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By using the concept of defect ground structure (DGS) plane, a microstrip antenna is designed for C and S Band applications. The antenna is designed on polyester substrate with operating frequency 3 GHz. Defected ground structure is used to enhance the impedance bandwidth. A meander shape is integrated on the ground plane and corners are truncated. A 50 Ω microstrip feed line which behaves like a tuning stub, is used to excite the proposed antenna. The variation in the length of tuning stub affects the reflection coefficient of the proposed antenna and hence controls the return loss level as well as improves other parameters. The simulation of proposed antenna is done on IE3D tool and measure characteristics of fabricated antenna.