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AWR1642BOOST: Change FOV (Field of View)

Neil29
Intellectual 470 points
Part Number: AWR1642BOOST
Other Parts Discussed in Thread: AWR1642,

Hello,

Currently the FOV for Driver's Vital sign demo is ±60º, but is it possible to change the FOV for this project demo?

How this can be done?

Regards,

Neil

  • 0
    TI__Mastermind 24955 points
    Neil,

    The FOV is a function of the physical antenna on the EVM and not something in something defined in software. You use several different kinds of lenses to focus your beam if that is something you are looking to do. That question has been addressed on this forum already so please search this forum for relevant answers.

    Regards,
    Kyle
  • 0 in reply to Kyle Cousino
    Intellectual 470 points
    Hello Kyle,

    Thank you for the answer. But then how in SRR demo two different FOV's are used in SRR configuration and in USSR configuration ?

    Regards,
    Neil
  • 0 in reply to Neil29
    TI__Mastermind 24955 points
    Neil,

    I think you might be getting terminology confused here.

    Yes, it is true that the SRR demo has two different chirp configurations, one for SRR and another for USRR. But the difference there is that we are implementing different chirps. No change is made to the Field of View.

    The chirp configuration for USRR is constructed to detect small changes and so this chirp leverages the entire 4 GHz bandwidth of the device to provide the greatest range resolution.

    For the SRR chirp configuration, we are concerned about maximizing range and velocity resolution. The trade off is range resolution, which is less of a concern when were are detecting objects 80-100 meters away.

    I hope this post clears up any confusion you may be having.

    Regards,
    Kyle
  • 0 in reply to Kyle Cousino
    Intellectual 470 points

    Hello Kyle, 

    Thank you for your explanatory answer. In one of the slide from Texas instruments it was mentioned about having different FOV for SRR and USRR. That's why it confused me.

    Please see the attached image. It is slide from Automotive and industrial mmWave sensor presentation.

    Or is it possible to use just total 60° of FOV instead of 120° and how that could be done?

    regards,

    Neil

  • 0 in reply to Neil29
    TI__Mastermind 24955 points
    Neil,

    This comes from using different antenna patterns on the AWR1642. The FOV of 120 degrees comes from using our standard patch antenna found on the AWR1642BOOST EVM. The FOV of 160 degress comes from using the single path, low gain, wide field-of-view antenna found on the AWR1642BOOST-ODS EVM.

    It is the same mmwave device, AWR1642, but with two different antenna configurations that result in two different FOVs.

    Regards,
    Kyle