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is multi antenna supported for nRF52832?

Kevin Chen

Hi,

I want to connect 4 antennas to nRF52832, they respectively points to North, South, East and West direction.

Also I hope the nRF52832 can do switch antenna job, so that I can send one BLE frame to one direction, and other BLE frame to other direction.

Is the nRF52832 can support the two scenes (including the hardware design and the SDK code) ?

Best Regards,

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    No, this is not supported out of the box, you can get only simple LOW/HIGH GPIO signal before/after radio event which might work well for Power Amplifier or Low Noise Amplifier (therefore this feature is called PA/LNA). However all nRF5x chips have only single radio peripheral HW block and single antenna input. You can see it pretty clearly in the specification as well as several Q&S on this forum (e.g. here). You can still probably use that to control multiple RF switches because you should be able to fork that PA/LNA signal through PPI to multiple GPIO ports. However there is no example so it's up to you or your FW developer.

    (also it's questionable if your solution with 4 directional antennas is better then two or even one omnidirectional antenna but I hope you have that modeled and measured...)

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    No, this is not supported out of the box, you can get only simple LOW/HIGH GPIO signal before/after radio event which might work well for Power Amplifier or Low Noise Amplifier (therefore this feature is called PA/LNA). However all nRF5x chips have only single radio peripheral HW block and single antenna input. You can see it pretty clearly in the specification as well as several Q&S on this forum (e.g. here). You can still probably use that to control multiple RF switches because you should be able to fork that PA/LNA signal through PPI to multiple GPIO ports. However there is no example so it's up to you or your FW developer.

    (also it's questionable if your solution with 4 directional antennas is better then two or even one omnidirectional antenna but I hope you have that modeled and measured...)

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