I have tried the following methods, to no avail.
1. Using the circle tool - cannot edit the circle to form the split with polygon cutout or tRestict and cannot assign signal name. The circle is treated as an uneditable shape.
2. Creating circles with the polygon tool - I created a circle with the polygon tool by alternating between wire bend style 0 and 4 and making the polygon solid. I then did the same with a polygon circle of smaller radius and set it to cutout polygon. The problem with this is that I cannot place my smaller split ring within the cutout region of the inner larger split ring.
3. Using the arc tool - I could make the shape of the ring, except when I try to cut out the split it behaves the same as the circle - it is uneditable (polygon cutout & tRestrict rectangle do not react with the arc).
4. Single solid polygon, using tRestrict - this is the closest I've come to as a solution, where I use circles in tRestrict to cut out the spaces between the solid rings. Problem is, the boundaries of tRestrict form really jagged edges, and I need it to be smooth (as it is a resonator).
I have spent far too long trying to figure this out and am currently at a mental block. Any help would be appreciated.
Here is a link to what I want to make, as well as my attempts: https://imgur.com/a/CSGOg