具有双阻带特性的新型超宽带天线研究  

Research on a Novel Ultra-Wide Band Antenna with Dual Band-Rejection Characteristic

作　　者：吴毅强[1] 张平平[1] 何小洋 胡少文[1] 周辉林[1] 

机构地区：[1]南昌大学电子信息工程系,南昌330031

出　　处：《电子器件》2014年第5期871-875,共5页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(61062009);2013年江西省研究生创新专项资金项目(YC2013-5061)

摘　　要：通过在天线上开设不同形状和尺寸的槽,设计和制作了一种新型的采用微带馈电且具有双阻带特性的平面超宽带天线。通过HFSS对天线仿真并分析,总结出了槽结构参数对天线阻带特性的影响规律。仿真和实测结果表明,除阻带外,天线在3.015 GHz^13.27 GHz频带上的VSWR小于2,相对带宽达126%,在3.25 GHz^3.6 GHz、5.15 GHz^5.825 GHz具有良好的阻带特性,较好地避免了系统与Wimax及WLAN之间的干扰。该设计天线在工作频段内具有很好的辐射方向性和增益,满足超宽带通信的需求。A novel microstrip-feed dual band-rejection ultra-wideband （UWB）antenna is achieved by cutting slots of different shape and size on it. The relationship between structural parameters of slot and band-rejection characteristic is discussed though simulation on HFSS. The simulated and measured results have shown that the antenna has wideband characteristic from 3. 015 GHz to 13.27 GHz, means a relative bandwidth of 126% and good band- rejection characteristic 3.25 GHz from 3.6 GHz and from 5.15 GHz to 5. 825 GHz ,which can avoid interference between the UWB system and WiMax and WLAN. Moreover, the antenna has good omnidirectional radiation characteristic on non band-rejection band and it can be considered as a good candidate for UWB communications.

关 键 词：超宽带 双阻带特性 开槽 平面天线 

分 类 号：TN82[电子电信—信息与通信工程]