设计了一种CPW馈电的平面宽缝天线。采用Koch分形技术拓宽了天线的带宽，使用HFSS软件对CPW馈电线和矩形匹配枝节的尺寸和位置进行了优化设计。对制作的宽缝天线进行了回波损耗、方向图和增益的测试。测试结果表明，天线的带宽达到14~5.8 GHz，带内增益波动小于3 dB。该天线系统的研究在功率检测、5G通信、雷达系统等领域有较强的拓展性和应用前景。

A CPW-fed planar wide-slot antenna was designed. The Koch fractal technology was used to broaden the bandwidth of the antenna, and the HFSS software was used to optimize the size and position of the CPW feeder and the rectangular matching stub. The return loss, the pattern and the gain of this wide slot antenna was measured. The measured result showed that the bandwidth of the antenna reached 14~5.8 GHz, and the in-band gain fluctuation was less than 3dB. The research of this antenna system had strong expansibility and application prospects in power detection, 5G communication, radar system, etc.