摘要
在未考虑超材料中结构单元间耦合作用的情况下,传统传输/反射法在提取整体材料的等效电磁参数时会出现误差.针对该问题,对超材料中不同方向单元耦合及其补偿方法进行了讨论,提出一种基于双向耦合补偿的改进传输/反射法.与传统方法相比,该方法可有效预测超材料中多个谐振区域,更准确地提取整体材料参数;其仿真结果能与Ansoft HFSS软件计算结果很好地吻合;由于采用了局部建模,显著降低了其相应的计算时间及硬件要求.
Ignoring the coupling effect between metamaterial unit cells,traditional transmission/reflection method shows error in calculating the effective electromagnetic parameters.To address this issue,this paper discusses the coupling and compensation method of unit cells in different directions,and proposes an improved transmission/reflection method based on bidirectional coupling compensation.The results of this improved method indicate that comparing with traditional methods,this method can effectively predict multiple resonant regions,and calculate electromagnetic parameters of the whole material more accurately.The simulation results fit well with the results by using Ansoft HFSS software,but the corresponding computing time and hardware requirements of this method are obviously reduced due to the application of local modeling computation.
出处
《电波科学学报》
EI
CSCD
北大核心
2014年第1期40-46,共7页
Chinese Journal of Radio Science
基金
总装预研项目(513250201
513250101)
关键词
超材料
传输
反射法
S参数
耦合补偿
metamaterial
transmission/reflection method
Sparameter
coupling compensation
