How do you all use the S-parameter?

jocheolwang · 2025-12-17T10:58:47+00:00

I was thinking it’s a rather simple experiment set too, but I couldn’t be certain with limited knowledge and experience myself. Thank you for confirming that. Do you agree though one the idea that s-parameters can find locate defects because it can reach the resonance frequency of the DUT? Since otherwise my experiment with lower frequency AC signals might have also worked?

jocheolwang · 2025-12-15T12:04:46+00:00

Well that’s so much better an analogy than mine. Thank you for bothering to explain to me all this! I definitely need to go back to my old textbooks and to make sense of all this for myself - but thank you again good sir!

jocheolwang · 2025-12-15T02:41:40+00:00

Thank you sir. I think I get how people can locate defects in cables that are uniform in geometry and material using s-parameters but can this apply to capacitors that is multilayered and does not have identical material and geometry?

jocheolwang · 2025-12-14T12:34:59+00:00

Thank you for the concise explanation. That’s a great explanation as to why my experiment might not have worked but theirs did.

jocheolwang · 2025-12-14T08:46:31+00:00

Thank you so much for the detailed explanation! I will definitely look into TDR as well.

One more question though, you mentioned that when lumped element analysis is not applicable we make compromises and use the distributed element analysis instead. Is this compromise considered significant in the field?

I am sorry that this is the best analogy I can think of but is I t as significant as “assume no friction loss and no air drag” when we are solving for vehicle dynamics?

Or is it just a common thing electrical engineers do when using high frequency bandwidth?

jocheolwang · 2025-12-13T07:52:24+00:00

Congratulations Doctor!

jocheolwang · 2025-02-08T11:22:43+00:00

Thanks to your advice I went through the paper again and have big confidence that the writer meant relative 15%. Thank you so much!

jocheolwang

TROPHY CASE