In this paper, a new design of Microstrip antenna has been proposed. An E- shaped Microstrip Antenna has been designed and designed structure is simulated using Ansoft HFSSTM 11.1 software. Low volume and low profile configuration, easily mounted, light weight, low fabrication costs are the advantages of this antenna. Designed antenna can be operated in dual frequencies such as 5.1GHz and 7.5GHz with return loss of -22db and -12db respectively. Maximum achieved gain of the designed antenna is 11.5.