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AWR1243: Phase drift of TxRx channels in MIMO mode

Vladimir Kolinko1
Prodigy 240 points
Part Number: AWR1243

Hi,

With all internal calibration of the awr1243 enabled what would be a reasonable expectation of the RMS phase drift over time of TX-Rx pair signals path within+-10 C of ambient (e.g. 20C ) temperature.

Thank you,

Vladimir Kolinko.

  • 0
    TI__Guru 58035 points

    Hello Vladimir,

    Within a +-10deg temperature range the phase drift of Tx-Rx pair would be very small . But if you have the run time calibrations enabled and if the temperature crosses a boundary where the gains a changed internally then there could be large phase jump (in absolute terms) at that point. This jump would be seen across all the Tx- Rx pairs of the device , so typically its not an issue. But incase its an issue for your application you can disable the run time calibrations to avoid any phase jump.

    regards,

    vivek