以带线系统为测试夹具，利用网络分析仪在微波频率下测量材料的复介电常数和复磁导率。分析了影响测试精度的主要误差因素，并建立误差的数学模型。 Taking the strip system as the test fixture, the complex permittivity and complex permeability of the material were measured at microwave frequency by using a network analyzer. The main error factors that affect the test accuracy are analyzed and a mathematical model of the error is established.