[SI-LIST] Re: Multi-transmission line Zo

Hi Jenni,

One way of doing it is to renormalize the S matrix to different 
normalization impedances and watch which values minimize frequency 
curves of the main diagonal elements.  For instance, the normalization 
impedance that  minimizes S22 is the approximate characteristic 
impedance of line 2.

As it was recently dicussed on this list multiple times, dont expect any 
(real and frequency independent) normalization impedance  to actually 
drive the reflection parameters all the way down to zero.  Anything that 
below 1GHz gives you quarter-wave peak values better than -30dB is 
usually considered good match.

Regards,

Istvan Novak
SUN Microsystems

Jennifer Maharani wrote:
> Hi all,
>
> I have S-par of multi-line microstrip. How can I derive the single- 
> ended characteristic impedance of each line?
>
> Jenni
>
>
>   

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