相控阵天线的通道误差对数字波束形成的影响  

The influence of channel uncertainty of phased array antenna in digital beam forming

作　　者：韩小娟[1] 何兵哲[1] 楼大年[1] 张宁[1] 

机构地区：[1]中国空间技术研究院西安分院,陕西西安710100

出　　处：《现代电子技术》2014年第1期5-7,共3页Modern Electronics Technique

基　　金：国家高科技研究发展计划(863计划):(2012AA01A503)

摘　　要：为了研究相控阵天线的通道误差对数字波束形成的影响,首先对通道误差进行了建模,并推导得出通道间幅度误差对波束指向的影响不大,但会使波束方向图的主瓣增益降低,旁瓣电平升高;相位误差不仅会使波束主瓣增益降低,旁瓣电平抬高,还会引起波束指向偏差,最后用Matlab对此结论进行了仿真验证。In order to research the influence of channel uncertainty of phased array antenna in digital beam forming, the channel error is modeled, and a conclusion is obtained that the amplitude error between channels has little influence on the beam pointing but can lower the main lobe gain of beam pattern and increase the side lobe level. The phase error can not only reduce the main lobe gain and raise the side lobe level, but also cause beam pointing deviation. Finally, the result is proved by Matlab simulation.

关 键 词：相控阵天线 幅相误差 数字波束形成 主瓣增益 

分 类 号：TN958.34[电子电信—信号与信息处理]