介绍了利用频率变换法设计集总参数元件阻抗变换器的两个关键步骤：变换网络级数ｎ确定后技术指标的修正和反射系数零极点的频率变换．设计举例表明频率变换法不存在计算误差，并能实现最佳的匹配特性． The two key steps of designing the lumped parameter element impedance converter using frequency transformation are introduced: the correction of the technical index after the transformation of the network order n and the frequency transformation of the zero pole of the reflection coefficient. The design examples show that there is no calculation error in the frequency conversion method and can achieve the best matching characteristics.