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Hello,
I got experimental results from a flat cable from molex and I want to extract S11 from ref FFC-15021-0415.
Molex cannot give me the S-parameters files so I want to extract data from graphs.
My aim is to obtain S11 and then use FFT to get TDR response on it so I can after get TDR of impedance along the line.
I got VSWR(S11) measurement from a molex flat cable 4 inches long and I want to obtain S11, so I do : S11 = (VSWR-1)/(VSWR+1) but the result I got is not consistent...
My experimental data are the one below :
I import the value to Matlab using a tool to extract the data :
and after extracting the magnitude from the db and done the math in Matlab and I got this :
Normaly S11 would be something periodic along the frequencies like the one below but it is not the result I got ...
Any idea ? Thanks you !
I got experimental results from a flat cable from molex and I want to extract S11 from ref FFC-15021-0415.
Molex cannot give me the S-parameters files so I want to extract data from graphs.
My aim is to obtain S11 and then use FFT to get TDR response on it so I can after get TDR of impedance along the line.
I got VSWR(S11) measurement from a molex flat cable 4 inches long and I want to obtain S11, so I do : S11 = (VSWR-1)/(VSWR+1) but the result I got is not consistent...
My experimental data are the one below :
I import the value to Matlab using a tool to extract the data :
and after extracting the magnitude from the db and done the math in Matlab and I got this :
Normaly S11 would be something periodic along the frequencies like the one below but it is not the result I got ...
Any idea ? Thanks you !
Last edited:
