Title :
Compact antipodal Vivaldi antenna for UWB applications
Author :
Pandey, G.K. ; Verma, H. ; Meshram, M.K.
Author_Institution :
Dept. of Electron. Eng., IIT (BHU), Varanasi, India
Abstract :
A novel compact end-fire antipodal Vivaldi antenna is proposed for ultra-wideband (UWB) applications such as in radars, microwave imaging and in high data rate wireless systems. To make the antenna compact, a bending feed line structure and sinusoidal modulated Gaussian tapered slot is used. The proposed antenna has a reflection coefficient of less than -10 dB from 2 GHz to more than 12 GHz (more than 166% fractional bandwidth). The radiation characteristics show an end-fire radiation pattern in the operating frequency band with peak realised gain values in the range of 1.5-5.2 dBi. Time domain analysis shows that the antenna has good pulse handling capability with a high system fidelity factor.
Keywords :
Gaussian processes; antenna feeds; antenna radiation patterns; modulation; slot antennas; time-domain analysis; ultra wideband antennas; AVA; SM-GTS; UWB application; bending feed line structure; compact end-fire antipodal Vivaldi antenna; end-fire radiation pattern; high data rate wireless system; high system fidelity factor; microwave imaging; pulse handling capability; radar; sinusoidal modulated Gaussian tapered slot; time domain analysis; ultrawideband application;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2014.3540
