Array Geometry Optimization for Beamforming in Smart Antenna System

his paper investigates different geometries in two and three dimensions for array antenna with four elements. We study the influence of array elements location, or array geometry, in performance of maximum signal to interference beamforming algorithm and it turns out changing elements place in array antenna varies the array antenna beam. To compare antenna beam for various array geometry we considered special circumstances of one signal and two interferences. Also beam of antenna for sixteen elements array antenna in the structure of 4x4 rectangular, is the basis of the comparison, regarding to its elements number, which is much more than the number of signal and interferences. We optimized geometry of the four elements array, which is presented for minimizing signal to interference ratio under special circumstances. Furthermore, we optimized array geometry for 1000 and 10000 random conditions cumulatively using genetic algorithm. Then we considered the beam of this optimized array geometry under special circumstances