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AWR2243: isolation (in dB) between each TX channel

Yuval Peleg
Prodigy 20 points
Part Number: AWR2243

Dear Expert.

I am using AWR2243 in a multichip cascading structure with dozens of AWR2243.

  1. What is the isolation (in dB) between each TX channel? 
    for example, If TX1 transmits chirp at full power 13dBm, how much power is transmitted over the other two transmitters (TX2, TX3).

  1. The transmitting power for each of the TX channels (TX1, TX2 and TX3) will be controlled via the register (CHIRP_TX_EN 0x0101 - AWR_CHIRP_CONF_SET_SB). Do you think this is the right approach?

  • 0
    TI__Mastermind 32865 points

    Hi,

    We will check this internally with the team and get back to you with an update on this by the end of the week.

    Thanks,

    Pradipta.

  • 0
    TI__Guru 58035 points

    Hello Yuval,

    The TX -TX isolation is better than 25dB, typically ~30dB for adjacent TXs.

    The transmit power level for each TX set using the "TX_OUTPUT_POWER_BACKOFF" parameter in the " AWR_PROFILE_CONF_SB" API. The 0dB backoff correspond to max power (~13dBm). As you backoff the power reduces correspondingly.

    The CHIRP_TX_EN parameter is used to enable/disable a particular TX in a chirp.

    regards,

    Vivek