In this paper design of a broadband printed microstrip patch antennasuitable for wireless communication (WLAN/WiMAX) applications is presented. The antenna occupies small size of 50×40×1.6〖mm〗^3. Parallel slots and corner notch are employed in a rectangular patch to achieve broadband characteristics.Two parasitic elementsare printedon the bottom surface of the substrate to givegood performance.The proposed antenna has return losses of -32 dB and -30.8 dB at 2.4 GHz and 3.5 GHz respectively. The bandwidth is 1.768 GHz (from 1.985 GHz- 3.753 GHz) at S11< -10 dB.The maximum gain is 2.8 dBi for 2.4 GHz and 3.3 dBi for 3.5 GHz. Thesimulated results are obtained using the software computer simulation technology CST. The designedantenna is printedat a low cost on FR-4 substrate and simple feeding using microstrip line feed.