Re: HFSS Object intersection
Simon,
If it makes you feel better, then yes, you can subtract the inner object from the outter, but this is not necessary. For instance, let's say I make a cylinder of air. Then I put another cylinder of some dielectric completely inside the air cylinder. HFSS will assign precedence on the dielectric over that of the air where appropriate.
Now I can subtract the dielectric cylinder from the air cylinder and then re-fill the air cylinder with another dielectric cylinder of the same size. When you simulate the structure, you will get the exact same answer as before. But this requires an additional couple of steps, so why do it?
Hope this helps!