Hi Vikram- Nice compilation. The AWR2544 uses a real-only receiver. So, you only get the magnitude value but the not phase information. I understand this simplifies receiver architecture in comparison with IQ based- In that case how would one do velocity estimation without phase information. I also see latest FMCW transceiver MMICs use real-only receiver architectures. I'm guessing different signal processing techniques.
Having IQ does have its benefits because of lower image noise fold back, and better SNR, but the increased components makes it more expensive. More info here: https://www.ti.com/lit/wp/spyy007/spyy007.pdf
Hi Vikram- Nice compilation. The AWR2544 uses a real-only receiver. So, you only get the magnitude value but the not phase information. I understand this simplifies receiver architecture in comparison with IQ based- In that case how would one do velocity estimation without phase information. I also see latest FMCW transceiver MMICs use real-only receiver architectures. I'm guessing different signal processing techniques.
Taking a DFT of a sinusoidal signal will result in the phase, without having IQ. This explains it better: https://dsp.stackexchange.com/questions/59580/understanding-the-phase-in-dft
Having IQ does have its benefits because of lower image noise fold back, and better SNR, but the increased components makes it more expensive. More info here: https://www.ti.com/lit/wp/spyy007/spyy007.pdf
Thank you.
Insightful!! :)