Analysis of Influence of Directional Coupler on Power Calibration Results

摘要

The influence of the directional coupler on the power calibration results is analyzed synthetically. The calculation method of the coupling parameters and the calculation formula of the equivalent reflection coefficient are given. The coupling parameters of the coupler and the uncertainty of the introduction of the reflection parameters are quantitatively calculated. The reasons for the dispersion of the measured data are analyzed qualitatively.