加载新型复合左右手传输线单元的宽带单极子天线设计  

A Broadband Monopole Antenna Loaded with a Novel CRLH-TL Unit Cell

作　　者：李海鹏[1] 王光明[1] 周成[1] 宗彬锋[1] 

机构地区：[1]空军工程大学防空反导学院,西安710051

出　　处：《微波学报》2015年第1期22-25,30,共5页Journal of Microwaves

基　　金：国家自然科学基金(61372034)

摘　　要：提出了一种新颖的一维复合左右手传输线(CRLH-TL)单元,并将其加载到传统微带馈电的单极子天线上,设计出一种宽带的变形单极子天线。该宽带天线工作在1.67~2.67GHz,相对带宽达到了46%,有效地覆盖了DCS(Digital Cellular System,1710~1880MHz)、PCS(Personal Communication Service,1850~1990MHz)、Wi-Fi(Wireless Fldelity,2400~2480MHz)等多个通信频段。首先,利用CRLH-TL的相位补偿效应,结合传统单极子天线的自身谐振,得到多个谐振工作频点;然后,通过参数优化,使得其中的两个工作频点相互靠近形成一个更宽的工作频段,并且在工作频段内获得了较好的增益和稳定的方向图。最后,对所设计的天线进行实物加工并测试,测试结果与仿真结果吻合良好。A novel composited right / left-handed(CRLH) transmission line unit cell is presented in this paper,and then a broadband monopole antenna that loaded with it is designed.The proposed antenna operates at 1.67 ~ 2.67 GHz,with a 46% relative bandwidth,which covers DCS(Digital Cellular System,1710 ~ 1880MHz),PCS(Personal Communication Service,1850 ~ 1990MHz),Wi-Fi(Wireless Fldelity,2400 ~ 2480MHz) and some other bands for communication.First,the phase compensation effect of the CRLH-TL unit cell is used for achieving operating at multi-bands.Second,the parameters of the antenna is adjusted to make two neighboring bands into a single broadband,and obtain good gain as well as quasi-omidirectional radiation patterns within the operating band.Lastly,measurements and EM simulations are in a good agreement with theoretical predictions.

关 键 词：复合左右手传输线(CRLH-TL) 单极子天线 宽带 相位补偿效应 

分 类 号：TN821.3[电子电信—信息与通信工程]