基于FDTD方法的集成材料特性分析

Characteristic analysis of composite material using FDTD method

针对近年来被广泛关注的集成材料,采用时域有限差分法(FDTD)和Flo-quet定理分析集成材料(有效介电常数为负数)对电磁波的反射和透射特性,并与已有的实验数据进行了比较,验证了该方法的可行性。在此基础上,进一步数值模拟分析了将集成材料作为防护微波信号的屏蔽材料的可行性,以及将集成材料的独特性质拓展到其他频段范围的可能性。为集成材料的广泛应用提供了理论依据。

The transmission and reflection coefficient of composite material with negative permittivity are analyzed by using FDTD method and Floquet theorem, and the simulation results are validated by comparing with the experiment results. Furthermore, the possibility of taking composite material as electromagnetic shielding layers to screen microwave signal and expanding its application in else frequency bands are discussed on the basis of the numerical results.