any cure to that IE3D behaviour?
One quick question.
In IE3D if I set up a GND atop of dielectric (same Z-dimension) and I wish to change the thickness of the dielectric, IE3D complains that volumous metal is not permitted. So far so good. But IE3D accepts my input to change the dielectric thickness. Well, here is where the nasty bug (what I believe) starts. If I wish to change accordingly the GND layer, it is not possible. There is a warning message and I am forced to delete the GND and set it up again with the proper new Z-dimension.
I guess it is a bug but if it has been fixed I wish to know the solution.
Thanx in advance,
cheng
At this time, IE3D does not allow a user to define an infinite ground with thickness. The automatic checking feature does not allow you to change the substrate thickness. It is inconvenient. It should be improved soon.
Dear cheng,
thickness is not influence the performance of an infinite ground plane. if you want to model the thickness, you should use finite ground planes. infact, you can suppose that the infinite GP has an infinite thickness!, there is no difference (remember the skin effect on metal surfaces).
rgrds, marti
Marti, I think you misunderstood my question. I still believe it is a bug though.
The question was:
If I have a top Z-coordinate of a stack say 5mm and I have infinite GND, at the same level. And if now I want to change that to say Z = 4mm, what I would do is to change the Z- of the dielectric, where the message about the finite thickness appear. It is not a warning message, it is an error message and yet I am able to set up the dielectric Z to 4mm.
And now if I wish to legitimately change the Z of the GND from 5mm to 4 mm, it ain't possible. If the checking routine would be working properly it must be able to verify that there is not finite thickness and should let me do it.
Alas, it does not and I have no choice but to delete the GND at 5mm and define it again at 4mm.
That was my problem and is a bit annoying to have to redefine it that way.
Hope it is clear now.
Jian, I would suggest that your checking routine does the finite thickness check up upon OK button event and not upon change in the focus of the respective control. Therefore you would allow the user to do whatever mess he/she desires and will issue the message at the end. That is a very small change I guess.
ok, i got it; yes it is a real suffering bug. my solution is to delete both dielectric layer and the ground plane, and then add them at the new coordinates! we should contact zeland to fix it i think, couse i have a lot of problems in aperture coupled p@tach antennas (for parameter study).
marti
We will make the change.