基于平面近场测量系统的多波束测试设计

Design of multi-beam measurement based on the planar near-field measurement system

基于平面近场测量系统,给出了一套多波束测试设计方案.该设计充分考虑了波束切换效率,设计相邻波束测试时间间隔为0.5 ms,波束切换时间为20μs.采样架每次换行之前进行系统初始化,并提供换行信息确保波束切换的稳定性.脉冲测试确保时序同步;激励脉冲信号处于雷达工作脉内,确保器件的安全性.该系统最多可同时测试300多个波束.测试结果表明该设计高效、稳定、安全可靠.

This paper offers a multi-beam measurement design scheme based on the planar near-field measurement system.The design fully considers the beam switching efficiency,in which the time interval for the adjacent beam measurement is0.5milliseconds,and the beam switching time is20microseconds.System initialization for the sampling frame is done prior to the new line scan,and the stability of beam switching is ensuredthrough the new line scanning information.For pulse measurement mode,the time-sequence synchronization hasbeen guaranteed,and drive pulse signal within the radar operating pulse sufficiently ensures the security of the devices.The measurement result demonstrates that the design is efficient,stable,safe and reliable.