High gain 2.4 GHz CMOS low noise amplifier for Wireless Sensor Network Applications

This paper presents high gain CMOS low noise amplifier (LNA) at 2.4 GHz for Wireless Sensor Network Applications. The proposed LNA is developed in 0.13-μm CMOS process. The cascode topology with source degeneration inductor is employed. The high gain is obtained by using common-source (CS) amplifier at the second stage. The simulation results show that the proposed LNA achieves gain of 23.9 dB, input return loss (S11) of -26.9 dB and output return loss (S22) of -20.6 dB. The noise figure (NF) and the input third order intercept point (IIP3) are 5.6 dB and -11.1 dBm, respectively. The total power consumption is 8.1 mW at 1.2 V supply voltage with the chip size is 0.64 mm² including bond pads.