Now-a-days, microstrip antennas are most popular due to its smart features such as low profile, low cost, light weight, ease of fabrication and compatibility with microwave circuits. In this paper, the design and analysis of microstrip patch antenna with scorpion shape for the IEEE 801.11b applications is presented. The proposed microstrip antenna at frequency 2.90GHz is designed and simulated using the IE3D software. The effects of different parameters like return loss, radiation pattern are studied. The simulated result shows that the proposed antenna presents dual band width of 50% and 9% which is suitable for WLAN application.