一种新的基于PRM的多端口微波器件测量方法

A novel measured method for multiple ports microwave network based on port reduction method

端口还原法(PRM)是一种通过多组端口接负载的n-1端口的散射矩阵获得n端口散射矩阵的方法。通过这种方法可以减少对测试仪器的校准过程。当n端口的微波器件通过端口接相应的负载降低为两端口微波网络时,两端口的散射矩阵可以通过传统的两端口矢量网络分析仪测量获得。但是传统的PRM方法需要三种相应的端口负载,本文提出的新型PRM测量方法只需要两种相应的端口负载,使PRM算法更加简化。仿真结果显示该PRM算法具有良好的精度。此外,该算法比使用理想负载的两端口网络分析仪测量结果更准确。

The port reduction method(PRM)is a method to acquire the scattering matrix of an-port network from the scattering matrix measured at a reduced port order by terminating certain ports.In this method,the instrumentation requirement and calibration procedure is relaxed.As the port order is reduced to two,the scattering matrix of an-port network can be obtained from the measurement using a conventional two-port vector network analyzer.In this paper,we describe two novel PRM’s,which can reduce the order of measured ports to two.The experiment results show good accuracy.These two PRM’s can provide a simpler calibration procedure and instrumentation than those directly using an-port network analyzer.In addition,they give more accurate results than those measured by a two-port network analyzer with the assumption of using ideal terminators.