Custom nRF52832 board doesn't radiate

[Hossein Kasaei]

Hi,

I've developed a custom board with nrf52832 based on Nordic reference layout. The problem is that when I upload a BLE code, it doesn't appear in nRF Connect app. I tested the code on nRF52 DK and it worked well so this is an hardware issue, but I think RF front end is not the problem because it doesn't appear in nRF Connect at all even in a very close range. I'm using nRF Connect SDK. Blinky example works perfectly on this board.

Designed board :

SoC section schamtic :

Thank you in advance

[Hossein Kasaei]

Hi,

C13 has 0805 footprint which is not the most suitable option for the RF front end, but it is selected based on available components. 0.8pF capacitor with 0805 package is not wired, but your answer suspect me about the value of capacitor I bought, so I checked it with capacitance meter and found out that it is 4.7uF cap which is the supplier mistake. I'm going to change the capacitor and will announce about the result.