BOOSTXL-AOA: How to change the gain/offset of the ADCs in RF core? [AoA]

user5982383

Part Number: BOOSTXL-AOA

Hi,

I used the CC2640R2 and BOOSTXL-AOA antenna board to run the AoA demo code. I found out that some of the RSSI value of the aoa packets range from about -60dbm to -65dbm when the slave board are 2 meters away from the passive board. In these packets, the values of the IQ samples are about 20(max), which are too small to calculate the phase drift. (BTW, I have fixed the bugs mentioned in this link:https://e2e.ti.com/support/wireless-connectivity/bluetooth/f/538/t/770218)

I think the quantizing noise might impact the calculation. Is there any way to use more valid bits of the RF core ADCs, like change the gain or offset?

Looking forward to your reply.

Best Regards!

over 6 years ago

0 Marie H over 6 years ago

TI__Guru* 81321 points

Hi,

What version of the SimpleLink CC2640R2 SDK are you using? Are you using CC2640R2 LaunchPads or a custom board?

0 user5982383 over 6 years ago in reply to Marie H

Prodigy 20 points

Hi Marie,
I used both SDK2.3 and SDK2.4 to test and got similar results. I am using CC2640R2 LaunchPads.

0 Evan W over 6 years ago in reply to user5982383

TI__Mastermind 39620 points

Hi,

We recommend not making adjustments to the RF Core. Currently, a large part of our team is out of the office for the Easter holiday at the moment, so for a more precise response, we might have to wait until next week.

That said, do you see the same issues at distances greater than 2m?

0 Evan W over 6 years ago in reply to Evan W

TI__Mastermind 39620 points

Closing due to inactivity and assuming this has been resolved unless otherwise stated.

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BOOSTXL-AOA: How to change the gain/offset of the ADCs in RF core? [AoA]