Modelling of Multiband Patch Antenna Based on I Shaped Slots on DGS for Wireless Applications

Abstract

This paper presents the modelling of multiband micro strip patch antenna resonates between 2.3719GHz to 8GHz frequencies for WLAN & C-a band that comes under the radar communications applications. The proposed model design by using parasitic elements surrounded on square patch, etched with I-slots on the top of the patches well as on ground plane supported by low cast FR4 substrate, it is fed 50Ω micro strip to excite antenna. The parameters of an I-slot are optimized to achieve a multiband frequency of 2.371GHz, 4.5176GHz, 4.6583GHz, 5.1509GHz, 6.5578GHz, 7.0503GHz, & 7.8241GHz respectively. The simulated results show that the antenna has a maximum bandwidth of 6.023% bandwidth of having VSWR ≤ 2 as compared to the conventional antenna. Also, the antenna has a stable radiation pattern at all desired frequencies. The proposed model was designed and optimized by assigning variables to each component of the model. The patch antennas were simulated using HFSS.