A Compact 55–66 GHz Single‐Chip FMCW Transceiver Featuring 12‐dBm Psat and >11‐GHz Tuning Range in 65‐nm SOI CMOS

This paper presents a fully‐integrated frequency‐modulated continuous‐wave (FMCW) transceiver chip operating from 55–66 GHz, fabricated in a 65 nm silicon‐on‐insulator (SOI) CMOS process. The chip incorporates a wide‐tuning‐range voltage‐controlled oscillator (VCO) with four digitally selectable states, a driver amplifier, a power amplifier (PA), a low‐noise amplifier and passive mixers, providing a compact solution for high‐resolution millimetre‐wave radar and short‐range communication systems. An innovative hybrid digital‐analogue VCO tuning architecture, combined with co‐optimized transmit/receive front‐end design, enables robust noise and linearity performance within a small core area. Measurement results demonstrate a transmitter saturated output power of 12 dBm and an output return loss better than 8 dB across the band. The receiver achieves 10 dB of gain, a 9.8 dB noise figure and an input 1 dB compression point of −18 dBm. The integrated VCO exhibits a phase noise better than −87.71 dBc/Hz at 1 MHz offset.This paper presents a fully‐integrated FMCW transceiver chip operating from 55–66 GHz, fabricated in a 65 nm SOI CMOS process. The chip incorporates a wide‐tuning‐range VCO with four digitally selectable states, a driver amplifier, a PA, a low‐noise amplifier and passive mixers, providing a compact solution for high‐resolution millimetre‐wave radar and short‐range communication systems. An innovative hybrid digital‐analogue VCO tuning architecture, combined with co‐optimized transmit/receive front‐end design, enables robust noise and linearity performance within a small core area. Measurement results demonstrate a transmitter saturated output power of 12 dBm and an output return loss better than 8 dB across the band. The receiver achieves 10 dB of gain, a 9.8 dB noise figure and an input 1 dB compression point of −18 dBm. The integrated VCO exhibits a phase noise better than −87.71 dBc/Hz at 1 MHz offset.