Abstract
In this work, a novel ultra-wideband antenna with dual-band notches is presented. The metallic patch is formed by using semi-circular and dual symmetrical triangular structures. A semi-elliptical shape was etched in a partial ground plane to broaden the impedance bandwidth of the antenna. In order to obtain notch behavior, a fork-shaped ring resonator was loaded at the front face of the antenna. This ring is responsible for mitigating the interference with WiMAX working from 3.3 GHz to 3.7 GHz band. Moreover, the second band was generated using a modified dual connected cells of fork-shaped structure which embedded in the metallic patch as a defected microstrip structure (DMS). This notch is used to mitigate interference with WLAN working from 5.1 GHz to 5.9 GHz band. The simulation and experimental results show that the antenna can be used for UWB applications except at dual band-notches.
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