一种大型相控阵在线校准方法  

An Online Calibration Method for Large Phased Array Antenna

作　　者：刘晓[1] 敦书波[1] 姜海玲[1] LIU Xiao;DUN Shubo;JIANG Hailing(The 54th Research Institute of CETC,Shijiazhuang 050081,China)

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2021年第2期145-148,共4页Radio Engineering

基　　金：国家科技计划专项经费基金资助项目(2016QY10W1802)。

摘　　要：为弥补相控阵天线通道间的相位不一致性以达到高效辐射的目的,需要对整个阵列进行标校。传统的校准方法存在各自的问题,不便于工程化应用,就此提出了一种中场校准方法。每次校准时在中场距离上架设校准天线,通过特定算法将校准天线由阵面变形、安装精度等干扰因素造成的位置偏差排除,进而准确地将校准天线与各阵元间路径差求出,最终得到各通道间的固有相位差值,达到校准目的。For the purpose of achieving high efficiency radiation,the phase inconsistencies between the channels of phased array antennas need to be eliminated,so the calibration method is very necessary.The traditional calibration methods are not convenient for engineering application,and they all have their own problems.A midfield calibration method is proposed.During calibration,the antenna is erected at the midfield distance for calibration.The antenna position errors caused by installation and structural deformation can be eliminated by specific algorithm.By finding the path difference between the antenna and array elements,the phase difference between channels can be obtained.The purpose of calibration can be achieved finally.

关 键 词：相控阵 校准 相位差 路径差 

分 类 号：TN821[电子电信—信息与通信工程]