Thank you Andreas so much for taking the time to create such an interesting training video. Please remember that not all of us are smart and knowledgeable as you so try to explain more the basis :-) thank again
Thank you Andreas for this excellent video. 1) How did you decide on the gap between the external tube and the shield/screen? 2) When you say to "scale" the transfer impedance for the length, how is that done? 3) How would you modify the model for a serve/twist type screen (e.g. 22 wires twisted every 5mm with 90% coverage)? 4) Since CST Cable Studio currently does not support the serve/twist screen type (please ask them to add it), how can a micro-coax similar to "9442 WH033" from Alpha Wire be modeled? Perhaps by first simulating the transfer impedance and then plugging that simulated curve into the Cable Studio's "Simplified" screen type with Model type = "Measured curve." 5) If that's a good strategy, how do we then generate the "self-impedance" curve needed to fully define the "Simplified" screen? 6) Also, could you please post your models for us beginners to learn?
Thanks, let me try to answer: 1) good point. did not think much about this. Typical diameter of a measuring tube assumed. Probably there will be some mutual inductance between outer shield and tube but I have not looked at it in detail. 2) Simply divide by actual length in meters 3 + 4) You can always create a high detailed model of the screen for a unit length of the twist and then load the transfer impedance into cable studio as you write. The question is: Is such a high accuracy required/will it matter? Also how does the 90% coverage distribute over the circumference? 5) You can export the impedance curve (Ohm/m) from Design Studio (like I did in this video) and load it into Cable Studio. 6) It is difficult to share over TH-cam. Also links are removed. I have send you a LinkedIn connect request.
How would you simulate a twisted pair with shield? One conductor has the Plus and other return, and the shield is protecting this twisted pair. Is this difficult to setup?
Thank you so much for this tutorial. In your model, how did you model the input and output terminals? I mean in the input you excite it by using a voltage source (shield+outer cylinder). how about the output? did use a short circuit? are there any 50 ohms impedances at the input and output terminals?
The calculation is based on S-Parameter to Z-Parameter conversion, not an ideal voltage source. In the 3D simulation I use a 50 Ohm S-Parameter ports. But if you convert from S domain to Z domain that impedance is no longer important.
@@AndreasBarchanski Thank you so much for your reply. I have obtained the same results by using the HFSS software. However, I want to use CST but, unfortunately, I am not a CST user. can you make small toturial in how to build the model (transfer impedance simulation) in CST in order to help the new CST users. once again thank you so much.
Thank you for the video. Very interesting
Thank you Andreas so much for taking the time to create such an interesting training video. Please remember that not all of us are smart and knowledgeable as you so try to explain more the basis :-) thank again
Great demonstration, thanks! ツ
Thank you Andreas for this excellent video.
1) How did you decide on the gap between the external tube and the shield/screen?
2) When you say to "scale" the transfer impedance for the length, how is that done?
3) How would you modify the model for a serve/twist type screen (e.g. 22 wires twisted every 5mm with 90% coverage)?
4) Since CST Cable Studio currently does not support the serve/twist screen type (please ask them to add it), how can a micro-coax similar to "9442 WH033" from Alpha Wire be modeled? Perhaps by first simulating the transfer impedance and then plugging that simulated curve into the Cable Studio's "Simplified" screen type with Model type = "Measured curve."
5) If that's a good strategy, how do we then generate the "self-impedance" curve needed to fully define the "Simplified" screen?
6) Also, could you please post your models for us beginners to learn?
Thanks, let me try to answer:
1) good point. did not think much about this. Typical diameter of a measuring tube assumed. Probably there will be some mutual inductance between outer shield and tube but I have not looked at it in detail.
2) Simply divide by actual length in meters
3 + 4) You can always create a high detailed model of the screen for a unit length of the twist and then load the transfer impedance into cable studio as you write. The question is: Is such a high accuracy required/will it matter? Also how does the 90% coverage distribute over the circumference?
5) You can export the impedance curve (Ohm/m) from Design Studio (like I did in this video) and load it into Cable Studio.
6) It is difficult to share over TH-cam. Also links are removed. I have send you a LinkedIn connect request.
How would you simulate a twisted pair with shield? One conductor has the Plus and other return, and the shield is protecting this twisted pair. Is this difficult to setup?
Please watch my video about shield break. Such a set up is simulated there.
Thank you so much for this tutorial. In your model, how did you model the input and output terminals? I mean in the input you excite it by using a voltage source (shield+outer cylinder). how about the output? did use a short circuit? are there any 50 ohms impedances at the input and output terminals?
The calculation is based on S-Parameter to Z-Parameter conversion, not an ideal voltage source. In the 3D simulation I use a 50 Ohm S-Parameter ports. But if you convert from S domain to Z domain that impedance is no longer important.
@@AndreasBarchanski Thank you so much for your reply. I have obtained the same results by using the HFSS software. However, I want to use CST but, unfortunately, I am not a CST user. can you make small toturial in how to build the model (transfer impedance simulation) in CST in order to help the new CST users. once again thank you so much.
@@oussamagassab3282 May i know how you setup in HFSS to achieve the same result?
Which software your using to simulate?
CST Studio Suite