Ultra-wideband dielectric resonator antennas

Two novel UWB dielectric resonator antennas (DRA) are designed for broadside radiation and Omni-directional radiation. The dielectric resonator (DR) is mounted on a vertical ground plane edge, which is printed on a thin dielectric substrate. The DR is inserted it in the dielectric substrate by cutting it to fit the dielectric resonator. For the broadside type, the deformation of the radiation patterns in the E-plane that usually occur with these types of antennas has been improved. For the Omni-directional type the cross-polarization level is reduced and the Omni-directionality of the radiation patterns is improved at the upper limit of the UWB. In addition, use of DR improve the radiation efficiency and reduce the antenna size.