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IWR6843: Maximum range of our "best" mmWave solution

Jason Rubadue
Intellectual 1165 points
Part Number: IWR6843


Hi there,

I have a couple of customers who want to push the limits on the range of our mmWave solutions. Which ICs would provide the farthest range and do you have any design tips on how to achieve this?

Thanks!

Jason

  • 0
    TI__Mastermind 40965 points

    HI, Jason:

    Basically, the maximum range is related to chirp design.   Design a chirp that support large max range.  Which will mean larger range resolution, and large number of ADC samples per chirp.  

    The maximum detectable range is related to

    1) Highest TX power and antenna gain, which means narrower field of view, more antennas.  

    2) Highest sensitivity on the received chain, i.e., lower noise figure.

    3) High reflection ratio of your object.

    I would suggest you to use xWR1843 (or IWR6843 depend on RF frequency) ISK board, which has 3 antennas, more on chirp memory.  Or you can use cascade system (which cascade 2 or 4 chirps), which will increase your detectable range greatly.

    Best,

    Zigang