说明：  微带贴片天线的MATLAB仿真程序。书《MATLAB模拟的电磁学时域有限差分方法》中的一个课后习题，仿真一个简单的矩形微带天线，程序计算了天线的回波损耗，画出了其方向图。内附HFSS工程文件，可仿真对比。
(Matlab simulation program of microstrip patch antenna. Book "matlab simulation of electromagnetic finite difference time domain method" in an exercise after class, simulation of a simple rectangular microstrip antenna, the program calculates the return loss of the antenna, draw its pattern. HFSS engineering documents are attached for simulation and comparison.)