A CMOS fully-differential current-reuse LNA with gm-boosting technique

In the paper, we propose a fully-differential current-reuse LNA with g_m-boosting technique in CMOS 180 nm technology. Two amplification stages are connected in cascaded and share the same DC current. The first stage is a common-gate (CG) configuration for input and noise matching and the second stage is a common-source (CS) configuration for providing appropriate gain. Furthermore, the LNA combines with capacitor cross-coupled g_m-boosting technique to achieve low power consumption. The measured results show that the maximal power gain is 12.3 dB and noise figure is 3.6 dB. The total power consumption is as low as 1.66 mW from a supply voltage of 1.2 V. The chip size including pads is 1.01 × 0.93 mm². A significant figure-of-merit of 137.7 is achieved.