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TIDEP-01012: What's the time required for operation mode from MIMO to Beamforming

user796308
Prodigy 120 points
Part Number: TIDEP-01012
Other Parts Discussed in Thread: AWR2243

HI ti erperts:

For cascade image radar, I want to use MIMO  to cover near rang,use Beamforming to cover rang;

So i want to know the Minimum delay from MIMO  mode to Beamforming mode ,and the Minimum delay from Beamforming mode to MIMO  mode  ?

Thanks,

  • 0
    TI__Guru 69960 points

    Hello,

    You can configure the device for these two features (MIMO & BF) for alternate frames. So time difference b/w these features to run is frame period configured.

    Beam forming is basically generated using device Tx phase shifter property. And it is capable of setting the phase on each Tx for even at every chirp.

    Regards,

    Jitendra

  • 0 in reply to Jitendra Gupta
    Prodigy 120 points

    HI , Thanks for your reply!

    can you share me the reference material which introduce response time of  TX switch、Phase shifter、FMCW Ramp Generator for AWR2243 ?

    For example, how long time  AWR2243 needed to generate the Stable FMCW  signal from current mode to other mode for FMCW Ramp Generator?

  • 0 in reply to user796308
    TI__Guru 69960 points

    You can refer the mmwave DFP example for reference where is configure the device for different Tx Phase.

    C:\ti\mmwave_dfp_02_01_05_03\ti\example\mmWaveLink_SingleChip_Example

    In AWR2243 device each FMCW ramp is called chirp and many of same/dissimilar kind of chirps forms a frame. These chirps duration can be as small as few microseconds and so all the features related to this chirp (phase-shifter, Tx switch, FMCW ramp etc.) will be applied within that time.

    There are few training videos on the mmwave sensor basic which will help you gain more insight into mmwave sensor features-

    https://training.ti.com/mmwave-training-series

    https://training.ti.com/build-cascaded-radar-using-tis-mmwave-sensors

    Regards,

    Jitendra