offset stripline with slot in the ground plane

Hi

I simulated effects of cutting slots in upper ground plane of offset stripline structures using Momentum.

Momentum model:

FreeSpace
-------cond2 slot
dielectric1
-------cond strip
dielectric2
//////GND///////

Could anyone help in putting right the model in CST also?

Regards,
rinox

Hi,

I run simulations in CST with Discrete ports defined for sumulating offset stripline structures. The reference of the ports (i.e. ground) is chosen to be the closest ground plane of the offset stripline structure. Now, when different slots are cut in the above ground plane just above Discrete ports, it seems that the port lose its reference. Is there any other possibility to define ports in a offset stripline structure that has slots cut in the ground plane define above the ports?

Regards,
rinox