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AWR1642: Operation with DCA1000

ArTzy
Genius 17645 points
Part Number: AWR1642
Other Parts Discussed in Thread: AWR1843

Hi Experts,

Seeking your assistance on the following queries from customer about the AWR1642:

[1] What degree of flexibility exists in the chirps? Can I generate downchirps as well as upchirps? Can I interleave them? Can I vary the slopes of the chirps?
[2] Can I make the chirps nonlinear by inputting my own function? Is there a place for such an unusual function?
[3] Is the antenna array fixed or can I somehow change the phases on the antennas? Essentially, can I change the beam forming? Can I steer the antenna beam?

Thanks ahead for your detailed response.

Regards,
Archie A.

  • +1
    TI__Guru*** 149124 points
    ArTzy said:
    [1] What degree of flexibility exists in the chirps? Can I generate downchirps as well as upchirps? Can I interleave them? Can I vary the slopes of the chirps?

    Hi,

    Please see this document for chirp generation

    https://www.ti.com/lit/an/swra553a/swra553a.pdf

    There is some flexibility but there are also some limitations.

    Please see Section 6 that discusses Bursts.

    ArTzy said:
    [2] Can I make the chirps nonlinear by inputting my own function? Is there a place for such an unusual function?

    This is not possible

    ArTzy said:
    [3] Is the antenna array fixed or can I somehow change the phases on the antennas? Essentially, can I change the beam forming? Can I steer the antenna beam?

    With AWR1642 it is possible to shift the phase by 180deg.

    We have another device, AWR1843 that supports a 6-bit phase shifter for each TX. So it is possible to shift the phase in 360/64 = 5.625deg increments.

    Thank you

    Cesar

  • 0 in reply to Cesar
    TI__Genius 17645 points

    Thanks, Cesar.

    [1] I understand that I will get streaming data to the PC. How can I save this data into files for later analysis?

    [2] I received various cables with the two devices, but I don't see the 60 pin cable. Should that have been included?

    Regards,
    Archie A.

  • +1 in reply to ArTzy
    TI__Guru*** 149124 points
    ArTzy said:
    [1] I understand that I will get streaming data to the PC. How can I save this data into files for later analysis?

    The data will be saved to a file automatically.

    Please see "Section 22 Radar Post Processing"

    C:\ti\mmwave_studio_03_00_00_14\docs\mmwave_studio_user_guide.pdf

    ArTzy said:
    [2] I received various cables with the two devices, but I don't see the 60 pin cable. Should that have been included?

    Based on this page the Samtec cable should be included.

    https://www.ti.com/tool/DCA1000EVM

    Thank you

    Cesar

  • 0 in reply to Cesar
    TI__Genius 17645 points

    Thanks Cesar,

    In addition, is the baseband data which streams out complex (I & Q) or only real?

    Regards,
    Archie A.

  • 0 in reply to ArTzy
    TI__Guru*** 149124 points

    The data format is configurable.

    For complex configuration, I,Q data is saved

    thank you

    Cesar