A Novel Planar Elliptical Dipole Antenna for Ultra-Wideband Application

摘要

The printed dipole antenna has been investigated to be an effective radiator for ultra-wideband (UWB) communication and radar systems. In order to broaden the impedance bandwidth of the normal planar elliptical dipole antenna, a novel planar elliptical dipole antenna, designed by means of loading balun transformer and slotting on elliptical dipole elements, is proposed. The simulation results show that the return loss of the modified antenna has been almost less than -10 dB in the frequency from 2.2 GHz to 13 GHz. Compared with the normal elliptical dipole antenna, the simulated results demonstrate that the modified elliptical dipole antenna has better directional characteristics and gain performance.