Frequency modulated continuous wave (FMCW) radar sensors are widely utilized for security checks, car-collision avoidances, vital signs of people, and tiny movements [1]-[5]. The 4D mm-wave radar needs large phased-array elements to realize accurate detecting. Range resolution is determined by the bandwidth (BW) of the transceiver (TRX). Moreover, it is better to design sensing and communication functions into the system simultaneously. This paper presents a 140GHz phased-array FMCW-FSK chipsets in 65nm bulk CMOS supporting a 16GHz BW with a custom horn antenna package. Based on the tile structures of the TRX, our system can be scaled up to a large size array for the 4D phased-array radar.