In this Paper, a wideband printed monopole antenna (PMA) using defected ground structure has been proposed for S and C band applications. The conventional PMA is designed with the center frequency of 4 GHz using low-loss dielectric substrate Glass Epoxy (FR4) with dielectric constant (εr)= 4.4 and substrate thickness of 1.575mm. The band width of this PMA is enhanced by etching the two square shaped slots in the ground plane. The dimensions and the positions of the DGS slots are finalized by thorough optimization. The simulation results demonstrate more than 4.3 dBi peak gain with wide bandwidth of 5.2 GHz and ideal monopole radiations. The prototypes are fabricated and the experimental validation of the simulation results is under process
