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  • Case ID: 324285
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Noise on PCB during 2.4GHz RF transmission

MinhDuc

Hello friends, 

I am using nrf52840-CKAA for my customize PCB. 

I am facing the noise during RF transmission on my ADC. The peak noise happen when I send a packet of data via RF antenna. 

Power_Tx = 4dBm

 

When I decrease the Tx Power to -12dBm, the peak noise was gone.

I wonder that MCU takes a lot of power during RF transmission so it affect to the stability of power line. 

In nrf52840-CKAA, currently I tie all VSS pin together instead of tie each of them directly to the GND plane. Is it the problem? 

I appreciate all your suggestions. 

Minhduc

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    Hi

    I will have to wait for some of the HW engineers to come back from Easter vacation, so someone will be able to help you Tuesday April 2nd. In the meantime, can you upload the full schematics and gerber files of your design so we can conduct a proper HW review on our end? If you'd like I can set this case to private mode so the files you upload will only be visible to yourself and Nordic engineers.

    Best regards,

    Simon

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  • 0

    Hi

    I will have to wait for some of the HW engineers to come back from Easter vacation, so someone will be able to help you Tuesday April 2nd. In the meantime, can you upload the full schematics and gerber files of your design so we can conduct a proper HW review on our end? If you'd like I can set this case to private mode so the files you upload will only be visible to yourself and Nordic engineers.

    Best regards,

    Simon

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