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Uncertainty applied to the measurement

Question asked by DAN-INTERN on Dec 8, 2017
Latest reply on Dec 13, 2017 by Dr_joel

HI i am new at RF characterization techniques . I am currently working on the uncertainty estimation for a measurement based on one port S11 reflection measurement. I download the uncertainty calculator and introduced my analyzer and calibration kit. What i want to know is how i have to apply the uncertainty charts for the S11 magnitude and phase accuracy, as i understand the values of the uncertainty will depend on the S11 measured and the frequency range. On my measurement i make a sweep from 0 to 10 GHz, measuring the S11 at each frequency. Is well done if i add the Magnitude uncertainty an the phase uncertainty from the charts to my measurement equations in function of the S11 value i measure at each frequency ?