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AWR1843BOOST: How to enable all three transmitter for beam steering?

Anuradha Singh
Prodigy 30 points
Part Number: AWR1843BOOST
Other Parts Discussed in Thread: AWR1843

Hi There,

I am trying to do the beam steering using the AWR1843BOOST board and need all three antennas to be ON. I wonder if it is sufficient to set the transmit antenna mask to 7 in channelCfg command. The command used in script is:

channelCfg 15 7 0 

and then I did change in chirpCfg command:

chirpCfg 0 0 0 0 0 0 0 7

Is it sufficient to turn ON all three transmitter antennas? 

Am I doing it correctly and how can I confirm the same? Could you please provide any information on it? Many Thanks.

Anu

  • 0
    TI__Mastermind 35035 points

    Hello Anuradha,

    So the configuration you have used for enabling the 3 Tx antennas is correct. But I also see that you are not configuring the chirp configure parameters, so for that you need to configure and see how its designed in the demo provided in the mmwave sdk demo
    For more information you can also follow the user guide present in the path c:\ti\mmwave_sdk_03_05_00_04\docs\mmwave_sdk_user_guide.pdf in the configuration commands

    Regards,
    Saswat Kumar

  • 0 in reply to Saswat Kumar
    Prodigy 30 points

    Hi Saswat,

    Thank you for your reply. Yes, I am following the document that you have suggested. Thanks.

    On page number 28 of the AWR1843 datasheet, it is written that "3 Transmitters can simultaneously be deployed only in AWR1243P and AWR1843devices with 1V / LDO bypass and PA LDO disable mode. In this mode, 1-V supply needs to be fed on the VOUT PA pin. In this case, the peak 1-V supply current goes up to 2500 mA." This means only setting the mask in channelCfg command does the purpose. Is that correct?

    Regarding chirpCfg command, I am only using one profile config, that's why the starting three bytes are 0 and I am not setting other parameters except Tx enable mask. 

    Many Thanks.

    Anu.

  • 0 in reply to Anuradha Singh
    TI__Mastermind 35035 points

    Hi Anuradha,

    So the chirpcfg is the command that is enabling the 3 transmitters at the time for that chirp.
    The channelcfg command is just for enabling the number of transmitters, so that it can be used later while transmitting the chirp.

    Regards,
    Saswat Kumar