ANALYSIS OF LINEAR ARRAY ANTENNA FOR SLL REDUCTION USING SMART ANTENNAS

Abstract

In this thesis proposed a very simple and powerful method for the synthesis of linear array antenna. This method reduced the desired level of side lobe level (SLL) as well as to steer the main beam at different-different angle. A new method for adaptive beam forming for a linear antenna arrays using genetic algorithm (GA) are also proposed. Genetic Algorithm is an iterative stochastic optimizer that works on the concept of survival of the population values based on the fitness value. An adaptive genetic algorithm has been used in linear array to optimize the excitation levels of the elements resulting in a radiation pattern with minimum side lobe level. These algorithm can determinate the various values of side lobe level and phase excitation for each antenna to steer the main beam in specific direction