有源相控阵天线的近场校准  

Near-field Calibration of Active Phased Array Antenna

作　　者：焦禹[1] 陈文俊[1] 

机构地区：[1]南京船舶雷达研究所,南京210015

出　　处：《电讯技术》2016年第4期453-457,共5页Telecommunication Engineering

摘　　要：为实现对相控阵天线的校准,降低幅相误差和阵元失效对天线性能的影响,提出了一种考虑互耦效应的近场校准方法。在利用近场扫描法完成逐一通道校准的基础上,使用旋转矢量法进行二次校准。在应用旋转矢量法(REV)时,为使被测信号的变化明显,将大规模相控阵天线分为中间、边缘区域进行分区校准。通过二次校准可判定阵元是否失效,提高相控阵天线的幅相一致性;通过分区校准减小阵元间互耦的影响,缩短校准时间。仿真结果表明:此方法用于大型相控阵的校准具有较高的准确性,可改善校准结果。In order to calibrate the phased array antenna and reduce the impact of element failure and amplitude-phase errors,this paper proposes a calibration method which considers the mutual coupling. On thebasis of the calibration with the near-field scanning method,the elements is calibrated by the rotating element electric-field vector（REV） method. With the REV method,the large-scale phased array antenna isdistributed into some small areas such as middle areas and edge areas to make the signal vary more significantly . The re-calibration method can find out the failure elements and improve the phased array antenna＇s amplitude-phase consistency. The calibration of sub-region with the REV method can diminish the effectof the mutual coupling and shorten the calibration period. The simulations validate that the method has agood accuracy to calibrate the large-scale phased array antenna and can improve the calibration results.

关 键 词：相控阵天线校准 旋转矢量法 近场扫描法 互耦效应 幅相一致性 

分 类 号：TN820[电子电信—信息与通信工程]