[SI-LIST] Common Mode Impedance.

  • From: "Moeller, Merrick" <Merrick.Moeller@xxxxxxxxx>
  • To: <si-list@xxxxxxxxxxxxx>
  • Date: Tue, 12 Apr 2005 14:51:12 -0500

I am interested in ploting Common and Differential
Mode Impdeance vs. Frequency for a common mode 
Choke device. Using equivalent circuit models of the
Choke I have managed to create 4-port S-parameters
As well as convert them into 4-port Z-parameters. I
Have conversions to 2-port mixed mode S-parameters
As well. I was interested to know if there is a set
Of conversions for mixed mode Z-parameters, or if
There is such a thing. 
I have Commom mode return loss  S1c1c, but I am
Not sure how that translates in to an impedance. 
Ie  Zc = (1-S1c1c)/(1+S1c1c)... Does that apply
To mixed mode. I have my doubts, but am definitely
Not sure.

Regards,
Merrick 





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