Design of Dome Shaped Slot Antenna for Ultra Wide Band Application

Abstract

This is a presentation of microstrip-fed monopole with a compact dome-shaped wide-slot antenna for ultra wide-band application. 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 35í— 36.5í—1. 6mm3.Simulation and optimization carried out using CADFEKO suite 7.0. Dome-shaped slot provides a wide usable bandwidth up to 129% from 2.718GHz to 12.6GHz. The average efficiency is 75%, and stable VSWR (1.0-2.0) achieve over entire range in simulated results. The radiation pattern of E-plane and H-plane are directional and omnidirectional respectively with a stable gain.