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AWR1843BOOST: AWR1843

Neeraj Pandey
Intellectual 315 points
Part Number: AWR1843BOOST

Hi 

I have an AWR 1843 and DCA 1000. Using the DCA 1000, I capture the ADC samples. Then using the Matlab script given in the TI document, I have converted this adc_data.bin file to the adc_data.mat file.

In this mat file, I have complex numbers at every position. Now for further processing, I have divided these samples according to my chirp configuration.  My questions are: 

1. All the complex numbers are received voltages or powers? what is the unit of this (mV or volts) or (mW or W)

2. When I have treated these as voltage (Volts). And doing the FFT and plotting the range plots, the amplitude at Y-axis is  15 dB. How can it be greater than 0 dB? Note: The range of the target is correct; only the amplitude is not correct.

3. What it needs to do for calibrating the amplitude to the correct value?

4. What is the noise floor of this device?

  • 0
    TI__Guru*** 138359 points

    Hi,

    You can measure the noise floor of the device by pointing the device to the sky and capturing the data.

    For more information about the units of the raw data please use google site search to find other similar thread on this forum as follows:

    site e2e.ti.com raw data unit

    The absolute value of the amplitude is not important. What is important is the relative value with respect to the noise floor.

    Thank you

    Cesar

  • 0 in reply to Cesar
    Intellectual 315 points

    Hi Cesar

    Thanks for your reply. The noise floor question I am satisfied with the answer. But for the amplitude question, I want to know the received power when transmitting the 12dBm power in my work. And I didn't find any thread addressing the same question. Would you please suggest a few? 

    I am not able to convert correctly—the ADC samples to power. 

  • 0 in reply to Neeraj Pandey
    TI__Guru*** 138359 points

    Could you please try to google search "site e2e.ti.com awr received power"?

    Are any of the threads useful to you?

    I see a lot of similar threads

    thank you

    Cesar