频率选择表面电磁散射特性分析  

Analysis of Electromagnetic Scattering Characteristics of Frequency Selective Surface

作　　者：李洋[1] 何炳发[1] 张强[1] 王立超[1] 

机构地区：[1]南京电子技术研究所,南京210039

出　　处：《现代雷达》2014年第12期62-65,共4页Modern Radar

摘　　要：叙述了有限尺寸平板频率选择表面(FSS)的散射机理,利用FEM-IE混合算法对有限尺寸(L<10λ)未加载介质的圆环形和Y形孔径及贴片单元平面FSS的单站雷达散射截面积(RCS)进行了仿真计算,并与同尺寸金属板对比,仿真结果得出:FSS的RCS与反射系数、透射系数是有关系的,其RCS主要由表面电场分布决定,对于有限尺寸的平板FSS,边缘截断效应是影响其RCS的主要因素,同时,FSS确实能够达到缩减RCS的目的。A brief introduction of the scattering characteristics of finite plane frequency selective surface（FSS） is given. With re- gard to the free-standing Y-shape and annular FSS that are both in aperture and patched pattern, the simulation and computation of the monostatic RCS of the models above are finished. Compared with the same-sized metallic plate respectively, conclusions can be drawn as follows ： the RCS of plane FSS has something with the reflection and transmission properties, and its RCS is mainly deter- mined by its E-field distribution. As to the finite plane FSS, edge effect makes a great contribution to its RCS, and at the same time, FSS does do well in RCS reduction.

关 键 词：频率选择表面 散射截面积 边缘效应 

分 类 号：TN958[电子电信—信号与信息处理]