Abstract
With the increasing need for high through puts and the scarcity of available frequency, we propose in the research paper new solutions that meet these requirements. Ultra Wide Band (UWB) technology seems a very promising solution. we developed a new small circular modified Microstrip antenna design to lift the bandwidth lock while maintaining a valued performance properties quality. This new antenna consists of a circular microstrip antenna with ring slot inscribed in a patch resonator and a modified partial ground plane with slots to form a single wide bandwidth. Indeed, we studied the performance of a patch antenna made of FR4epoxy substrates (20x20x1.57). The bandwidths range from [3.6 GHz; 4.9 GHz] for a width of 1.3 GHz and a band of [9.7 GHz; 26.7 GHz] of 17 GHz and for frequencies above 27.9 GHz the bandwidth is of the order of 7.2 GHz. Antenna various simulations performance are carried out and obtained tests results are validated with requirements agreement.