To meet the requirements of UAV ground TT&C station to achieve far-distance and large-elevation span omnidirectional communication with the single-antenna operating mode, a wideband high-gain omnidirectional beamforming array antenna is designed. The antenna adopts four broadband printed dipole units to form a coaxial array, by making use of parallel and coupling feeding method, the gain of the antenna is larger than 6 dB within 28.9% of the relative working bandwidth. At the same time, the genetic optimization algorithm is used for the beamforming of elevation plane in 1.65 GHz~1.75 GHz, realizing the first null no less than –8 dB, which achieving the link’s wide-angle coverage.