This is the file in touchstone(S1P) format . It is in frequency
domain .we need to convert it to time domain.we got it from Vector
Network analyzer.And frequency rang is from 3 to 10 GHz. Total number of
sample is 201.the S11 is in dB.the file contain three column first column
contain frequency second column dBS11 and third show angleS11
(# frequency_unit S DB R impedance
freq dbS11 angS11)
(i think we did not need to convert angS11) just first and second column
need to convert.using mat-lab please can any ona can help me
Dear sajjad
I have the same problem with you，and i have use my S11 data to transform in time domain，the raw data is complex double.however i don't know if i did it right.Hope we can communicate this problem with each other.
Best wishes
Jingfeng Shan
Dear Jingfeng Shan
I have transfer it but in ADS .But i need in mat lab.If you need just conversion no matter what software use then i will do for you.
sajjad
Dear sajjad
i have do the transform finally in matlab.and i use the S21 in real and imag,but the way to transform is the same,you can see the raw data from figure.i use zero-padding and put the negative frequency data behind the positive frequency data(1024 points).the i use plot(abs(ifft(data))).and i got figure 2.i want to verify the outcome is correct or not in ADS,would you please teach me how to do it.
Jingfeng Shan
Dear Jingfeng Shan
yes i will do.Have you already used ADS before?if yes then send me ur email if not then send me the file. i will do it for you.
sajjad
Dear sajjad
I have used ADS before,and my email is [email protected]. by the way,have you already have the conversion from frequency domain to time domain in matlab？
Jingfeng Shan
Dear Jingfeng Shan
yes i have also in mat-lab. But i am not satisfy with that result
ok am sending.
sajjad
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