Null Steering in Failed Antenna Array
Creation of nulls in specified directions is desirable in order to reduce the effect of interfering signals. But in large antenna arrays there possibility of getting a fault from some of the radiating elements can not be denied. In such a situation, the pattern of the array get distorted mostly with an increasing sidelobe level and removable of the null from its desired position. In this paper a method using Particle Swarm Optimization(PSO) is developed to maintain the null position of the failed antenna array.