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Writing Equations with S-parameters

Question asked by lbelos on Jun 18, 2003
Latest reply on Jun 18, 2003 by ROB_LEFEBVRE
Hello,

Here is an example of what me "Equations" looks like.

S_load=Linear1.Sch1.RECT[S11]
S_open=Linear1.Sch1.RECT[S22]
S_short=Linear1.Sch1.RECT[S33]

S11_mixer=S_load
S22_mixer=(S_open+S_short-2*S_load)/(S_short-S_open)
S21_mixer=SQR((S_open-S_load)*(1-S22_mixer))

What I need is to be able to plot S11_mixer, S22_mixer and S21_mixer in dB.

I thought that simply placing Equations.DB[S21_mixer] in rectangular plot would do it, but it does not. It gives an error message "Unknown variable or invalid number DB[S21_mixer] at Graph2". If I simply type Equations.S21_mixer, a plot of real part of S21_mixer is plotted.
Is there something I am doing wrong?

Thank you
LB  

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