一种适用于WLAN的新型小型化双极化天线  

A Novel Compact Dual-Polarization Antenna for WLAN Application

作　　者：易钊[1] 肖海林[1] 胡振[1] 

机构地区：[1]桂林电子科技大学信息与通信学院,桂林541004

出　　处：《微波学报》2013年第4期62-64,73,共4页Journal of Microwaves

基　　金：国家"973"计划基金资助项目(2008CB317109);国家自然科学基金(61261018);广西自然科学基金重点项目(2011GXNSFD018028);广西科学基金资助项目(桂科自0991241);广西无线宽带通信与信号处理重点实验室2012年度主任基金项目(12111)

摘　　要：设计了一种可工作于WLAN 2.4GHz频段的小型化双极化天线。该天线采用双层对称结构介质板,把辐射贴片四边分别切割成凸字形形状,实现了天线小型化和有效展宽天线带宽。同时在接地板开4个对称的十字形缝隙,进一步拓宽天线带宽和明显减小天线的整体尺寸并提高了天线辐射性能。由此设计制作的天线实验结果为:小于-10dB回波损耗的频段为2.37～2.59GHz,相对阻抗带宽达9.1%,端口隔离度达到了33dB,增益最大值约3.63dBi,表明该微带天线具有宽频带和良好的辐射性能。此外,该天线结构简单紧凑,易于加工制作和集成,适合应用于移动终端。In this paper, we design a compact dual-polarized antenna which can operate at 2.45 GHz band of wireless local area networks （WLAN）. The antenna is composed of double symmetrical structure dielectric plates, the four sides of ra- diation patch are cut into the convex-shape, which can achieve miniaturization and effectively expand antenna bandwidth. Meanwhile four symmetrical cross slots are cut in the ground plane, it can further broaden the antenna bandwidth, and signif- icantly reduce the overall size of the antenna and improve the performance of the antenna radiation. The measured results are obtained： the relative impedance bandwidth of the designed antenna is over 9.1% （2.37 - 2.59GHz ） , the return loss is less than -lOdB, the isolation is better than 33dB, and the maximum gain is 3.63dBi, these results show the designed an- tenna has wide band and good performance. Moreover, the antenna structure is simple and compact, which is also easier to be fabricated and integrated, and is to be suited for mobile terminal.

关 键 词：无线局域网(WLAN) 双极化 十字形缝隙 小型化 

分 类 号：TN821.1[电子电信—信息与通信工程] TN925.93