【作者】 杨海宁； 付勇； 李娜； 沈嘉诚； 明鑫峰；

【Author】 Haining Yang;Yong Fu;Na Li;Jiacheng Shen;Xinfeng Ming;University of Electronic Science and Technology of China (UESTC);Guangdong Institute of Electronic Information Engineering,UESTC;

【机构】 电子科技大学； 电子科技大学广东电子信息工程研究院；

【摘要】 本文提出了一种基于分布式源的单元级数字相控阵自校准方法。针对分布式源带来的随机相位引入问题,建立了基于分布式源的单元级数字相控阵校准模型,分析了发射通道相位差异产生原因,提出了单元级数字相控阵自校准方法,利用两片AD9371组成的数字相控阵平台完成了自校准验证。基于此方法的相控阵系统校准在射频天线前端保持不变的情况下能够将各发射通道之间的相位差校准至0°附近,误差为±3°。更多还原

【Abstract】 A distributed source based self-calibration method for elemental digital phased arrays is proposed in this paper.Aiming at the problem of random phase introduction caused by distributed sources,a calibration model of elemental digital phased array based on distributed sources is established,and the reason of phase difference in transmitting channel is analyzed.A self-calibration method of elemental digital phased array is proposed,and a digital phased array platform composed of two AD9371 is used to complete the self-calibration verification.The calibration of phased array system based on this method can calibrate the phase difference between each transmitting channel to near 0° with an error of ± 3° while the RF antenna front end remains unchanged.更多还原