Triple frequency G-shape MIMO antenna for wireless applications

Abstract

A compact Triple frequency MIMO (Multiple Input multiple Output) antenna is indispensable in modern wireless applications. This paper proposed a Triple frequency micro strip patch antenna for military (X Band) applications in wireless communications. The antenna is designed on FR-4 (Flame Retardant-4) epoxy material with dielectric constant 4.3. The Micro strip patch antenna is designed over a substrate size of 70×70 mm2. The antenna consists of a micro strip feed line and G shaped patch antenna with partially stepped ground (PSG). The proposed antenna covers Wi-Max, WLAN and X band applications. In order to enhance the narrow bandwidth and gain, we are using Partially Stepped Ground (PSG). PSG is also used to conquer higher order harmonics and the consequences of mutual coupling between radiating elements are reduced by PSG. The proposed antenna structure performs at three different frequencies which extend over distinct communication frequency ranges. The Ansoft HFSS (High Frequency Structure Simulator) Software is used to inspect the results. The parameters of designed antenna exhibit the results like Return loss, VSWR, Radiation pattern, Gain, Directivity and surface current distribution that are optimized within the band of operation.