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Understanding of hardware around of 52833 and 5340 required for direction finding implementation

Hello

We're a startup company focusing on innovative smart home and security technology solutions, evaluating our way into beacon/locator design to support BLT 5.1 capabilities, in particular, direction-finding

I realize there are three nRF chips currently available to support both AoA and AoD: 52820, 52833 and 5340

Few questions I'd appreciate to get clarified:

1. Do these devices include an internal antenna switcher or the RF switch shall be implemented separately on the PCB and controlled by the aforementioned devices (through GPIO's ?)

2. There were multiple threads here in the forum asking for the direction-finding support from 52833/5340 hardware DK/SDK demo, but those questions were in quite far past (a year ago and farther). So trying again - does Nordic have now probably support for such demo in the current hardware DK and SDK for these devices?

3. If neither of 52833/5340 has an integrated RF switch, what are recommended parts to accomplish that task?

4. Does the direction-finding require more frequent transmitting cycles for beacon in the case of AoA than it would be without the direction-finding? (i.e. for instance, without direction-finding  - using long intervals of 0.5-1sec to preserve battery) ? Are we constrained by the 5.1 prescribing minimum allowable CTE transmission sessions per second? Or this is only limited by the required application performance as a locator?

Thank you

Alex

Parents Reply
  • Thanks Simon

    The point is that Quuppa claims on their website that their system (tags + receiver) are capable to perform direction finding in either proprietary way or with compliance with BT5.1

    Hence I was a little confused by the fact that they use a "non-direction compliant" chip such as 52832 but somehow still achieve direction finding in a BT5.1 compliant way

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