Export PCB design from Altium to CST Microwave Studio

[Sherry1]

I have designed a PCB for ceramic chip antenna test ( its a copper pour ground plane with an SMA port connection and solder pins for placing chip antenna on it).
I wanted to simulate its effect on the radiation pattern of antenna in CST Microwave Studio. I have made a model of chip antenna in CST MWS but.... Is there a way that I can export this PCB design ( made in Altium Protel) to CST Microwave studio and simulate it? SO that I dont have to draw the ground plane all over again?

The PCB design is attached

 

[reidintransit]

What file formats are available for export from Protel? .SAT would work if it's available.

 

[Sherry1]

.SAT is not, there is .DXF but that is 2D :-(
Here are the import/ export format both the software accept.
**broken link removed**

and for CST https://www.cst.com/Content/Products/MWS/ImpExp.aspx , The description of CST PCB Studio does say that it accepts Altium files but my educational license does not permit access to PCB studio , my program crashes !

Please help

 

[reidintransit]

try the .stp or step format. looks like it's on the export list for altium and on the import list for cst.