Get frequency from sparameter object

I have imported a touchstone file (s2p) to an sparameter object using sparameters function in RF Toolbox:

Example_s_param=sparameters('Example.s2p');

I want to get the frequency vector from Example_s_param. I can see it when using disp(Example_s_param) - then it returns:

NumPorts: 2

Frequencies: [1001×1 double]

Parameters: [2×2×1001 double]

Impedance: 50

I want to save the "Frequncies" in a new vector I can use to plot stuff. Somehow I cannot figure out how to do this.

[Dennis Hoffmann]

its an object.

freq = Example_s_param.Frequencies;

[Frederikke Johansson]

That works - thank you!

Answer 1

[Payas Bahade]

Hi Frederikke,

‘Example_s_param’ is a structure with 4 fields viz. NumPorts, Frequencies, Parameters and Impedance. To access values in these fields, dot notation is used. For example:

S = sparameters('default.s2p');
Freq = S.Frequencies; % Storing 'Frequencies' field values from Structure 'S' into variable Freq

You can use following code to store frequencies as new vector:

Freq = Example_s_param.Frequencies;

For more details on accessing data in structure array, please refer this documentation.

Hope this helps!