This post is older than 2 years and might not be relevant anymore
More Info: Consider searching for newer posts

Regarding nRF51822 Range Extend

Hi All.

For my project I need a very long range BLE Communication. Don't know if its possible to get a range close to 1 Mile LoS. But my goal is to meet max possible range.

I made a custom Board using nRF51822 and with good RF tuning I have achieved close to 200 Feet LoS range using Chip Antenna. Now I like to have your advise regarding implementing RF Power Amp to get a max possible range.

Ca anyone share a such reference design of nRF51822 with PA implementation? Or any good PA chips?

Thanks in advance.

Awaiting for your revert.

Regards.

Parents
  • Hi Asbjørn.

    Thanks much for reply.

    Actually my project need both communication. Device to Device (for Bidirectional Data) as well as Device to SmartPhone (For Bidirectional and Broadcast).

    In this case, as Device to SmartPhone also needed, so I am not able to choose other RF than BLE.

    I have some more ques:

    • To achieve Extend Range, do I need to consider LNA too? Or only PA will be Ok? There are some RF Front-End (PA+LNA) Chip ... do I need to consider that?

    • My project don't need always Extend Range of communication. So, when short range communication is needed, then I wanted to Bypass PA (and back to +4dBm) to save Power. In summery, I want to have an option to enable/disable PA (to Switch from Extend to Normal Range Mode and Vice-Versa). Is there any way to do this?

    • With +20dbm Output Power and good Antenna (Chip) Tuning ... what can be the max LoS Range in practical?

    Waiting for your comment and advise.

    Regards.

  • Hi Asbjørn.

    Thanks for explaining abut PA and LNA.

    For now I am thinking to use the below PA.

    www.skyworksinc.com/.../SE2604L_202437B.pdf

    can you please comment if its a good choice with nRF51822?

    Regards.

Reply Children
No Data