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IWR1443BOOST: Product Suggestion

Kaustubh Kulkarni
Intellectual 1040 points

Part Number: IWR1443BOOST
Other Parts Discussed in Thread: IWR1642BOOST

Hello all,

Could you help me with the following request please,

We are working on industrial safety applications and we want to employ your low cost MIMO sensor in our applications field. Accordingly, I want to buy one of the hardware either IWR1443BOOST or IWR1642BOOST and I have some questions regarding both. Personally I couldn't decide, so I will mention my application area and I hope I get a recommendation from your side.

1. I want to measure Micro-Doppler’s, so I think fast chirps and high sending rate is required as I will need large number of chirps per measurement. Moreover, a suitable maximum range is needed, so a large number of samples per chirp are also required. So, please recommend as I couldn't decide one with radar hardware accelerator and one with built in DSP and I want to decide which is most suitable for the application, given I manly program everything on the PC as a prototype. However, the most important thing for me is ((real-time)) data access and processing.

2. In the boost is everything all included in the package or I have to buy the chip and the boost alone?

3. Is the chip PC communication protocol available with the chip, so that I can develop my own interface in whatever language I want?

Thank you in advance.

  • 0
    TI__Mastermind 30405 points

    Hi Kaustubh,

    I would suggest you to plug-in your application sensing requirements such as range, range resolution, velocity and velocity resolution in the mmWave Sensing Estimator tool to see what's achievable, trade-offs and to get an idea of the bandwidth (both RF and IF) and Radar cube memory requirements.

    Going by your requirement to measure micro-Doppler, I understand the following:

    1. You need very fine velocity resolution, which in turn means a high number of chirps per frame. This means more processing and more radar cube memory (The 1642 can support twice the radar cube as compared to 1443).
    2. Micro-Doppler will generally need post processing (i.e. a higher level algorithm beyond the standard range, velocity and angle FFTs). Depending upon the applications requirements, you can use the DSP on-board the 1642 for the post processing.

    There are other considerations/trade-offs you may want to evaluate against your application requirements (again, this is not an exhaustive list but to highlight some main exploration points):

    1. Sampling rate and IF Bandwidth: While both devices support the same RF bandwidth (76-77GHz or 4GHz continuous from 77-81) the IF bandwidth on 1443 is 15Mhz (max sampling rate 18.75 Msps) as compared to 5MHz (max sampling rate 6.25 Msps) for the 1642.

    2. No. of TX antennas: While both devices have 4 RX channels, The 1642 has two TX channels as compared to 3 TX channels for the 1443. The 1642 EVM doesn't support angular resolution in the elevation direction since both TX antennas are used in the Azimuth place. The 1443 EVM supports angular resolution in both Elevation and Azimuth directions because of it's antenna design where the middle antenna is used for elevation direction. On the same lines, the number of maximum virtual RX channels on 1443 is 4x3 i.e. 12 while on the 1642 it's 4 x 2 i.e. 8. See the MIMO Radar app note for an overview of angle estimation and virtual antenna array (www.ti.com/.../swra554.pdf)


    To answer the other 2 questions:

    2. In the boost is everything all included in the package or I have to buy the chip and the boost alone?
    Both the 1443 and 1642 BOOSTPAC EVMs are self contained evaluation platforms containing the Radar Sensor, Etched Antennas, JTAG debug, power etc. The EVMs connect to PC using USB over UART which is built into the EVM. Please refer to the respective EVM user guides for more details. Depending upon your requirements (e.g. raw ADC data output on 1443) you may want connect DEVPACK and TSW1400 EVM to the EVM but the EVMs include everything for evaluation and running the basic DEMOs.

    3. Is the chip PC communication protocol available with the chip, so that I can develop my own interface in whatever language I want?
    I am not sure what protocol you plan to use but the Chip has multiple interfaces including UARTs, SPI, CAN (16xx) which can be used for control and data communication. The EVM exports object detection data (Range, Velocity etc) to the PC over UART.

    Regards
    -Nitin