多路全相位微波数控移相器控制技术

Control technology of multiplex all-phase digital phase shifter

通过对多路0°～360°的全相位数控移相器的控制技术的研究，采用一种基于“串口服务器＋时序控制器”的方法实现了多路全相位的微波移相控制。实验测试表明：这种控制方法是可行的，便于多路控制的工程化实现。同时实际的应用中发现，在不同频段和较大的相移情况下，存在移相精确度非线性变化的问题，并提出了基于软件编程的改进方法。

The control technical research on multi-channel 0°-360°digital phase shifter is conducted. A multiplex all-phase phase shifter is implemented by using serial device server and scheduling controller. The testing results indicate that the proposed method is feasible, which is convenient for the engineering realization of multi-path control. It is found that there is a non-linear change of phase-shift accuracy under different bandwidths and largephase shift conditions. To solve the problem, an improved method based on software programming is put forward.