Miniaturized omnidirectional antenna for UHF (Ultra High Frequency) band

The invention discloses a miniaturized omnidirectional antenna for a UHF (Ultra High Frequency) band. The miniaturized omnidirectional antenna comprises a dipole gradient radiator, a printed board loading body made of a light and thin dielectric material and a standard coaxial feed, the realization mode of all antenna bodies is a multi-layer printed board, the first layer is a dipole gradient radiator, and the number of the dipole gradient radiator is one; the second layer is a plurality of printed board loading bodies made of light and thin dielectric materials; the standard coaxial feed is located in an intermediate layer between a first layer and a second layer thereof. In addition to satisfying a low full-band standing wave characteristic, the antenna also has an excellent vertical plane and horizontal plane directional diagram. The antenna has the advantages of being compact in structure, high in performance, easy to manufacture, convenient to install and use and the like. 本发明公开了一种用于UHF频段的小型化全向天线，偶极子渐变辐射