Investigation of multiband antenna for wireless communication

In this paper, design and analysis of a rectangular microstrip patch antenna with two U-shaped slots for multi operating bands of wireless communication systems have been presented. The proposed antenna is placed on the substrate of Taconic TLY-5 dielectric material and excited by 50Ω microstrip feed line. The operating bands are centered at 1.60GHz, 2.40GHz, 4.27GHz, 5GHz, 6GHz, 8.1GHz and 9.2 GHz. In this work, GEMS Simulator is used as the software environment in order to design and analyze the performance of antenna. In addition, the return loss of the designed antenna has been analyzed by varying slot width. Based on the results and analysis, it is noticed that the antenna shows better performance when the widths of the first and second slots are 5mm and 5.8mm respectively. Moreover, the directivity, gain and 3D radiation patterns of the designed antenna are acceptable for wireless communication.