Ultra wideband dielectric resonator antenna with band rejection

In this paper, primary results of a new alternative prototype based on dielectric resonator (DR) materials is proposed to develop an UWB monopole-like radiation-pattern antenna with a band stop in the range of 5.15-5.825GHz. In the proposed configuration, the hybrid-composite structure is composed of a hallow cylindrical DR placed on a microstrip ring patch that is entirely excited by a monopole antenna. The DR and the monopole antenna are considered as a hybrid-composite configuration providing multi-resonant performance while the microstrip ring is mainly served to create a notch band filter at the desired frequency bandwidth. Simulation results performed by CST Microwave Studio [11] for the proposed configuration show a promising performance over an ultra-wide frequency bandwidth. In the following sections, the design procedure of the proposed antenna is described, and then obtained results are also presented and discussed.