Hi Neil,
We can use the rfwrite command to create a Touchstone file in multiple way. These are some common way to use these commands:
- rfwrite(data,freq,filename) creates a Touchstone data file, filename. rfwrite touchstone files output 16 digits.
- rfwrite(netobj,filename) creates a Touchstone file from a network parameter object, netobj.
- rfwrite(_____,Name,Value) creates a Touchstone file using the options in the name-value pair arguments following the filename.
However, I don't think it is possible to add additional information to the header using rfwrite command.
Since, Touchstones files are text files you can use some text command to read in and modify the file if you want to append the header manually. The link below describes about writing data to text file
I hope this helps.
