calculating impedance of pcb tracks

Hi all,

I have 2 port measured data(s2p) from my PCB, and I would like to know calculate the impedance of the PCB trace @ particular frequency. Does anyone know how to do that, please help !

MK

If you do not have any other RF CAD software install the following one which is free:

http://101science.com/RFSim99.exe

Import your S2P file and using Smith chart you can find the impedance at particular frequency.