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A ring dielectric resonator antenna (DRA) design with an air gap between the dielectric resonator and ground is presented for broadband applications. In this proposed antenna, micro strip line feeding is used for easy fabrication. This DRA is simulated using a CST microwave studio suite TM 2010. The simulated results show the wider impedance bandwidth of around 86% covering the frequency range of 3.20-7.39 GHz with much better broadside radiation characteristics. Parametric studies of the antennas with CST microwave based design data and simulated results are presented here.