Momentum help for CPW design

[asmodeus]

Hello all. I want to design at Momentum a tapered CPW as depicted in the picture I attached because I want to simulate the S parameters,but need help. First of all, how can I define the black area as conductor and the red area as nonconductive layer?

 

[vfone]

Right click on red, Properties, and chose metal layer.
For black area (substrate layer) go to Momentum, Substrate, Open, and modify or chose a different substrate layer.

 

[besttor]

Right click on red, Properties, and chose metal layer.
For black area (substrate layer) go to Momentum, Substrate, Open, and modify or chose a different substrate layer.

If your layout is as the attached, you need to map a slot layer on the substrate layer. and draw the red polygons on this layer.

To check the layout, you could use EMDS-> 3D EM preview to see the real layout.