平面电磁波在良导体表面掠射实验的研究

Research on the experiment of plane electromagnetic wave grazing on the conductor surface

详细介绍了不同线极化方式的平面电磁波在良导体表面的反射特性实验,重点分析了当电磁波以入射角为90°掠射时的两种不同的实验现象:垂直入射面极化波以90°入射角掠射时,反射场与入射场大小相同,方向相反,喇叭天线接收到的合成场近似为零;平行入射面极化波以90°入射角掠射时,反射场为零,合成场与入射场大小相同。通过对简单的验证性实验的进一步思考及深入实验,使其演变为启发性实验,提高了实验教学效果。

An experiment of the reflection characteristic of plane electromagnetic wave in different polarization on the perfect conductor surface is introduced in detail. Two different experimental phenomena are analyzed when the incident angle is 90°. For the vertical incident plane polarized wave,the reflection wave field and the incident field have the same intensity with the opposite phase,thus the synthesis field received by horn antenna approximates zero. For the horizontal incident plane polarized wave,there is no reflection wave field,so the synthesis field received is just the incident field.Through further research on the simple verification experiments,it becomes a heuristic experiment.Meanwhile,the experimental teaching effect is also improved.