Hi.
I am trying to implement the reference layout for nrf54l15: https://docs.nordicsemi.com/bundle/ps_nrf54L15/page/chapters/ref_circuitry.html
Just a quick question. Is there supposed to be a grounding under then antenna for the bottom layer?
It looks like it from the drawings.
Boggibill said:No wonder there coverage is bad when there's no antenna attached to it :)
An antenna is nice to have! 
Boggibill said:Do you have any examples for an antenna without the connector? Or can i just remove the connector and connect that specific antenna to the reference layout?
Yes, you can just remove the connector. If you're not able to connect the antenna directly at the end of the radio's matching network, remember to use a 50-ohm coplanar waveguide for the connection between the radio's matching network and the antenna's matching network.
On the DK, there is no antenna-matching network, but I'd recommend adding a shunt component for matching of the antenna if you're planning to use a PCB trace antenna. If you find out you want to use a chip antenna, you should use the matching network found in the antenna's datasheet. This will in most cases be a Pi-network.
We do have a white paper for designing a quarter-wave monopole antenna, that you might find helpful.
