Antenna design

The geometry and configuration of the proposed UWB notch antenna with the notch at 5.5 GHz is shown in the figure 1 (a) and (b). The antenna is simulated and fabricated on a FR4 epoxy substrate with the dielectric constant εr =4.4 and height h =1.6 mm. It has a circular radiating element of radius Rpatch=5.25 mm on the front surface of the rectangular substrate of dimension (LsubxWsub) 15x17 mm2. This radiating element is fed by a 50-Ω