Low Noise Amplifier is the very importance block in any receiver front end. This paper presents the design of a Low
Noise Amplifier (LNA) operating at 2.4 GHz for wearable devices for Wireless Body Area Network (WBAN) using 0.18 um
CMOS technology. The proposed circuit is a single stage low noise amplifier based on the inductive source degeneration
topology for achieving best impedance matching and stability. The cascade design of CMOS is used to achieve high gain of
22.904 dB and very low noise figure of 0.814 dB. The proposed LNAs is made to operate with supply voltage of 1.8 V. The
designed circuit and results are simulated using Advanced Design System (ADS) software by tuning some library files and LNA
parameters
