A 60 GHz SiGe BiCMOS monostatic transceiver for radar applications

This paper presents a 60 GHz monostatic transceiver system for the use in FMCW radar applications. The IC occupies a very compact area of 1.42×0.72 mm
²
and is fabricated in a 250/340 GHz f
_T
/f
_max
of 0.13μm SiGe BiCMOS technology with a total current consumption of 190 mA from a single supply of 3.3 V. The fully differential transceiver employs an I/Q receiver with 17 dB conversion gain and -20 dBm input 1dB compression point and a transmitter with 8.2 dBm output power with a 3-bit push-push voltage-controlled oscillator integrated to a divide-by-32 block for external PLL operations. The single antenna output functionality is guaranteed by the tunable high isolation coupler placed in front of transmit and receive channels. Additionally, two power detectors monitoring transmitted and reflected powers on TX channel through a branch-line-coupler are designed as built-in-self-test blocks. The successful real-time measurement results indicate that the proposed fully integrated monostatic transceiver system is able to detect obstacles above 90m and is well suited for 60 GHz radar applications.