一种双极化L型探针馈电宽带相控天线阵列  

A Dual-polarized L-shaped Probe-fed Broadband Phased Array Antenna

作　　者：吴启睿 王文博 刘洪庆 曹振新[1] 高迪 WU Qirui;WANG Wenbo;LIU Hongqing;CAO Zhenxin;GAO Di(School of Information Science and Engineering,Southeast University,Nanjing 211189,China;China Academy of Electronics and Information Technology,Beijng 100041,China;AVIC Research Institute for Special Structures of Aeronautical Composites,Jinan 250023,China)

机构地区：[1]东南大学信息科学与工程学院,南京211189 [2]中国电力科学研究院有限公司,北京100041 [3]中国航空工业济南特种结构研究所,济南250023

出　　处：《微波学报》2024年第5期34-38,共5页Journal of Microwaves

基　　金：国家自然科学基金(61471117)。

摘　　要：本文提出了一种可实现双极化的宽频带低剖面的相控微带天线阵列,为实现宽频带特性,该阵列天线采用了L型探针馈电结构以及贴片开槽结构的设计。在天线单元的设计过程中,结合仿真验证,分析了关键参数对于天线单元驻波曲线变化的影响。该天线的剖面高度为3.56 mm,约为高频波长的0.15倍,可满足低剖面高度相控阵天线的应用需求。仿真结果表明,该天线阵列在±45°的扫描角域内可实现64.9%(有源驻波比≤2.5)的相对带宽,在±60°的扫描角域内可实现57.9%(有源驻波比≤3)的相对带宽,且具有良好的极化纯度。In this paper,a dual-polarized broadband low-profile phased micro-strip antenna array is proposed.In order to achieve broadband characteristics,the design of L-shaped probe feed structure and patch slotted structure of the array antenna are adopted.In the design process of the antenna unit,combined with simulation verification,the influence of key parameters on the change of the standing wave curve of the antenna unit is analyzed.The profile height of the antenna is 3.56 mm,which is about 0.15 times of the high frequency wavelength.It can meet the application requirements of low profile height phased array antenna.The simulation results show that the antenna array can achieve a relative bandwidth of 64.9%(active standing wave ration≤2.5)in the scanning angle domain of±45°and a relative bandwidth of 57.9%(active standing wave ratio≤3)in the scanning angle domain of±60°,and has good polarization purity.

关 键 词：双极化 宽带 L型探针馈电 低剖面 相控阵 

分 类 号：TN821.8[电子电信—信息与通信工程]