在Vivaldi天线的基础上,分析了天线渐变槽线结构对天线工作带宽的影响,提出了在侧翼加载和尾部加抗流栅栏的方法.测试结果表明:天线在320 MHz～1 GHz和1.16GHz～1.3 GHz的频带内驻波小于2,在超短波的应用频带内驻波小于1.2,是一种高增益小型化宽频带天线.%Based on the vivaldi antenna, we analyze the impendance bandwidth of the antenna affected by the tapered slot-line structure, and propose the method for improving and optimizing the antenna's structure by the way of adding slots on the metal patch. The results of the simulated data and measured data show that the VSWR is less than 2, with the bandwidth ranging from 320 MHz to 1 GHz, and between 1.16 GHz and 1.3 GHz. At the same time, the VSWR of the application bandwidth is 1.2. So the Vivaldi antenna has the excellent properties of high gain, miniaturization and wide-band.
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