首先假定平面电流源位于任一层介质中，然后利用谱域法和波矩阵技术，通过求解矢量电场波动方程，推导出了多层介质中谱域格林函数的解析公式，将所得公式应用于多层介质微带天线（它包括多层介质覆盖和多层基片微带天线）的分析中，得到了天线辐射场的理论计算公式，分析计算了一工程实例，实验结果证实了理论计算的正确性。 First of all, assuming that the planar current source is located in any layer of medium, the analytic formula of the Green’s function of the spectral domain in multi-layer medium is deduced by solving the vector electric field wave equation by using the spectral domain method and the wave matrix technique. Layer dielectric microstrip antenna (which includes multi-layer dielectric covering and multi-layer substrate microstrip antenna), the theoretical calculation formula of antenna radiation field is obtained, an engineering example is analyzed and calculated, and the experimental results confirm that the theoretical calculation is correct Sex.