A Compact Microstrip-Fed Ultrawideband Slotted Antenna with Resonance of WiMAX Band

This is a presentation of microstrip-fed monopole with a compact dome-shaped wide-slot antenna for ultrawideband application with band notched characteristics. The rectangular radiator and dome-shaped ground plane of an antenna are etched on FR4 substrate with permittivity 4.4 and loss tangent 0.02 with an overall size of 35× 36.5×1.6mm3.For notching WiMAX inverted U-shaped slot is cut from the patch. Simulation and optimization carried out using CADFEKO suite 7.0.Dome-shaped slot provide a wide usable bandwidth from 2.718GHz to 13.5GHz. The average efficiency is 75%, and stable VSWR (1.0-2.0) achieve over entire range except WiMAX band in simulated and measured results. The radiation pattern of E-plane and H-plane are directional and omnidirectional respectively with a stable gain