This paper describes the development of a Yagi-Uda antenna, modeled to be used in point-to-point links. The antenna was designed to operate at the 5.8 GHz ISM band (5725 to 5850 MHz). The design and optimization procedure is described by applying genetic algorithms (GA) with the HFSS software. All scheme elements have a diameter of 1/8 inch (about 3.17 mm). Initial design and optimization of a folded dipole was made, then the directors (ten in total) and a reflector were added. The spacing of the elements remains constant, for 0.06λ, 0.1λ, 0.2λ, 0.3λ and 0.4λ, comparisons were made for the estimated gain.