一种基于超材料的小型化宽带微带天线  

Metamaterial-Based Miniaturized Broadband Microstrip Antenna

作　　者：张世全 全祥锦 曾俊[1] 江克侠 

机构地区：[1]武警工程大学理学院,西安710086

出　　处：《微波学报》2016年第3期15-18,23,共5页Journal of Microwaves

基　　金：国家自然科学基金(61072034;51302318);陕西省自然科学基金(2011JQ6013);武警工程大学基础研究项目(WJY-201404;WJY-201406)

摘　　要：分别将创新设计的＂四方形＂超材料单元和周期条形缝隙蚀刻在普通微带天线的辐射贴片和接地板上,设计了工作在3.67~14.17 GHz的一种小型化宽带高增益微带天线。与原始的天线相比,新型天线的谐振中心频率降低了44.8%,相对带宽从2.7%扩展到243.1%,同时保持了良好的增益。实物测试结果与仿真结果吻合较好。因为超材料的左手传输特性影响了微带天线介质基板的等效媒质参数,导致天线的辐射场主要集中在水平方向,而不是传统的微带天线的垂直方向。The newly designed＂square＂metamaterial units and periodical bar-type apertures were etched on upper patches with ordinary microstrip antenna and the bottom ground plane,respectively,thus working out a miniaturized broadband high-gain microstrip antenna working under 3. 67 ~ 14. 17 GHz. Compared with the original antenna,the resonance center frequency of the new antenna is decreased by 44. 8%; the relative bandwidth is expanded to 243. 1% from 2. 7%while favorable gain is maintained. The material test results and the simulation results are in agreement with each other. The performance improvement is attributed to the fact that the left-handed transmission features of metamaterial affects the equivalent medium parameters of the microstrip antenna dielectric substrate,and the radiation field of the antenna concentrates on the horizontal direction rather than the vertical direction for traditional microstrip antenna.

关 键 词：小型化 微带天线 宽带 超材料 

分 类 号：TN822[电子电信—信息与通信工程]