A 77 GHz FMCW MIMO radar system based on 65nm CMOS cascadable 2T3R transceiver

In recent years,many studies on millimeter-wave (mm-wave)radar have been published [1-3].Compared with other traditional vision sensors like ultrasound,camera,and laser radar,mm-wave radar is more attractive owing to its low cost,high resolution,high integration,and strong robustness against bad weather.Frequency-modulated continuouswave (FMCW) radar is the most widely studied mm-wave radar because of its simple structure,easy realization,and powerful function.At present,the research of mm-wave radar mainly focuses on two frequency bands,24 GHz and77 GHz.Between them,the research on 24 GHz radar has started earlier and is more mature now.It is mainly used in car’s advanced driving assistant systems (ADAS).Com-