On the Design of Fractal UWB Wide-Slot Antenna with Notch Band Characteristics

摘要

A coplanar waveguide-fed ultra-wideband (UWB) fractal wide-slot antenna with notch band characteristics is proposed. The radiation patch of proposed UWB antenna is designed using cantor set fractals by introducing triangular fractals. The bandwidth is enhanced by introducing symmetrical triangular-tapered comers at the bottom of wide slot. The proposed antenna has a size of 26 × 21 mm~2 and has operating frequency over the UWB range (2.8-10.3 GHz) except at the notch band frequency 5-6.3 GHz. The proposed cantor set of fractal wide-slot UWB antenna is designed and the performance of the antenna is verified by observing the antenna parameters such as return loss, gain, VSWR, and radiation characteristics. The results show that the designed antenna with compact size has good impedance bandwidth over the UWB range (2.8-10.3 GHz) and improved radiation characteristics with required notch band.