bellow we see the S11 plot of a transmission line the wikipedia definitions of the reflection coefficient as a function of S-params. As i see it S-param frequency domain plot comes from time domain steady state. TDR is time domain in every moment from the start(transient) So how can we convert from S-param (steady state ) to TDR(transisent) how its possible? Thanks. [![enter image description here][1]][1] [![enter image description here][2]][2] [![enter image description here][3]][3] [1]: https://i.sstatic.net/rTnfO.png [2]: https://i.sstatic.net/75DFV.png [3]: https://i.sstatic.net/97NAH.png