%0 Journal Article %T Optimization of a LNA Using Genetic Algorithm %J Electrical and Electronic Engineering %@ 2162-8459 %D 2012 %I %R 10.5923/j.eee.20120202.07 %X In this paper an accurate method is presented for determining of the device sizes in a RF circuit based on genetic algorithm (GA). HSPICE RF simulation is used for evaluating of the fitness of the circuit specifications per every iteration of the GA. Also an example for a LNA is presented for evaluating of non-dominated sorting genetic algorithm (NSGA-II) as a method of multi objective genetic algorithm optimization. Simulation results confirm efficiency of the GA for determining of the devices sizes and optimization in a RF circuit. %K Genetic Algorithm (GA) %K LNA %K NSGA II %U http://article.sapub.org/10.5923.j.eee.20120202.07.html