单源单极等离子体天线辐射特性实验研究

为了对等离子体天线进行更深入的研究，必须结合实验获得其真实辐射特性,为此搭建了天线辐射特性测量平台，对单源单极等离子体天线的辐射特性进行了详细的实验研究。通过测量辐射远场区接收天线感应电压数据，得出了天线的辐射方向图、主旁瓣宽度和方向系数;通过与金属天线的辐射场最大值对比，得出了天线的辐射效率;通过测量输入功率和反射功率得出了天线的输入阻抗。此项工作弥补了在等离子体天线研究中实验研究不足的问题。

Experimental study on radiation characteristics of single-source monopole plasma antenna

A series of experiments have been performed to study the radiation characteristics of single-source monopole plasma antenna. The radiation intensity and pattern were measured carefully, and then the antenna’s main lobe beamwidth and direction factor were derived. Through the comparison with metal antenna, the radiation efficiency of plasma antenna was fingered out. The impedance of the antenna was also measured and analyzed. The results show that plasma antenna has a similar radiation pattern and impedance as metal antenna does, and in most cases its direction factor is better than the later’s. However, its radiation efficiency is lower and its stability is weaker.