The construction and analysis of PIM testing system

Since the application of high power microwave weaons and the complication of electronic systems, the problem of passive intermodulation becomes more important. In this paper, we discussed the causes, impact, and measurement of PIM according to the present status in the passive intermodulation distortion test. Build testing system based on the concept of sharing platform, in engineering practice, the test system can test the PIM characteristics of microwave components offor a specific application needs flexibly. This paper analyzed the error and studied the unstable factors of the test system, then this paper put forward the matters needing attention to improve the accuracy of PIM systems.