Enhanced Performance of Microstrip Antenna Array for the Wifi Application

In this paper, the design of WiFi antenna array at 2.4 GHz is presented. To overcome the limitations in electrical characteristics, in order to enhance impedance matching, a slot approach was first used, yielding a gain at 2.87 dBi and a return loss S11 at -17.59 dB. Further modifications are used, including chamfered edges and an additional rectangular element, resulted in an enhanced S11 at-45.17 dB and a gain at 3.06 dBi, suggesting improved radiation efficiency and impedance. After that, the 2x2 antenna array was added to boost gain even further, resulting in an S11 at -30.08 dB and a gain at 6.16 dBi. This iterative design process demonstrates the potential of combined structural refinements and array techniques to enhance the performance of proposed antenna for wireless applications.