三端口反射计的新研究

New analysis of three-port reflectometer

分析了三端口网络的特殊性 ,提出了用三端口反射计测量网络参数的新方法—标量检测矢量变换方法。该方法通过三端口反射计的标量检测方程 ,利用取样网络的本征参数进行变换求得复反射系数或散射参数 ,而与测量系统的比例常数无关 ,简化了测量系统硬件 ,并提高了测量系统的可靠性和稳定性。实验结果证明了该方法的正确性和可行性。

Some characteristics of any given three-port network are discussed. A new method, called scalar- detection vector-transformation method, for the measurement of parameters of a network by three-port reflectometer is presented. This method utilizes a scalar- detection equation and the vector- transformation of the intrinsic parameters of a sampling microwave network to determine the complex reflection coefficient or the scattering parameters, which is independent of the proportional coefficient of a test system used and makes the test system simpler in hardware. Therefore, the reliability and stability of the test system is improved greatly. The validity and the realizability of the method are proved by the experimental results.