Presentation description of LAPC paper / poster entitled Dielectric Resonator Antenna Design For UWB Applications F. Elmegri, A. H. Al-Qaysi, C.H. See, R.A. Abd-Alhameed, C. Zebiri and P.S. Excell This presentation describes two designs for Dielectric Resonator Antennas (DRA) that are suitable for ultra wideband (UWB) communication system applications. Following the introductory part, title and summary, slide 4, 5 and 6 presented a brief introduction about the DRA. Slide 7 shows description for the first proposed antenna. This antenna is constructed by rectangular ceramic block with dimensions 6.00 mm × 9.00 mm × 6.00 mm, FR4 substrate with relative permittivity of 4.5 with (30 × 21 × 0.8 mm 3 ), feed line of 18 mm × 1.5 mm at the end a T-shaped element is used to excite the DR In slides 8, 9 and 10, a parametric study for three sensitive parameters (DR_W, DR_L and T_L) are shown to understand the reflection coefficient results as a function of the DRA geometry. Slides 11and 12 show the simulation results using two simulations software’s which are Ansoft HFSS and Semcad, S11 parameter of the proposed antenna is better than 10dB. As can be seen, the antenna is operating from 3.1 to 5.5 GHz. Slide 13 and 14 presents the simulated Far Field radiation patterns results of the proposed antenna, at two planes, i.e. E-plane (XZ- plane) and H-plane (XY-plane) for three operating frequencies, i.e. 3.1 GHz, 4.5 GHz and 5.5 GHz, which are chosen to cover the entire operating band. As can be clearly seen, the antenna exhibits consistent onmi-directional patterns across of the operating band Slide 15 shows description for the second proposed antenna which is constructed using ceramic block of εr =9.4 with cylindrical shape of dimensions 6.00 mm × 9.00 mm × 6.00 mm, FR4 substrate with relative permittivity of 4.5 with (23 × 23 × 0.8 mm 3 ), flipped L-shaped feed line of 10.5mm × 6.5mm×1.5 mm and a T-shaped slot . Slides 15-22 summarize the parametric study for seven sensitive parameters (SL, y, sw, x, wf2, lf2 and wf1) against the variations of the reflection coefficient results as a function of the DRA geometry. Slides 23 and 24 show the simulation results using CST microwave studio suit 2011. As can be seen, the antenna is operating from 6.27 to 11.69 GHz (60%) at the reflection coefficient |S11| better than - 10 dB. Slide 25 presents the simulated E-field radiation patterns of the proposed antenna at (Ø=90) and (Ø =0) for two operating frequencies, i.e. 6.77 GHz and 11.0 GHz, which shows that the proposed antenna exhibits broadside radiation.