I'm creating large circular pads (13.5 mm diameter) for some capacitive buttons on ALTIUM.
I want to create a circular clearance non-copper space area around each of these pads (around 1..2 mm) to keep a distance from the ground copper surrounding area around these pads, as recommended below.
My 0.2 mm tracks for each PAD are on the bottom side of the PCB, like this:
I can create this clearance area as a general rule, and it works, but then it's applied to all types of pads in the PCB. I wanted this "rule" to be applied to only a single type of PAD and leave the others out.
Is there a way to do it? I tried changing the paste and solder mask expansions to no difference, and it always end up like this:
My 0.2 mm tracks for each PAD are on the bottom side of the PCB, like this:
As a side question, does it matter to have a hatched ground (as recommended in the picture below) or not around the pad sensors?
I'm doing a hatched one, but I can easily make a solid GND around the pad sensors.