But I’m not sure how to create the ground, as it would essentially be a rectangle which would have on one side a bend the same radius as the signal line. Is there some way to create this? Maybe using Euler bends or free form curves?
The nd.strt() and nd.bend() functions are a bit of shortcut functions to get started quickly.
If you need interconnect functionality using strt, bend and other waveguides you get a lot of extra milage when using them in as part of the Interconnect class: