天线的电压驻波比和增益性能与仿真结果一致，满足地质探测成像的系统设计需求。

[Abstract] In this paper, a miniaturized ultra-wideband antenna array is designed to meet the needs of geological imaging in coal mine. The antenna array is a planar array composed of 7 radiation elements, 3 transmitting and 4 receiving. Each radiation element is composed of two Vivaldi slot line antennas arranged crosswise, which can realize bilinear polarization detection. The antenna design was simulated by HFSS. According to the simulation results, the VSWR was <2 and gain was >3dB every Vivaldi slot. Finally, the antenna was tested in a microwave anechoic chamber, and the test results show that the VSWR and gain performance of the antenna are consistent with the simulation results, which meet the design requirements of geological imaging system.
 

雷达、,地质探测成像