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.
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