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介绍了一种以半自动感应分压器作为中频标准衰减器,可实现准确、快速衰减测量的基于串联低中频替代法的微波衰减测量系统,并对半自动感应分压器、测量系统、测量结果和系统改进方法等部分进行了详细的分析.该系统在10MHz至18GHz频率范围内可测量衰减的范围为(0~80)dB.“,”An accurate microwave attenuation measurement system developed by Beijing Institute of Radio Metrology and Measurement based on IF(Intermediate Frequency) series substitution method is described in this paper.This system employs an Aemi-automated Inductive Voltage Divider(IVD) as a reference standard.And it is greatly improving the measurement accuracy.The Semi-automated inductive voltage divider,experimental measurement system,measurement results and further improvement is discussed in detail.This system can perform accurate measurement from 10MHz to 18GHz covering the attenuation range of 80dB.