External Antenna nrf52840 dk

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

  • 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.
    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
  • Hello Asbjørn,

    thanks for the quick reply! I am currently evaluating the coded phy solution against the Aircable. The application is to communicate with an implanted bluetooth device. Since the body is moving I dont always have the same signal strength and a high-gain directional antenna also would not work. Coded phy would be an attractive solution, however I am losing the advantage of the high gain omnidirectional antenna I can use with the Aircable. If the solution using coded phy works out in the evaluation, I would design my own Board with an nrf52 or 53 chip on it to use coded phy with.

    Best,

    Paul

  • Hello Paul,

    Good luck with the evaluation. The J1 connector can surely be used for your evaluations. Let us know if more questions should come up and we'll do our best to assist.

    Best regards

    Asbjørn

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