Azzaz Rahmani, SBoukli Hacene2, N2014-07-162014-07-162012-011694-0814https://dspace.univ-tlemcen.dz/handle/112/5704In this paper, a new design technique for bandwidth enhancement of concentric microstrip annular ring slot antennas is presented. Using this technique, an Ultra-Wide-Band antenna is designed with simulated bandwidth of 111.29%.enMicrostrip antennawideband,concentric patchbandwidthlow impedanceArticle