I understand that you are trying to identify S-parameters for an RF cirucit. Referring the following information might be of good help to you.
Using Simulink:
Using Simulink, the purpose can be achieved hassle-free. The s-parameter of a Chebyshev filter can be measured by connecting the Chebyshev filter block to S-Parameter Testbench block in Simulink.
Refer to this documentation page for further reference: Measure S-Parameter Data of Chebyshev Filter - MATLAB & Simulink (mathworks.com)
Using MATLAB:
In order to design a chebyshev filter cheby1() MATLAB function can be used. For more information refer to the following documentation link:
The S-parameters of a Chebyshev filter can be measured by ‘sparameters’ referring to the following documentation link:
Additionally, to design any RF circuit, The RF Design and Analysis Tool can be used which provides the ability to,
- Create and import circuits.
- Set circuit parameters.
- Analyse circuits.
- Display circuit S-parameters in tabular form and on X-Y plots, polar plots, and Smith-charts.
- Export circuit data to the MATLAB workspace and to data files.
Refer to the following documentation link for more information: The RF Design and Analysis Tool - MATLAB & Simulink (mathworks.com)
