O Ptimization of Cmos 0 . 18 Μ M L Ow N Oise a Mplifier Using Nsga - Ii for Uwb a Pplications

A design and optimization of 3-5 GHz single ended Radio Frequency (RF) Low Noise Amplifier (LNA) for ultra-wide-band (UWB) applications using standard UMC 0.18 μm CMOS technology is reported. Designing of RF circuit components is a challenging job, since even after performing lengthy calculations and finding parameter values it is less guarantee that the design performs as expected. In view of this the optimization tool; Elitist Non-Dominated Sorting Genetic Algorithm (NSGA-II); has been employed to get the optimized starting values of components in the proposed LNA design. The obtained NSGA-II parameters were simulated using Cadence SpectreRF simulator. The designed Low Noise Amplifier achieves a power gain of 22 dB and a minimum Noise Figure of 3 dB is achieved. It dissipates 12.5 mW of power out of 1.8 V supply.