Custom NRF52 No Antenna Signal

[ricewnr]

We created our own PCB for the NRF52 with a Johanson chip antenna but no matter what we do, we can't get a signal from the Antenna, not even a weak one to show up on the spectrum analyzer. We verified that the NRF52 chip itself works by running a peripheral example.

Has anyone else run into this problem, can you take a look at our design? We're missing a pi network but we should still see something right?

We've consulted the following questions: devzone.nordicsemi.com/.../ devzone.nordicsemi.com/.../

Gerber files for pcb layout nrf52_pcb_layout.zip

Bill of Materials

nrf52_pcb_layout.sch

[ricewnr]

We used the official NRF52 DKs to test and prototype. We then created our own PCBs with parts we sourced from digikey and mouser. The materials are not exactly the same from the same vendors but they are of the same specifications and footprints.

I believe we did verify that the crystal is mounted correctly but we can verify it again. We'll also test the values of all of our capacitors to ensure they are mounted in the correct place.

I uploaded the BOM and schematic.