A 40GHz to 67GHz bandwidth 23dB gain 5.8dB maximum NF mm-Wave LNA in 28nm CMOS

Wide-band receivers at mm-waves enable several Gbit/s communications with simple modulation. This work presents the design of an ultra wide-band LNA in 28nm CMOS. Common source stages are stacked in a current-sharing configuration and coupled through third-order L-C band-pass networks. In addition, the stages are stagger-tuned to maximize bandwidth and gain flatness. Realized prototypes show 23dB peak gain over 40–67GHz with 5.8dB maximum in-band noise figure and 25.3mW power consumption.