一种宽带宽角双极化低剖面相控阵天线  

A Broad-band and Wide-angle Dual-polarized Low-profile Phased Array Antenna

作　　者：陈宏刚 孙磊[1,2] 吴鸿超 CHEN Honggang;SUN Lei;WU Hongchao(Nanjing Research Institute of Electronics Technology,Nanjing 210039 ,China;National Key Laboratory of Antenna and Microwave Technology,Nanjing 210039 ,China)

机构地区：[1]南京电子技术研究所,南京210039 [2]天线与微波技术重点实验室,南京210039

出　　处：《现代雷达》2019年第3期67-71,共5页Modern Radar

摘　　要：提出了一种米波段的宽带宽角双极化相控阵天线,实现了结构简单、质量轻且剖面低的天线设计。辐射单元间的紧耦合提供了基本的宽带特性,对单支节巴伦的改进以及加载隔离板的措施则在降低剖面高度的同时进一步挖掘了宽带潜能;为改善宽角扫描性能,还引入了宽角阻抗匹配层。最终,在135 MHz～270 MHz仅0.1λ_L剖面高度内实现±45°扫描,在对低剖面要求严格的宽带宽角场合具有广泛应用前景。A meter wave band broad-band and wide-angle dual-polarized phased array antenna is proposed, which realizes the antenna design with simple structure, light weight and low profile. The tight coupling between the radiating elements provides basic broadband characteristics;the improvement of the single-stub balun and the measure of loading the separator lower the profile as well as further tap the broadband potential;besides, a wide-angle impedance matching layer is proposed to ameliorate the performance of wide-angle scanning. In the end, 135 MHz^270 MHz and ±45° scan are reached only in the height of 0.1λ_L profile, which has broad application prospects in the case of broad-band and wide-angle requiring strict low profile.

关 键 词：超宽带 宽角扫描 双极化 低剖面 紧耦合 八角环天线 相控阵 

分 类 号：TN82[电子电信—信息与通信工程]