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IWR1843: Is the IWR1843 Tx receiver limited?

Annie Liu
Genius 10295 points
Part Number: IWR1843

Hi Team,

The customer is experiencing below issue and needs your help.


1. Customer need to separate tx and rx by 50 mm. What does he need to pay attention to?
2. If he uses a very strong electromagnetic wave (such as 4 watts) to shoot at rx at close range, will 1843 be burnt out? Is there an limited radiation to prevent such problems?

  • 0
    TI__Mastermind 25825 points

    Hello,

    1) For increasing distance between TX and RX : Rx antenna spacing need to be maintained at Lambda/2 and Tx spacing need to be maintained at Lambda spacing. Rx section length need to be matched and Tx section length need to be matched. Long distance/Sharp bends on RF traces need to be avoided. 

    2) At what frequency these electromagnetic wave would be applied? And what is the distance between the Radar and application unit?

    Thanks and regards,

    CHETHAN KUMAR Y.B.

  • 0 in reply to CHETHAN KUMAR Y.B.
    TI__Genius 10295 points

    I apologize for any delay in responding to you due to National holiday in China.

    He used the 77ghz radar. The distance between the radar and the object being measured is 70 meters. The measured object is a 3 cm cube. Customer would like to know is there any good suggestion for him?

    Thanks.

  • 0 in reply to Annie Liu
    TI__Mastermind 25825 points

    Hello,

        The maximum amount of power that mmWave sensor could tolerate is 10dBm at the RF pins.  

    3cm cube could be very weak target at 70 meter distance. It would be challenging to detect it at large distance. 

    Could you please elaborate bit more your customer application scenario?  

    Thanks and regards,

    CHETHAN KUMAR Y.B.