BANDWIDTH ENHANCEMENT OF RECTANGULAR MICROSTRIP ANTENNA USING SLOTS AND DEFECTIVE GROUND STRUCTURE

B. Suryakanth, Sukanya Kulkarni

Abstract: This paper presents the simulation investigations carried out for enhancing the bandwidth of Rectangular Microstrip Antenna by using slots and defective ground structure. By incorporating two I-type slots on the conventional patch, the antenna resonates for single band with a bandwidth of 3.522%. Adding four I-type slots on the patch the bandwidth is enhanced to 3.613%. Further by incorporating defective ground structures (DGS) in the ground plane of conventional microstrip antenna, the bandwidth has been enhanced from 4.964% to 7.461%. The Glass-Epoxy with relative permittivity ???? = 4.2 is used as substrate material. The proposed antenna may find applications in the communication systems operating at C-band (4GHz-8GHz). Design concept of the proposed antennas is described and their simulation results are discussed. HFSS software is used for the simulation.

Keywords: Microstrip; Slot; Bandwidth; Defective Ground Structure;

DOI: https://doi.org/10.15623/ijret.2016.0505095