Hi guys, I'm trying to desing PCB for RF applications and I'm getting confused about ground plane....
My track is 0,75mm width and I need 0,15mm space from surrounding ground plane (to achieve specific track impedence).
I design ground plane but even setting Isolate to 0 value I still have more than 0,15mm spacing from ground; so I need to set Clearance value to 0,15mm into design rules, but in this way all tracks of board get spaced of 0,15mm.
How can I set specific spacing ONLY for specifico polygon?
Thanks.