Rahmani, S. AzzazBoukli-Hacene, N2013-03-192013-03-192012-011694-0814https://dspace.univ-tlemcen.dz/handle/112/1656In 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 antennawidebandconcentric patchbandwidthow impedanceArticle