在传统八木天线理论基础上,设计了一款等离子体八木天线,通过CST软件仿真得到其S11参数、辐射方向图,并根据软件仿真优化参数加工制作出等离子体八木天线原理样机,用高性能矢量网络分析仪对原理样机的S11参数进行了测量。结果表明,当等离子体密度较高时,等离子体八木天线具有很好的定向性以及较高的增益,具有与金属天线可比拟的性能。 Based on the traditional Yagi-Antenna theory, a plasma Yagi antenna was designed and its S11 parameters and radiation pattern were simulated by CST software. The prototype of plasma Yagi-Antenna was fabricated according to the software simulation optimization parameters. The high-performance vector The network analyzer measured the S11 parameters of the prototype. The results show that when the plasma density is high, the plasma Yagi antenna has good directivity and high gain, and has the performance comparable with the metal antenna.