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PCB Stackup Confusion

Question asked by robertnelson on Jul 18, 2006
Latest reply on Jul 21, 2006 by ALEPEREZ
Good day.  I am a new user for Momentum.  I have tried reading the user's manual and looking at the examples, but I am missing something.  

I need to simulate two microstrip traces place one on top of the other with an air gap between them.  The stack up is shown below.  

1) microstip line
2) dielectric material
3) ground plane
4) air gap (5 to 10 mm in thickness)
5) microstrip line
6) dielectric material
7) ground plane

First of all, can I do this in Momenteum?  
If I can, how do I define my substrate?

Thank you for your time, help, and patience.