https://www.mathworks.com/help/dsp/ref/dsp.digitaldownconverter-system-object.html
The dsp.DigitalDownConverter object translates digital signal from intermediate frequency (IF) band to baseband and decimates it.
digital signalintermediate frequencydsptranslateband
https://ieeexplore.ieee.org/document/8968433/
This paper proposes a radio frequency (RF) switch-based radar system for simultaneously detecting multitarget and multidirectional vital signs. Compared with tr
intermediate frequencyvital signswitchbasedlow