时间门在天线时域远场测试中的应用

Application of time gating in the far-field time domain measurement

文章利用测量系统的快速扫频功能通过逆傅里叶变换获取天线的时域方向图,并利用时间门对环境散射信号进行了处理,返回频域后获取了更加接近理论的方向图;另外,还通过选择不同时间门实现了2个天线方向图的同时测量,并对时间门误差进行了分析。

In this paper, a set of frequency domain system with the fast frequency sweep function is used to realize time domain measurement. Through time gating two different antenna＇s patterns can be obtained simultaneously. The measurement results show that time gating can enhance the measurement precision. The time gating error is also analyzed.