Omnidirection Vertically Polarized Antenna on Unmanned Aerial Vehicle

A wideband omnidirectional vertically polarized antenna is proposed which mounted on an unmanned aerial vehicle (UAV). The antenna adopts the structure of the printed dipole array back to back microstrip patches which fed by coaxial cable. The antenna is loaded by two shorted pin and realized characteristics of low profile and vertical polarization. The patch radiators and feed lines on one side of the ground plane are reversed in positions compared to the other side, and hence with radiators on both sides an azimuthal omnidirectional pattern is formed. The antenna realizes omnidirectional radiation in the horizontal plane. The antenna has a measured $\vert \mathbf{S}_{11}\vert bandwidth of 3.9-5.0 GHz (24.7%). The prototype antenna can be widely used in the field of communication antenna on unmanned aerial vehicle for its advantages of simple structure, small wind resistance, omnidirectional patterns, and low profile.