Miniaturization and bandwidth enhancement of a wideband slotted microstrip patch antenna

In this paper, a novel design concept of microstrip patch antenna(MPA) has been proposed. This antenna is coaxially fed and is reduced in size and enhanced in bandwidth. Analysis has been done using IE3D simulator. The antenna is designed using FR4 substrate of thickness 1.6mm and dielectric constant of 4.4. This paper demonstrates increased −10 dB impedance bandwidths of 500 MHz (3.2–3.6 GHz), 400 MHz (4.4–4.8GHz), and 550 MHz (5.1–5.6 GHz). Thus it is suitable to work for most of WLAN and WiMAX bands in UWB system. To obtain enhanced bandwidths, some structural changes have been made in design i.e. insertion of slots and slits in both radiating patch and ground plane. Result shows that this antenna is having a return loss of less than −10dB for entire operating bandwidth. Good impedance matching over the entire range. Other simulated results such as efficiency, return loss and gain are also inquired and are having optimum values.