一种宽带平面单极子天线设计  

Design of Wide Band Planar Monopole Antenna

作　　者：杨俊秀[1] 赵文来[1] 李霖[1] 

机构地区：[1]浙江理工大学信息学院,杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2015年第4期543-546,564,共5页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：国家自然科学基金项目(1104688-A);浙江省教育厅项目(13036068-F)

摘　　要：设计了一种介质基板尺寸为80.0mm×70.0mm×1.6mm,材料是相对介电常数为4.4的FR4的宽带微带天线。基于软件HFSS对天线进行仿真,结果表明：天线工作带宽可达到0.79~2.81 GHz（回波损耗dB（S（1,1））≤-10dB,驻波比VSWR≤2）,相对带宽达112%,覆盖GSM900、CDMA800、DCS1800及PCS1900通信波段,同时包含无线局域网WLAN 2.45GHz波段,在工作频段内具有良好的辐射方向性和增益,可用于手机信号屏蔽仪天线设计。结果同时表明接地面尺寸比辐射贴片尺寸改变对天线带宽的影响大。A wide band planar monopole antenna was designed,whose material was FR4 with relative permittivity of 4.4,and the magnitude of dielectric substrate was 80.0 mm×70.0 mm×1.6 mm.The antenna was simulated based on HFSS.The results show that the working bandwidth of antenna can reach0.79-2.81 GHz（dB（S（1,1））≤-10 dB,VSWR≤2）;relative bandwidth reaches 112%;it covers GSM900,CDMA800,DCS1800 and PCS1900communication bands,including the WLAN band of 2.45 GHz.The antenna has good radiation direction and gains in working frequency band,and can be considered as a good candidate for mobile signal shielding device antenna.The results also show that the size of ground plane imposes larger impacts on bandwidth of antenna than the change of ground plane dimension.

关 键 词：反射损耗 超宽带 单极子天线 HFSS 驻波比 

分 类 号：TN82[电子电信—信息与通信工程]