一种相控阵天线网络相差中场校准新方法  

A Novel Mid-Field Phase Calibration Method for Phased-Array Antenna

作　　者：魏鹏 刘洛琨[1] 菅春晓 

机构地区：[1]信息工程大学信息系统工程学院,河南郑州450002

出　　处：《雷达科学与技术》2017年第1期99-102,107,共5页Radar Science and Technology

基　　金：国家自然科学基金(No.61271253)

摘　　要：针对相控阵天线网络相差,提出了一种中场校准新方法,建立了中场校准模型,分析了中场校准方法的基本原理。该方法对辅助天线位置进行估计,求出接近原阵面相位曲面的拟合曲面,得到阵面相位误差分布,通过相位补偿达到校准的目的。仿真结果表明,校准后的天线方向图第一级副瓣电平降低了3dB左右,第三、四级副瓣电平降低了5dB,归一化副瓣电平平均下降了2.5dB左右;校准后的方向图较为接近标准方向图。该中场校准方法操作简便,具有很高的工程价值。In order to calibrate phased-array antenna network＇s phase error, a novel mid-field calibration method is proposed. It is modeled and its theory is analyzed. Through estimating the position of the auxiliary antenna, a fitting surface which is close to the original one is obtained, and then the phase error is figured out. The calibration is achieved by phase compensation. Simulation shows that the first sidelobe level reduces by about 3 dB; the 3th and 4th sidelobe levels reduce by 5 dB; the normalized sidelobe level reduces by about 2.5 dB on average after calibration. The pattern after calibration is close to the standard one. This method is easy to operate and it is of great engineering value.

关 键 词：中场校准 相控阵天线 相位误差 方向图 副瓣 

分 类 号：TN820.1[电子电信—信息与通信工程] TN821.8