新型缝隙加载陷波三频微带天线

新型缝隙加载陷波三频微带天线

内容简介：设计了一种基于陷波结构的三频微带印刷天线,以平面单极子天线为基础,采用共面波导馈电,通过在辐射贴片和微带线上加载缝隙实现了天线的三频特性。用电磁仿真软件 HF-SS12对天线进行设计优化,根据仿真结果制作了天线样品,测试结果与仿真结果吻合较好。天线回波损耗大于10dB的工作频段为1.85~2.53 GHZ,3.14~4.38 GHz和4.87~5.93 GHz,可以很好地覆盖Bluetooth(2.4~2.48 GHz),WiMAX(3.4~3.6 GHz)和 WLAN(5.15~5.825 GHz)3个频段。在工作频带内阻抗特性和方向图特性良好,可以满足无线通信的要求。

Abstract：A triple-band printed micro-strip antenna fed by coplanar waveguide (CPW)is designed based on notched structure.The character of multi-band is achieved by adding slots to the radiation patch and micro-strip of planar monopole antenna.The antenna model is simulated and optimized by electromagnetism simulation software HFSS12 and a prototype is manufactured according to the result of simulation.The re-sult of measurement fits well with that of simulation.The antenna can work on the bands of 1.85~2.53 GHZ,3.14~4.38 GHz and 4.87~5.93 GHz (S11<-10 dB),which cover the bands of Bluetooth (2.4~2. 48 GHz),WiMAX (3.4~3.6 GHz)and WLAN (5.15~5.825 GHz).The antenna’s impendence and gain are good enough to meet the requirement of wireless communication in its working bands.

作者：宋志杰, 梁建刚, 张荣江,

关键词：三频天线, 微带天线, 缝隙加载, Bluetooth, WiMAX, WLAN,