A low-power, low-noise and high linearity 60 GHz wideband CMOS low-noise amplifier for wireless personal area network (WPAN) systems

Abstract

A low power and low noise figure (NF) 60 GHz wideband low-noise amplifier (LNA) with excellent phase linearity for wireless personal local network (WPAN) systems using standard 90 nm CMOS technology is reported. To achieve sufficient power gain (S21) and reverse isolation (S12), the LNA comprises a common-source (CS) stage followed by a cascode stage and a CS stage. The LNA consumes 14.1 mW, achieving S11 better than ?10 dB for frequencies 55.1---59.5 GHz, S22 better than ?10 dB for frequencies 55.1---59.4 GHz, S12 better than ?42.6 dB for frequencies 50---64 GHz, and group delay variation smaller than ±13.25 ps for frequencies 50.4---63 GHz. Additionally, high and flat S21 of 9.9 ± 1.5 dB is achieved for frequencies 50.4---62.9 GHz, which means the corresponding 3-dB bandwidth is 12.5 GHz. Furthermore, the LNA achieves minimum NF of 3.88 dB at 55.5 GHz and NF of 4.73 ± 0.85 dB for frequencies 50---63.5 GHz, one of the best NF results ever reported for a 60 GHz CMOS LNA.