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WEBENCH® Tools/AWR1843BOOST: How to use mmwave studio to programe awr1843 generate a linear-stepped frequency chirp ramps?

user6248768
Prodigy 60 points
Part Number: AWR1843BOOST
Other Parts Discussed in Thread: AWR1843

Tool/software: WEBENCH® Design Tools

Hi,

    I would like to generate a linear-stepped frequency chirp ramps, which means all the parameters in like 512 chirps is the same, except only the start frequency have a linear step (offset) from one by one. How can I generate it fast, not to program the whole 512 chirps one by one?

Thanks!

  • 0
    TI__Guru*** 147964 points

    Hi,

    You would have to use a LUA script in order to program all the 512 chirps.

    The profile and chirp memories are as described in this snapshot. There are 4 Profile Memories and 512 Chirp Memories.

    The START_FREQ_VAR field in the chirp config could be used to program the chirps

    Thank you

    Cesar

  • 0
    TI__Guru 69960 points

    Hi,

    mmWave sensor uses FMCW scheme where it uses frequency slope to form a frequency ramp which is called a chirp and a combination of multiple chirps forms a frame.

    Linear-stepped frequency ramp is possible with AWR device but to generate the next step of frequency there will be a delay between each next frequency step due to idle time required between each chirps.

    With AWR1843 you need to configure each of chirp index with incremental startFreq dither value, effectively that requires to program one by one program to each 512 chirps. But that would be one time job.

    Regards,

    Jitendra