摘要
将弧形微带线、圆形开口谐振环和方型DGS（Defected Ground Structure）组建了一种平面微带型超介质单元,该单元在微波频段内具有等效介电常数和等效磁导率均小于0的特性。同时在双层贴片与接地板之间利用短路针加载技术,设计了一种结构简单的普通微带天线。MATLAB和HFSS软件仿真结果表明,设计的平面型超介质单元在1-10 GHz频段内具有多个等效介电常数和等效磁导率均小于0的频段。将由超介质单元构成的覆层加载到天线辐射贴片前方,构建一种工作频段完全覆盖1.92-1.98 GHz,2.11-2.17 GHz的LTE（Long Term Evolution）超介质天线。仿真结果表明,加载超介质覆层后微带天线的工作频段分别扩展为1.91-2.05 GHz、2.09-2.19 GHz频段,增益也提高了至少2 dB。
A plane metamaterial with characteristics of negative permittivity and negative permeability in microwave frequency bands was built, which was made up of arc-shaped microstrip line, circle split rings resonators and cone-shaped DGS. Besides, a common microstrip antenna was also proposed by loading shorting pins between double layer patches and ground plane. Simulated by MATLAB and HFSS, the metamaterial has multitude frequency bands with characteristics of negative permittivity and negative permeability in 1-10 GHz.With the plane metamaterial cover laying in front of the radiation patch, a metamaterial LTE antenna was formed. Its operating frequency bands absolutely cover 1.92-1.98 GHz and 2.11-2.17 GHz. The simulating results show that the operating frequency bands expand into 1,91-2.05 GHz and 2.09-2.19 GHz, respectively, when the microstrip antenna is filled with metamaterial. Besides, the gain improves at least 2 dB.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2014年第6期54-57,65,共5页
Electronic Components And Materials
基金
中国电信移动网络建设资助项目(No.13YNDS005)
