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IWR1243: Can AWR1243 use all 3 Tx transmitting in parallel ?

Shai Berman
Mastermind 7405 points
Part Number: AWR1243

Hello,

Please can you advise me back if AWR1243 can transmit 3 TX simultaneously (with less power per channel is accepted)?

Thanks in advance

KR

Shai Berman

  • 0
    TI__Mastermind 23725 points

    Hi Shai,

    AWR1243 does not allow more than two Transmit antenna's to be simultaneously. This ticket is assigned to an expert to provide you with more information regarding this.

    Thank you,
    Vaibhav

  • 0 in reply to Vaibhav Mahimkar
    Mastermind 7405 points
    Thank you Vaibhav,

    If that's the case I'd like to know if you can provide me reference design or applications note of using multi chip solutions which mean cascading 3-4 AWR1243 devices together.
    I could not find any material on TI's website.

    I would greatly appreciate your help
    Sincerely

    Shai Berman
  • 0 in reply to Shai Berman
    TI__Genius 11405 points

    Shai,

    The cascade design is still work in progress. The application note is not ready to be released yet. 

    I will update you with the available date later.

    Regards,

    Michelle

  • 0 in reply to Vaibhav Mahimkar
    Mastermind 7405 points
    Vaibhav Hello,

    Can you please advise if TI's solutions technically can transmit through 3 antennas but in reality it does not happen, if it a heat problem?.

    And if the customer theoretically will manage to decrease the heat he will able to reach a state of transmit 3 ants in parallel?
    What are the max TX power per channel simultaneously state?

    Thanks ,
    Shai
  • 0 in reply to Shai Berman
    TI__Mastermind 23725 points
    Hi Shai,

    We would like to understand the need for multiple simultaneous Transmitters from application perspective to better guide you.

    Thank you,
    Vaibhav
  • 0 in reply to Shai Berman
    TI__Guru 58035 points
    Hello Shai,
    Presently we do not allow 3 TX transmission simultaneously. We will look at adding this flexibility in future releases.

    Regards,
    Vivek
  • 0 in reply to Vaibhav Mahimkar
    Mastermind 7405 points
    Hi Vaibhav,

    Currently, the client is using a competitor's chipset with 3 TX configuration transmitting simultaneous, and his currently trying to reproduce the same unique technique with our solution.

    Sincerely,

    Shai Berman
  • 0 in reply to Vaibhav Mahimkar
    Mastermind 7405 points
    Hi Vaibhav,

    Currently, the client is using a competitor's chipset with 3 TX configuration transmitting simultaneous, and they currently trying to reproduce the same unique technique with our solution.

    Sincerely,

    Shai Berman
  • 0 in reply to Shai Berman
    Expert 2090 points

    Hi Vaibhav & Shai:

    I have the same question. Are the three transmit enable simultaneously something that is discouraged due to power consumption in AWR1243 ? i am assuming the silicon is capable of doing it.

    I would think that since AWR1243 is the only cacadable option within the AWR series, the three simultaneous transmit brings out the true benefit to the max.

    Additionally there is competitor chipset which have the similar

    IF bandwidth, are cascadable and have the three transmits operate simultaneously. Will 3Tx be possible in AWR1243 ES 2.0 or higher ?

    Best Regards,

    RJ 

  • 0 in reply to Vivek Dham
    Mastermind 7405 points
    Hello Vivek,

    Could you please advise whether the 3 TX option will be adding to the current silicon version or there will be a reversion silicon with this features?
    Second, can you advise me what is the maximum transmit power for each channel on two antennas transmitting at the same time (AWR1243)?

    Thanks in advance and Regards,
    Shai Berman
  • 0 in reply to Shai Berman
    TI__Guru 58035 points
    Hello Shai, RJ,
    We would have a device variant of the 1243 where would enable the 3TX simultaneous operation. It would be pin compatible with the present one.

    Regarding the maximum transmit power, it is around 12dBm on each transmitter. This remains the same even when two transmitters are operating simultaneous.

    Regards,
    Vivek
  • 0 in reply to Vivek Dham
    Mastermind 7405 points
    Hi Vivek,

    Thank you for the information.

    Regards,
    Shai
  • 0 in reply to Shai Berman
    TI__Guru 58035 points
    Hello Shai, RJ,
    You can contact your local TI sales personal for evaluation samples of the 1243 device variant with 3TX operation.
    One thing to note is that in this device variant if you want to use 3TX simultaneously you would have to use the 1V RF supply mode (bypass internal LDO) instead of the 1.3V mode (with internal LDO) and also feed the 1V supply on the VOUT_PA supply pins (Pin # A2 and B2) in addition to the 1V on RF1 and RF2 supply pins.

    Regards,
    Vivek