nRF52 s132 antenna steering

[Oskar Baginski]

Hello, recently I've been going through SDK v12.2 and board documentation but I can't find any info about choosing which of board's antenna to use. Simply, I'd like to know if I can send for example one packet of data by pin P0.09, then switch to pin P0.10, send another packet and so on.

[Jørn]

Hi Oskar,

As you mention GPIO P0.09 and P0.10 (Pin 11 and 12 on the chip) I assume you’re talking about the NFC antenna. The NFC antenna is a differential antenna which uses both pins simultaneously when sending, or receiving, a signal. So you do not choose between them when using the NFC.

For NFC antenna interface see Figure 6: infocenter.nordicsemi.com/index.jsp

The other antenna on the board is a single end monopole antenna for 2.4GHz BLE, which is connected to pin 30 on the chip (Not shared with GPIO). For further information, I recommend reading the NFCT chapter of the nRF52832 product specification

Best regards

Jørn Frøysa