[SI-LIST] Re: Even and odd mode capacitances and inductances of coupled lines

Assuming "L11" is "Self Inductance" and "L12" is "Mutual Inductance",
then yes, you have it correct.

Assuming the same for capacitance, then no; it is incorrect.

Codd = Cself + 2*Cmutual
Ceven = Cself

That said, your formulas are correct for capacitance-matrix
notation (which I have come to understand to really be
electrostatic induction matrix).  Here, C11 is Cself + Cmutual(s).
Accordingly, if you carry through the math, the formulas
you show are correct.

Given the fact that you have magnitudes specified, my guess is
that you're doing it correct (i.e., Cij where i /= j, Cij < 0).

Pat

 
> 
> Hi,
> 
> Does anyone know the formula for even and odd mode capacitances and 
> inductances of coupled lines? Is Lodd = L11-L12, Leven=L11+L12, 
> Codd=C11+|C12| and Ceven=C11-|C12|? Thanks in advance!
> 
> 
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