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De-embedding using 12 error term cal

Question asked by meldave00 on Jul 29, 2009
Latest reply on Aug 3, 2009 by odanzy
I have been reading the "Agilent De-embedding and Embedding S-Parameter Networks Using a Vector Network Analyzer" Application Note 1364-1
I am trying to incorporate the test fixture S-parameter model into the calibration error terms in the vector network analyzer so that I can see
the real time deembedding response of my DUT with the test fixture deembedded.  However, I am confused because my 12 error calibration terms
are one set that are not frequency dependent.  However, my s parameter files for my test fixture have s parameter sets across frequency. 

The app note suggests that I apply a formula based off of the calibration error terms and the test fixture s-parameters. 
My question is:  How can I deembed the s-parameters of my text fixture using the 12 term calibration error term when my text fixture has has many s-parameter across frequency
when my 12 term calibration error terms are not frequency specific?

Or am I totally not understanding what is going on......Please help.  Also, please let me know if I can clarify my question any more.