“…Through the years, different types of antennas have been developed to follow the increasing demand in numerous applications of wireless technologies. Some notable works for Sub-6 GHz and WiMAX applications are introduced in [ 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. In [ 13 ], a circular shaped planner antenna is discussed for Sub-6 GHz wireless applications.…”