摘要
为实现理论分析和实验结果的相互印证，首先理论分析了单层手性复合材料作为屏蔽体时，材料的电磁特性参数与屏蔽效能之间的关系，给出自由空间中屏蔽效能两种常用的表达形式，并结合圆波导边界条件给出关系式的修正结果；然后模拟研究了在利用圆波导测定手性材料屏蔽效能情况下，电磁参数与屏蔽效能的关系。在导电性基质材料和磁性基质材料情况下，分别利用Matlab软件模拟了介电常数虚部和磁导率虚部对屏蔽效能的影响，为实验结果的理论分析提供一种研究途径。
In order compare tbeory with practice ,the relation between electromagnetic shielding efficiency and material characteristic parameters as plat slab of chiral shielding media is analyzed first. Two normal forms of shielding efficiency calculation formula under free-boundary factor are given and revised under cylindrical waveguide boundary. Then, numerical simulation is done with Matlab in condition of electric and magnetic material. The result of numerical simulation to electromagnetic shielding efficiency,imaginary part of dielectric constant and imaginary of permittivity shows this work is useful to analyze the relation between experiment and theory.
出处
《后勤工程学院学报》
2008年第3期82-86,共5页
Journal of Logistical Engineering University
基金
总后勤部基建营房部资助项目(2004002)
关键词
手性
屏蔽效能
屏蔽系数
圆波导
数值模拟
chiral
shielding efficiency
shielding coefficient
cylindrical waveguide
numerical simulation
