摘要
为分析蜂窝结构吸波材料在电磁波斜入射条件下的反射特性,首先基于长波长近似条件下的强扰动理论,得到蜂窝结构吸波材料的等效电磁参数;再利用各向异性分层介质条件下的横向场传播的本征波解,推导出蜂窝结构吸波材料对斜入射电磁波的反射系数公式;进而得到蜂窝结构吸波材料的反射率随入射角的变化关系。反射率的计算结果表明:在特定入射角情况下,对于不同的蜂窝高度,吸收剂存在最优厚度,可使其反射率最小。研究结果对蜂窝结构吸波材料的优化设计具有一定意义。
In order to analyze the reflection characteristic of honeycomb-structured absorbing materials on the condition of oblique incidence of electromagnetic wave,the equivalent electromagnetic parameters of honeycombstructured absorbing materials can be calculated based on the strong fluctuation theory on the approximate condition of long wavelength,then with the aid of the solution of eigen waves of the transverse field propagation in layered anisotropic media,the reflection coefficient on the condition of oblique incidence of honeycombstructured absorbing materials can be deduced,and the relation between reflectivity of honeycomb-structured absorbing materials and the incidence angle is also obtained.The calculation result of reflectivity shows that,on a definite incidence angle,there is an optimal thickness of absorbent with different height of honeycomb to minimize the reflectivity.This result is of certain significance for the optimization design of honeycomb-structured absorbing materials.
出处
《航空工程进展》
2013年第1期119-125,133,共8页
Advances in Aeronautical Science and Engineering
关键词
蜂窝结构吸波材料
等效电磁参数
各向异性介质
斜入射
反射系数
honeycomb-structured absorbing materials
equivalent electromagnetic parameters
anisotropic medium
oblique incidence
reflection coefficient
