Low return loss circular microstrip patch antenna at 5.8GHz for wide-band applications

The growth of wireless and mobile communication has necessitated the development of efficient antennas with low return loss and wider bandwidth. Under this scenario, paper focuses on an efficient design of circular microstrip antenna at 5.8GHz for wide-band applications. In the design circular patch is mounted on RT/Duroid 5880 glass microfiber reinforced PTFE composite substrate material. A circular slot is etched on the circular patch to provide wide-band operation. Antenna designs are simulated and analyzed by finite element method (FEM) based structural simulator (HFSS™ simulator software). The antenna is designed to operate in C band with low return loss, high bandwidth and desirable voltage standing wave ratio (VSWR). Results of the proposed antenna structure shows a low return loss of -43db with a wider bandwidth of 270MHz and optimum VSWR.