Open lines in de-embedding

[ffrank]

Hi, I want to de-embbed the fixture using open lines with different electrical lenghts.
Could you help me with this?

[Joel_Dunsmore]

I'm not quite following your question, does Sxy_k represent the lines, or the thing you are trying to measure?  Is S11 the impedance you want to see? and is it you want to see the effects of the lines on S11 (that is, emulate lines in AWR to see how S11 rotates and presents a different S11m?), or you want to see S11 after de-embedding the lines (which are represented by  Sxy_k where k is indexing different lines?) ?   A better problem statement would be needed to give a better answer.

[Marsupilami]

ffrank, is this a practical problem or school homework?
We might have different suggestions depending.
Regarding your last comment, you can absolutely use the 3 term vna error model and solve as you'd with SOL. (How good it will be is another question.) Your 3 standards will be an open (on the end of your fixture) and two offset opens (offset = length - fixture length). You have a linear system of 3 equations but it's unclear what are your unknowns. The short is going to be one, unless you're assuming it's ideal. If not then you can pick 2 for your line which means you have to have some knowledge about them.
(also Dr. Dunsmore might know better, in which case listen to him not to the random dude on the internet.)