smith chart software berne university

Hi there guys,

Quick query........Is it possible to convert from impedance to s parameters....is the smith chart the only way?



Cat :)

a lot of software has this transfer from Z to S,such as ads

Is there any method i can use without any software?

Hi, Catalyst:

You can just follow the equation for it.

S = (Z-Zc)/(Z+Zc)

Just treat them as matrices. It should be simple if you know how to program. You can find matrix solvers in many places.

Regards.

you can use the equations fro converting impedance to S parameter and /or use free smith chart software from internet
there is one good smith chart capable of doing this from Dr fritz dellsperger at berne university. SmithchartV2.02

http://fritz.dellsperger.net/
good luck

Mehdi

thanks for the replies guys :)

Could anyone give me an example calculation to go by using the equation that jian gave above. I'm having trouble with it.


Regards


Cat :)

Hi, Catalyst:

The general conversion equation is:

S = Inv( Z + Zc ) * ( Z - Zc )

Z is the z-matrix. Zc is a diagonal matirx with Zc_i as the (i,i) element and other element as 0. I think you can implement it easily on Matlab since all the matrix operations are available on Matlab. Certainly, you can try to use C++ or other languages. There are many matrix operations libraries available.

Best regards,