基于复合辐射器的WLAN/WiMax多频CPW微带天线  

Multi-frequency WLAN/WiMax CPW Microstrip Antenna Based on Composite Radiator

作　　者：陆晓铮[1] 叶明[1] 

机构地区：[1]上海大学通信与信息工程学院,上海200072

出　　处：《微波学报》2011年第2期52-55,共4页Journal of Microwaves

基　　金：国家自然科学基金项目(No.60871030)

摘　　要：提出了一种图形结构简单,可同时工作于WLAN和WiMax频段,且具有甚好的带宽性能的新型结构微带天线。该天线辐射器由三角形、矩形和圆形辐射单元组合而成,采用共面波导(CPW)进行馈电,并利用微扰量加载调谐天线的工作频率。由此设计制作的天线实测结果表明:在802.11b/g(2.4～2.4835GHz)频段,相对阻抗带宽为34%,回波损耗优于-10dB的频段覆盖为2.03～2.87GHz;在WiMax(3.4～3.7GHz)频段,相对阻抗带宽为37%,回波损耗优于-10dB的频段覆盖为3.17～4.37GHz;在802.11a(5.15～5.825GHz)频段回波损耗优于-10dB的频率范围覆盖为4.91～6.83GHz。该天线尺寸为65mm×50mm×2mm,可以集成应用于相关微波电路系统中。文中还给出了天线的设计尺寸,并对仿真和实测结果进行了对比与讨论。A new microstrip antenna with quite wide bandwidths and simple structure is proposed,which can operate in the both bands at 802.11a/b/g of Wireless Local Area Network（WLAN） and Worldwide Interoperability for Microwave Access（WiMax）.The antenna consists of a triangle,a rectangle and a circle radiate units,and it is fed by coplanar waveguide（CPW） and tuned by loading perturbation.It was measured that bandwidths are 34% in the band of 802.11b/g（2.4～2.4835GHz）,and the band covered from 2.03GHz to 2.87GHz.In the band of WiMax,the measure result showed that that bandwidths,which covered 3.4～3.7GHz,are 37%.The bandwidth,whose return loss is lower than-10dB,covers from 4.91GHz to 6.83GHz in the band of 802.11a（5.15～5.825GHz）.The antenna size is 65mm×50mm×2mm,and it is easy to be integrated in microwave system.In the paper,the structure of the antenna,the simulation and measured results were presented,analyzed and discussed in detail.

关 键 词：无线局域网(WLAN) 全球微波接入互操作性技术(WiMax) 共面波导 复合辐射器 多频 微带天线 

分 类 号：TN822[电子电信—信息与通信工程]