Lorentzian Fitting with .s2p file

Good Morning,

I'm going to execute the Lorentzian Fitting with a .s2p file but I have no clue about how do do that....

Could anyone help me, please?

Thank You in Advance

Answer 1

[Vimal Rathod]

Hi,

MATLAB handles Touchstone files as S-Parameter objects, which require RF Toolbox to be extracted. To get the data from the .s2p file, you would need to use "rfdata.data" function which returns S-Parameter data as output.

The following link has an example which shows how to get the data from. s2p file using the rfdata.data function.

Store result of circuit object analysis - MATLAB (mathworks.com)

You could use below script to get the data from the file.

file = 'default.s2p'; %name of the file
h = read(rfdata.data,file); % read data from .s2p file
s = h.S_Parameters; %this will have all the necessary data

The following link explains about S-parameter objects in RF toolbox.

S-Parameter Notation - MATLAB & Simulink (mathworks.com)

Once the data is extracted according to your requirements, you could use lorentzfit function present in the following link.

lorentzfit(x,y,varargin) - File Exchange - MATLAB Central (mathworks.com)