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A Question about the Power Calibration

Question asked by SandyGao on Jan 18, 2017
Latest reply on Sep 8, 2017 by daras

Hi everyone! The equation above is given in Handbook of Microwave Component Measurements with Advanced VNA Technique.

Does b2A_MatchCor_1-Port equal to the output signal of the DUT when a 50 ohms resistance is connected at DUT’s output port? Or it equals to the output signal of DUT when DUT’s output port is connected to the Port 2 of VNA?


If it is the first case, the S21A can be calculated by b2A/a1A. But If it is the second case, we can not simply calculate S21A by b2A/a1A.


So I feel very confusing.

Any advice are very appreciate!