I am trying to find an input impedance of a symmetric circuit by using an even/odd mode analysis.
I was able to find correct values for Zin,even and Zin,odd
But why is total input impedance equal to geometric mean of even and odd mode impedances, sqrt(Zin,even * Zin,odd)?
Why is it not average, (Zin,even+Zin,odd)/2?
I was able to find correct values for Zin,even and Zin,odd
But why is total input impedance equal to geometric mean of even and odd mode impedances, sqrt(Zin,even * Zin,odd)?
Why is it not average, (Zin,even+Zin,odd)/2?