Research on calibration for automatic test system based on scattering parameters of cascaded microwave networks

In the practical application of microwave automatic test system, due to the complexity of test channels and unconventional requirements, the system in general in the automatic test method of On Station Calibration makes that system configuration of the general instruments and equipment cannot achieve effective correction of error test system by ideal calibration, thus resulting in a decline in the test accuracy of the system and even measure failure^[1–2]. To solve this problem, this paper presents a method calibration for automatic test system based on scattering parameters of cascaded microwave networks, It can ensure test accuracy without distortion in different test conditions, satisfy the high performance, high accuracy, multi-parameter, multi-function automatic test requirements in the form of generalization.