提出了一种平面近场天线多任务测试系统的工程设计方法,该方法通过增加多功能天线测试控制器和远控微波开关对传统平面近场测试系统进行升级,使其具备对平面相控阵雷达天线多频点、多波位、多通道一次最多可测试35个天线方向图的测试能力。对新引入的幅相误差及扫描面截断误差进行了计算分析。大型相控阵天线的实测结果表明,在提高测试效率的同时,其测试精度亦能满足测试要求。

A mehod of engineering design for planar near-field multi-tasks measurement system is introduced. This method is to upgrade traditional planar near-field measurement system in order to measure phased array antenna on multi-frequencies. Multi-beam positions, multi channels by 35 antenna patterns measured once at best through adding a multi-function testing antenna controller and a remote microwave switch. New import source of amplitude-phase error and scanning plane truncation error are calculated and analyzed. Results of testing a phased arrary antenna show that it not only improves efficiency of measurement but also makes no effection on precision of measuring antenna in planar near-field.