摘要
基于铁磁性基体与金属线阵列复合结构等效电磁参数的长波近似模型,设计了一种应用铁磁性基体的二维双负材料。根据带有介质包裹层的金属线的散射特性,采取多重散射方法计算了铁磁性基体与金属线阵列复合结构的传输谱;还通过全波仿真提取了单元结构的等效电磁参数。这些数值结果与长波近似模型的理论结果取得了很好的一致,确认了该模型的正确性。通过仿真周期复合体系中的电磁场分布,在所设计的双负频带内观察到了反向波现象,进一步验证了所设计的复合体系的双负特性。
A two-dimensional double negative material（DNM） consisting of ferromagnetic substrate and metallic wire array was designed based on the long-wave approximation model of equivalent electromagnetic parameters（EM）.According to the scattering property of metallic wire covered by a dielectric layer,the transmission spectrum of ferromagnetic substrate and metallic wire array composite structure was calculated by the multiple scattering method（MSM）.The equivalent EMs of modular construction were extracted by full-wave simulation.Both the numerical transmission spectrum and equivalent EMs agree well with the theoretical results of long-wave approximation model,which confirms the correctness of long-wave approximation model.The backward wave propagation phenomenon was observed in the designed double negative band by simulating the electromagnetic field distribution of periodic composite system,which is a further proof for DNM.
出处
《现代电子技术》
2012年第10期155-159,共5页
Modern Electronics Technique
基金
国家自然科学基金项目(61001017
61071007)
高等学校博士学科点专项科研基金项目(20100091120045
20110091110030)
关键词
铁磁性材料
金属线阵列
双负材料
多重散射方法
ferromagnetic material
metallic wire array
double negative material
multiple scattering method
