微波矩孔衍射仿真与实验

The Experiments and Simulations of Rectangular Aperture Diffraction in Microwave Band

从基尔霍夫标量式出发,在振幅零级近似和相位一级近似条件下,由Mathematica仿真计算获得微波经不同尺寸矩孔的衍射分布,并在微波光学实验仪上进行实验验证,获得了从夫琅禾费衍射向菲涅尔衍射转化的衍射花样,实验与仿真结果较为吻合。

Based on Kirchhoff＇s diffraction formula, under zero order approximation of amplitude and first approximation of phase conditions, the diffraction patterns of various rectangular aperture size are obtained in microwave band by mathematica. Meanwhile, the experimental results which are carried out on microwave spectrometer are in accord with that of simulations,either in Fraunhofer＇s diffraction or Fresnel＇s diffraction