External Antenna nrf52840 dk

[Paul M.]

Hi everyone,

I need to implement a coded Phy ble communication in a project and for that I wanted to use an nrf52840 dk. However, for it to be able to compete with the Aircable Host XR5 I would use instead, I need to attach an external antenna with a better gain.
I saw the J1 connector, but as I understood it that is not recommended for permanent use. Is it possible to just solder a wire to certain pins to connect an antenna?

Thanks and best regeards,

Paul

[Asbjørn]

Hello Paul,

The place to solder a different antenna would be the same spot J1 is in, but I have to say that if J1 isn't a good enough permanent solution for you, it's unlikely that a hand soldered solution onto the DK instead would prove to be a better one. I'd recommend starting with the J1 connector and use that for your development.

The HW design files for the DK can be found here: https://www.nordicsemi.com/Products/Development-hardware/nRF52840-DK/Download?lang=en#infotabs

What sort of application is this? Are you looking at developing your own board in the long run or is this a one-off implementation? If it is just a one time thing, I'd stick with the J1.

Best regards

Asbjørn