In this paper, Hybrid Particle Swarm-Taguchi Optimization (HPSTO) is developed and pattern synthesis of a linear antenna array based on HPSTO is presented. HPSTO uses Taguchi Algorithm (TA) and Particle Swarm Optimization (PSO) in order to obtain desired side lobe level and half power beamwidth. The results obtained by TA, PSO and HPSTO are compared. The results show that HPSTO is much better than TA and PSO. Results of HPSTO are also compared with the results obtained by High Frequency Structural Simulator (HFSS).