Question about ADS EM layout: VIAGND

[erihengz]

I am using VIAGND in schematic simulation. When I generate the layout from my schematic, the hole in VIAGND still visible

But, after converting to symbol, the hole disappear, left only the pad.

May I know if I have set the wrong layer? I have tried to connect the pin in the symbol but looks like it is open circuit. (I have set up the hole layer in the substrate editor and set the VIAGND's hole responds to the hole layer)

 

[BigBoss]

What exactly would you do ?

 

[volker@muehlhaus]

May I know if I have set the wrong layer? I have tried to connect the pin in the symbol but looks like it is open circuit. (I have set up the hole layer in the substrate editor and set the VIAGND's hole responds to the hole layer)

From your description, it is not clear where the mistake is. If you have mapped layer "hole" to the correct via layer in your Momentum stackup, you should see the short in the Momentum dataset. Check that first, to see if your Momentum model is ok.

Then, you should get the same data in schematic simulation IF you have created the emModel view properly. By default, there is no emModel and you need to enable that!

See my appnote on emModel view: muehlhaus.com/support/ads-application-notes/emmodel