Pattern Synthesis of Large Numbered Beam-steered Linear Array Using Restricted Search Particle Swarm Optimization

Present article investigates pattern synthesis of large number beam-steered linear array. Multiple objectives of side lobe level reduction and beam-width narrowing have been considered as pattern synthesis objectives. Excitation amplitude and uniform inter-element spacing have been considered as design parameters to be optimized. Optimum values of the design parameters have been obtained using restricted search particle swarm optimization. Effectiveness of the optimization algorithm has been illustrated using design instances of 48 and 51 elements linear array. Further superiority of restricted search particle swarm optimization over conventional particle swarm optimization has been established through comparison.