平面相控阵天线损伤分析  

Damage Analysis of Planar Phased Array Antenna

作　　者：张宏伟[1] 董盛蓝 吕波[1] ZHANG Hongwei DONG Shenglan LYU Bo(Department of Electronic and Optical Engineering, Ordnance Engineering College, Shijiazhuang 050003, Chin)

机构地区：[1]军械工程学院电子与光学工程系,河北石家庄050003

出　　处：《雷达科学与技术》2017年第3期322-326,333,共6页Radar Science and Technology

摘　　要：由于扫描速度快、波束指向灵活等特点,相控阵天线得到越来越多的应用。同时,由于相控阵天线阵元较多,在使用中容易出现阵元失效的情况,因此有必要对相控阵天线进行损伤分析。利用Matlab建模得出完好天线方向图与损伤天线方向图,并对受损后天线方向图进行了分析。得出阵元损伤的位置越靠近中心,对天线方向图的影响越大的结论。此外,在单个阵元失效的基础上将阵面划分为5个区域,通过直接观察每个区域的失效阵元数判断阵面的损伤等级。为平面阵列天线损伤评估与修复提供了重要依据。Phased array antenna has found wide applications due to its characteristics of the last scanning speed and the flexible beam pointing. Since the numerous array elements, there is a great possibility of element failure. So it is necessary to carry out the analysis of damaged phased array antenna. Matlab modeling is used to obtain the intact antenna pattern and the damaged antenna pattern, and the damaged pattern is analyzed. The conclusion is reached that the closer the position of the damage array element to the center, the greater the impact on the antenna pattern. Moreover, on the basis of the failure of single array element, the antenna array is divided into five regions. The damage level is determined directly through observing the number of failure array elements in each regions. An important basis is provided for the damage assessment and the repair of the planar phased array antenna.

关 键 词：平面相控阵天线 阵元失效 损伤评估 修复 

分 类 号：TN821.8[电子电信—信息与通信工程]