新型双极化波导缝隙天线研究  

A Study on the Novel Waveguide Slotted Antenna with Dual-polarization

作　　者：宋国栋[1] 李建新[1,2] 张金平[1] 高铁[1,2] 

机构地区：[1]南京电子技术研究所,南京210039 [2]天线与微波技术国防科技重点实验室,南京210013

出　　处：《现代雷达》2010年第12期67-71,共5页Modern Radar

摘　　要：传统的双极化波导缝隙天线阵每种极化方式交叉极化都较差,极化端口隔离度不高,尤其是垂直极化波束在进行大角度扫描时,容易出现二次副瓣。针对上述情况,文中介绍了一种新型的双极化波导缝隙阵天线阵,水平极化天线采用非倾斜窄边缝波导缝隙天线阵,垂直极化天线采用非对称脊波导宽边开缝波导缝隙天线阵。通过对该新型双极化波导缝隙阵进行仿真分析和试验研究,发现该组阵方式较大改善了2种极化方式的交叉极化,有效提高了2种极化天线之间的隔离度,可实现宽角扫描,较大改善了整个阵面的性能,具有较好的工程实用性。The cross-polarizations and the polarization isolation performance of conventional dual-polarization waveguide slotted array antennas are poor.In addition,grating lobes are arisen while the vertical polarized beam scans in wide angle.A novel waveguide slotted antenna array with dual-polarization and low cross-polarization is proposed in this paper.The untilted edge-slotted waveguide antenna and asymmetric ridge waveguide antenna are used for the presented array.The simulated and experimental results verify that the proposed antenna array improves the performance in cross-polarization and port isolation,and the wide-angle scanning is achieved.

关 键 词：双极化 波导缝隙天线阵 非对称脊波导天线 低交叉极化 端口隔离度 

分 类 号：TN822[电子电信—信息与通信工程]