STACKED DUAL FREQUENCY PATCH ANTENNA FOR WiMAX

Abstract

The aim of this project is to design a dual frequency microstrip patch antenna with stacked configuration in IE3D software. RT-DUROID 5880 is used as a substrate for this microstrip design. These rectangular stacked patches are excited using coaxial probe feed. The technology of mobile and wireless communication is rising at very rapid rate covering many technical areas. Worldwide Interoperability for Microwave Access (WiMax) technology is one of the most rapidly growing areas in the modern wireless communication. This provided users the mobility to shift around within a wide coverage area and even then to be connected to the network. It provides greatly increased independence and elasticity. Among wireless devices antenna is fairly a significant component. So, there is endlessly increasing necessities of capable and high performance antenna. The features of antenna which every technology requires are light weight, small in size and low cost etc. Other important desired properties of antenna are bandwidth and return loss. Next Generation devices have also more than one application embedded in single device so antenna supporting more than one band is required and multiband operation of antenna is another challenge. The designed antennas resonate at two frequencies. 3.4 GHz and 5.6 GHz. The Bandwidth is also good enough to a sufficient level by introducing slots in the patches along with better return loss. The thesis provides a detailed study of how to design a probe-fed dual frequency microstrip patch antenna using IE3D software. Various parameters, for example the S Parameters, two dimensional and three dimensional 5 radiation patterns, gain, directivity and efficiency of the designed antenna are obtained from IE3D Momentum.