"when "Thru" or "Line" standard was connected between the two ports, there are 6 traces on the screen,I know 4 of them are the S-parameter of the standard, but, what are the other two traces? what do they cantributed to the TRL calibration?"
"I'm guessing that you are seeing the extra R2/R1 and R1/R2 measurments needed to compute the delta match term used in the TRL cal."
"...is acting as a load (which we call the "delta match" or change in match between sourcing and loading), you can modify the approach above to accomidate the delta match. The R2/R1 and R1/R2 measurements are essentially measuring the delta match."
" Is it meaning that using the â€œdelta matchâ€ we expand the 8-term model to 10-term model, and correct the S-parameter based on 10-term model? How is R1/R2 gotten? Another question is how does the modification (using R1/R2 and R2/R1) operated, and is there some correlative equations?"
"NHello my name is Mouloud, i'm phd student in algeria contry. i would like your help about the TRL in practice, i.e, i realised the O4 stucures T, R, L and with transitor MACOM fixed in microstrip and coplanar. I do no how can I combine all S parametres meseaured by VNA 630 of the 04 structures to obtain only the S of the transistor (DUT). Thanks a lot... coordialy M. CHALLALetwork AnalyzerError ModelsandCalibration Methods"
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