Inductive load contradicting short circuit load

[yefj]

Hello , As you can see in the simulation when we have a short load we have 0 impedance in the end because its 0 ohms.
On the other hand as you can see below in the simulation when we have inductive load then we have negative bump in the tdr.
A shorting via can ve viewed as inductor because its a straight line .
Why in our EM simulation I dont have negative bump as in the LTspice simulation?
Thanks.

 

[Baluncore]

You really make it difficult on yourself by using lumped element transition lines instead of the wide bandwidth TLINE model available in LTspice.

Your EM simulation has a filter in the transmission line, that appears to be missing from the LTspice lumped TLINE models.

Your lumped line has a sharp cutoff frequency that makes it difficult to see things at the far end. With TDR, I expect a positive kick from an inductive load, but followed by a low impedance. I expect a negative kick from a terminal capacitor, followed by a high impedance. All of that is hidden by the Gibbs effect of the sharp frequency cutoff, of your short lumped lines.

You get less help, and waste our time, when you do not attach the LTspice .asc and .plt files.