非常实用的工具，可以用Matlab来进行射频上船用的转换以及分析。（例如可以将S矩阵转化成Z矩阵，放大器稳定性分析……）-Very useful tool, you can use Matlab to carry out on the marine radio frequency conversion, as well as analysis. (Such as the S matrix can be transformed into Z matrix, amplifier stability