I have developed custom PCB with nRF52832. My antenna layout is very similar to layout present on nRF52DK (PCA10040). All works well. Now, in next prototype, I want to add coil for Qi charging (receiver) with dedicated IC. Due to very limited space, coil will be very close to BLE antenna (see picture).
Some parameters: Coil with diameter 19mm is stick at bottom side of PCB. Here on picture shield is square with side 20mm, but I can (and probably I will) extend it to whole board, except of course empty space where is placed antenna for BLE. Shield with thickness 0,1mm and permeability 200 or more. I'm not using NFC.
I can accept problems with BLE communication during charging. My most important question is about reliability. If I use such solution, is there risk to damage nRF chip or other component on board?
regards, Gregor
