针对放置于柱形金属基座的普通圆极化微带天线,利用HFSS仿真分析了金属基座厚度对天线的驻波、增益、轴比等特性的影响,结果表明柱形基座的厚度变化不会对驻波产生显著影响,对增益会产生一定影响,但对轴比会产生比较显著的影响,通过选择合适的基座厚度可以在一定程度上改善天线的增益特性和轴比特性,同时进行了实验验证,该结果可以为实际设计微带天线提供参考依据。 For the ordinary circularly polarized microstrip antenna placed on a cylindrical metal base, the influence of the thickness of the metal base on the characteristics of the antenna such as the standing wave, the gain and the axial ratio is analyzed by the HFSS simulation. The results show that the change of the thickness of the cylindrical base Will not have a significant impact on the standing wave, will have some impact on the gain, but the axial ratio will have a more significant impact, by selecting the appropriate base thickness can be some degree to improve the antenna gain characteristics and axial ratio characteristics, at the same time The experimental verification is carried out, which can provide a reference for the actual design of the microstrip antenna.