[SOLVED] HFSS 3D Layout - Define PCB Differential Waveports

[boboKof]

Hi everyone,

I'm new with HFSS 3D Layout. It is a bit different than the HFSS 3D CAD.
I'm trying to define 2 waveport over 2 differential nets. Both is on TOP layer and the reference ground is at Layer 4.
The main problem is that I get an Error trying to use Layer 4 Ground as negative for both ports.



Thanks for your help!

 

[Airbag79]

Hi everyone,

I'm new with HFSS 3D Layout. It is a bit different than the HFSS 3D CAD.
I'm trying to define 2 waveport over 2 differential nets. Both is on TOP layer and the reference ground is at Layer 4.
The main problem is that I get an Error trying to use Layer 4 Ground as negative for both ports.
View attachment 144016

Thanks for your help!

What is the error? Also, layer 4 is a poor return current path, as your return current will be constrained to L3 and L1.

 

[boboKof]

I though the return pass is in layer 4, but it actually in layer 3.

Thanks for noticing and for your help.