A novel concept of Dielectric Resonator Antennas (DRA) is investigated. The first DRA of conical shape is investigated numerically and experimentally. The studied structure is excited by a simple slot in the ground plane. A second structure of DRA which consists of two concentrically shapes is also presented. In order to characterize both the antennas, the reflection coefficient, the radiation pattern, and the antenna gain of each proposed configuration are studied. The reasonable agreements between the measured and simulated results are observed
