Design of a new type of ultra wideband planar monopole antenna

A new type of planar monopole antenna with extremely wide bandwidth is introduced.Effect on performance from each part of the antenna is analyzed by simulation software.Antenna's impedance matching is improved by adopting copper clad dielectric slab with two circle holes instead of normal metal slab as the radiating element.The antenna made according to the optimized parameter reaches VSWR2 from 1.2 GHz to 3.5 GHz,which has the ultra wideband performance.The antenna has the characteristic of simple structure,easy to make,low cost of manufacture,and it has considerable practical value.