The Error Vector Magnitude (EVM) performance of the Nordic7002EK in the 5G frequency band is not good

Hi all,

I am using the Nordic 7002 EK board with the Nordic 5340 DK board.

When I conducted the production testing (using IQ xstream), I found that for TX-HT-MCS7 in the 5520 channel, the TX power was 14.5 dB but the EVM was only about -20 dB (usually it is about -27 dB).

I checked the OTP area to see if I could decrease the TX power to improve the EVM, but only the MAC address or the CALIB can be changed.

Is there anything I can do to improve it or is this the limit for the EVM test?

Thanks & regards