%0 Journal Article %T Conical Shape Antenna with Circular Slots for Ultra Wideband Applications %A Ahmed H. Al-Shaheen %J International Journal of Electronics Communication and Computer Technology %D 2012 %I Nexus2world Publication %X In this paper an ultra wideband of conical shaped with different configurations are designed and simulated.The antenna is printed on FR4 dielectric substrate of dimensions 42mm X 42 mm X 1.5 mm.conical shape using as a stub with circular slot etched on the ground plane, with microstrip CPW fed. The results shows a good bandwidth impedance below (S11< -10 dB) for the ultra wideband UWB range from 3.1-10.6 GHz. Parametric study is done to optimize these antennas to be fit with UWB wireless applications. %K UWB Antennas %K CPW %U http://www.ijecct.org/v2n1/6.pdf