C波段宽带双极化微带贴片天线设计  

Design of C-band Wideband Dual-polarized Microstrip Patch Antenna

作　　者：金秀梅[1] 叶顺涛 李运志[1] 赵继明[1] 吴志锋 JIN Xiumei;YE Shuntao;LI Yunzhi;ZHAO Jiming;WU Zhifeng(Anhui Sun Create Electronics Co. ,Ltd. ,Hefei 230088,China)

机构地区：[1]安徽四创电子股份有限公司,安徽合肥230088

出　　处：《无线电工程》2020年第9期792-796,共5页Radio Engineering

摘　　要：针对宽带双极化天线高隔离度难以实现的问题,设计了一种C波段宽带双极化微带贴片天线,天线单元采用口径耦合馈电的双层微带贴片形式来拓展带宽。为了提高2种极化端口的隔离,在地板上开一对相互垂直的H型缝隙,馈电微带线匹配枝节采用T字型结构。仿真结果表明,该天线在C波段相对阻抗带宽达21%(驻波小于2),具有良好的端口隔离度和高交叉极化抑制度。In order to solve the problem that the high isolation of the wideband dual-polarized antenna is difficult to achieve,a C-band wideband dual-polarized microstrip patch antenna is designed.In order to meet the bandwidth requirements,a double-layer microstrip patch antenna with aperture coupling feed is adopted.In order to improve the isolation of two polarization ports,a pair of orthogonal H-shaped slots is opened on the floor and the matching branches of feeding microstrip line adopt T-shaped structure.Simulation results show that the proposed antenna has a relative impedance bandwidth of 21%(VSWR<2)at C-band,which indicates it has the advantages of good port isolation and high cross polarization suppression.

关 键 词：微带贴片天线 双极化 H型耦合缝隙 宽带 

分 类 号：TN91[电子电信—通信与信息系统]