In this article, implementing an ultra wide band (UWB) d-formed antenna with minimized dimension has been proposed. The proposed antenna is fabricated at a height of 0.8mm from the ground with 1.6GHz bandwidth in measure ment, which corresponding to 57.14% practical bandwidth. With designing the d-shaped structures by applying the standard printed planar manufacturing methods, implement the structuree with proper number of the unit cells and employing the spiral innductors that perform role of the shunt inductances, the structure size is reduced and as well as the antenna bandwidth, effective aperture, gains and
efficiencies have been increased. The antenna size is 15 5 0.8 mm3 and at the resonance frequency fr=2.8GHzz the measured radiation gain and efficiency are 1.9dBi and 63%, respectively