基于左手材料的小型化差分微带天线  

Compact Differential Microstrip Antenna Based on LHMs

作　　者：韩丽萍[1] 赵亚娟[1] 曲美君[1] 

机构地区：[1]山西大学物理电子工程学院,山西太原030006

出　　处：《测试技术学报》2014年第2期163-167,共5页Journal of Test and Measurement Technology

基　　金：国家自然科学基金资助项目(61172045);国家基础科学人才培养基础资助项目(J1210036);山西省自然科学基金资助项目(2012011013-3)

摘　　要：本文提出了一种应用于WiMAX的小型化差分微带天线,并通过在辐射贴片刻蚀U型缝隙的方法实现天线的小型化.与传统的半波长天线相比,该天线的尺寸为15 mm×15 mm(0.38λg×0.38λg).为了改善天线的带宽性能,设计了一种新型的哑铃型开口环金属线复合周期结构的左手材料,并将左手材料作为天线的覆层.仿真和测量结果表明:覆层左手材料的小型化差分微带天线的带宽为8.5%(3.4 GHz^3.7 GHz),峰值增益为3.8 dBi.A compact differential microstrip antenna for WiMAX application is proposed in the pa- per. The miniaturization is realized by etching U-shaped slot in the radiating patch. Compared with the conventional half-wavelength antenna, the antenna has a compact size of 15 mm ×15 mm （0.38 λg× 0.38λ）. In order to improve the bandwidth of the antenna, a novel periodic structure of left-handed materials （LHMs） is designed to cover the antenna. The LHMs is composed of dumbbell split rings and a metal wire. The simulated and measured results show that the bandwidth of the com- pact differential antenna with LHMs is 8.5% （3.4 GHz--3.7 GHz）, and the peak gain is 3.8 dBi.

关 键 词：小型化 差分天线 带宽 左手材料 峰值增益 

分 类 号：TN823.24[电子电信—信息与通信工程]