Abstract:In response to the new needs of dual-use airports for radio antennas with different polarizations, an omnidirectional wideband multi-polarization antenna is introduced in this paper. The antenna is composed of a plurality of tilted antenna arrays, with broadband, multi-polarization and omni-directional radiation characteristics. The paper analyzes the influence of different tilt angles on the horizontal polarization gain and vertical polarization gain of the H plane,the simulation results show that, the antenna has good omnidirectional radiation characteristics under different polarization gain ratios.