How do I export data from an .s2p file in MATLAB?

139 次查看（过去 30 天）
Alexandria Will-Cole
回答： Mark 2022-6-7
Hi,
I have a sequence of .s2p touchstone files that I need to analyze data from. I am currently using the RF toolbox and have used these commands to export the data:
%load in touchstone s2p data file
data = read(rfdata.data,myfilename);
%sort by data
freq = data.Freq;
s_params = extract(data,'S_PARAMETERS',50);
% data
s11 = s_params(1,1,:);
s22 = s_params(2,2,:);
s21 = s_params(2,1,:);
s12 = s_params(1,2,:);
However, I'd prefer to export the data in a more manual way and not use the toolbox command, because I'm not sure if it is identifying the correct columns of data... it doesn't make 100% sense when I do this. Is there a way I can open the file and import the file as a matrix then seperate out the data? I'm thinking of using something like this:
f = myfilename(:,1); ReS11 = myfilename(:,2); ImS11 = myfilename(:,3); ReS21 = myfilename(:,4); ImS21 = myfilename(:,5); ReS12 = myfilename(:,6); ImS12 = myfilename(:,7); ReS22 = myfilename(:,8); ImS22 = myfilename(:,9);
%Creating the S Parameter Matrix
s11=ReS11+1i*(ImS11);
s12=ReS12+1i*(ImS12);
s21=ReS21+1i*(ImS21);
s22=ReS22+1i*(ImS22);
I just am not sure how to actually get the data imported into my MATLAB script in an automated way. Please help!
Thanks,
  2 个评论
Alexandria Will-Cole
Alexandria Will-Cole 2018-11-27
I understand the file format of touchstone files, but my coding in MATLAB is still novice. I just want to know how to import the .s2p file into MATLAB without using the RF Toolbox in MATLAB, because it is not importing correctly. How can I do this manually in MATLAB?I also want my code to be fairly generic in case I want to change languages from MATLAB to something like python.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Mark
Mark 2022-6-7
The RF Toolbox offers an sparameters object that can read in and manipulate data from Touchstone files
Calculate S-parameters for RF data, network, circuit, and matching network objects - MATLAB sparameters (mathworks.com)
>> obj = sparameters('passive.s2p')
obj =
sparameters: S-parameters object
NumPorts: 2
Frequencies: [202×1 double]
Parameters: [2×2×202 double]
Impedance: 50
rfparam(obj,i,j) returns S-parameter Sij
The RF Toolbox also offers many functions for manipulating and plotting S-parameter data.

更多回答（1 个）

Alexandria Will-Cole
Okay, I just noticed the first link. The only problem I have with that is that they are reading in a text file. Do you know how I can change the file extension on my .s2p files within my script? There are too many to do prior to the code.

类别

在 Help Center 和 File Exchange 中查找有关 Visualization and Data Export 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by