A miniaturized fermi TSA with improved radiation characteristics For UWB Application

A miniaturized Fermi tapered slot antenna for Ultra-Wide Band application is proposed in this paper. Fermi tapering profile (FTP) and tapered slot load (TSL) are employed in the design. FTP has the capacity to narrow radiation beam and maintain good directivity. TSL could extend the impedance bandwidth by broking physical limitation and improve the radiation characteristics in the lower frequencies as well. A prototype of the presented antenna has been fabricated and experimentally studied. The measured results have demonstrated to have a impedance bandwidth from 2.77 GHz to over 12 GHz. Highly directive patterns have also been observed in both E-plane and H-plane. Furthermore, a high gain varies from 6.18 to 10.79 dB in the working bandwidth of 3 GHz-12 GHz.