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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。
Abstract：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.
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基本信息:
中图分类号:TN822
引用信息:
[1]金秀梅,叶顺涛,李运志,等.C波段宽带双极化微带贴片天线设计[J].无线电工程,2020,50(09):792-796.