An ultra-wideband printed monopole aerial

The invention relates to an ultra-wideband printed monopole sub-antenna of the wireless communication field. The invention includes: a radiating element, a coplanar waveguide and a dielectric slab, wherein, the coplanar waveguide is composed of a left and a right coplanar waveguide ground plates and a central coplanar waveguide excitation line, the radiating element is arranged at the upper surface of the symmetrical centers of the two coplanar waveguide ground plates and is positioned on the same surface of the dielectric slab with the coplanar waveguide, and the radiating element is also positioned at the symmetrical position of a central shaft of the dielectric slab. The antenna has the ultra-wideband property, the phase of the transfer function is linear similarly, the amplitude is flat, the structure is simple, and the invention is easy to realize and can be applied in UWB, WLAN and other various wireless communication systems.