Hello,
We are developing PBC with nRF52840 and we have problem regarding PCB layout. Because our PCB maker has minimal spacing between pad and track 0.2mm we can't make RF part of the layout like in the recommended nordic layout design. Is there any other way to route GND track to pin F23 within out PCB maker rules?
Hi,
If this is not possible, you will just have to ground C43 like 'normal'; connect it to the ground pour+via to the south, and try to see if you can fit a via between the NETC43_2 and DEC4_2:
The radio will still work, but you should expect having to tune the RF matching network components in order to get sufficient harmonic attenuation and good TX output power. We can assist with this if needed. Worst-case you will have to back off on output power a bit to get the harmonics down.
One recommendation could be to add another series inductor in the matching network, this is generally possitive for harmonic attenuation. See for reference the matching network in reference circuitry of nRF52833: 
Best regards,
Andreas
