Touchstone file MATLAB code

13 views (last 30 days)
Jose Iglesias
Jose Iglesias on 5 Sep 2022
Edited: Jose Iglesias on 5 Sep 2022
Trying to create a touchstone file to import into ADS at a frequency of 4 GHz. I know how to implement the Sparameter data as seen below. I am having issues trying to implement the data for the minimum noise figure Fmin=1.6dB, the optimum reflection coefficient ropt=0.62*exp(j*100*pi/180), and then the effective noise resistance normalized= 0.4. A typical touchstone file is shown below following my S parameter data. Any suggestions? I included the script as an attachment: I do not know how to implement the Fmin, ropt, and the normalized noise resistance.The problem statement is shown at the end.
S(1,1)= 0.6*exp(-j*60*pi/180);
S(1,2)= 0.05*exp(j*26*pi/180);
S(2,1)= 1.9*exp(j*81*pi/180);
S(2,2)= 0.5*exp(-j*60*pi/180);
"Typical touchstone file:"
>> S11 = 0.894*exp(-j*pi/180*60.6)
S11 =
0.4389 - 0.7789i
>> S21 = 3.122*exp(j*pi/180*123.6)
S21 =
-1.7277 + 2.6004i
>> S12 = 0.020*exp(j*pi/180*62.4)
S12 =
0.0093 + 0.0177i
>> S22 = 0.781*exp(-j*pi/180*27.6)
S22 =
0.6921 - 0.3618i
>> S = [S11 S12; S21 S22];
>> m = touchstone2('Ex11_2',2000,S);
"Problem statement"

Answers (0)


Find more on Visualization and Data Export in Help Center and File Exchange




Community Treasure Hunt

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

Start Hunting!

Translated by