Design of an 85–95-GHz differential amplifier in 28-nm CMOS FDSOI

Abstract

This paper presents the design and measurement results of a W-band two-stage differential amplifier using transformers in 28-nm CMOS FDSOI. At 90 GHz, the amplifier achieves 13.8 dB gain, and the input and output return loss are -8.0 dB and -11 dB, repectively. The amplifier obtains +5 dBm saturated output power and 1-dB output compression point of 0 dBm at the centre frequency. From 85 to 95 GHz, the gain is better than 12.3 dB and the average noise figure (NF) is 8 dB. The design consumes 37.5 mW power from a 1-V supply and the active area of the design is 0.017 mm2.