【摘要】 利用十字图案与自身旋转45°叠加得到的图形为基本周期单元,设计了一种新型周期图案的频率选择表面(FSS)。利用模式匹配法对常用十字周期图案FSS和这种新型周期图案FSS进行了理论上的对比分析,同时进行了实验测试,测试与理论仿真基本一致,结果表明:两者都具有对不同偏振方式正入射波的稳定性,但是优化的新型周期图案FSS的大角度入射偏振稳定性及中心频率的角度稳定性都优于常用十字周期图案FSS,对于不同的投射角度,中心频率处的传输损耗接近为零。更多还原

【Abstract】 A novel frequency selective surface(FSS)using the superimposition of conventional cross element and its own 45°rotated pattern as basic unit is presented in this paper.By applying the mode matching technique,the novel element FSS is compared with the traditional cross element theoretically.The experiment is carried out.The measured curve shows a good agreement with the emulated curve.It is shown that both structures have polarization independence for normal incidence,but the modified structure has better polarization independence for large angle incidence and angle independence than the traditional cross element FSS,and the transmission loss at the center frequency is nearly zero for different incident angles.更多还原