Bandwidth Enhancement of Rectangular Ring Antenna for On-body Communication System

In this modern mobile and wireless communication era, the demand of smaller and compact antenna has been increasing. The printed monopole antennas are popular for these applications and also applicable for body centric communication because of its low cost and process simplicity. Here the proposed antenna is a rectangular ring antenna operating at 2.45GHz. In this configuration the rectangular slot cut inside the patch resulting the ring and in this ring cut the C-shape slot. so simple and compact micro strip-fed printed monopole antenna is proposed in this design. The size of partial ground plane is 20x9mm and the dimension of substrate FR4 used is 20x40mm with thickness 1.6mm, dielectric permittivity is 4.7 and tangent loss is 0.019.The size of patch is 12x26 with ring width of 2mm and width of C-shape slot is 1mm.HFSS 13.0 is used for simulation and after he simulation it is found that the antenna operates well at 2.45GHz.The antenna covers bandwidth from 2.28GHz to 2.78GHz which is 20.40%.