A Novel Ultra Wide-Band Antenna for the Array with Shaped Beam Radiation Pattern

In this paper, a linear Ultra-Wideband (UWB) antenna array with the shaped beam radiation pattern is studied for wireless communication and target detecting applications, respectively, operating in the frequency band of 0.8-4.18GHz. The Array consists of 16 Ultra-Wide Band Antenna Elements with an elliptical radiator and a U-shaped slot on the Ground for bandwidth (BW) enhancement, in size of 104.9×104.9 mm². The return loss of the antenna in the whole frequency band is less than -10 dB. In addition, the synthesis methods of the shaped beam radiation patterns are based on Woodward-Lawson superposition principle, and modified-Taylor method for controlling the shaped beam's side lobe level (SLL)beam. The antenna E-plane (2D) radiation pattern shows agreement to array design with shaped beam radiation pattern. Also, the fidelity factor of the antenna element is studied.