Abstract
A Planer CPW fed UWB monopole antenna with triple band notch characteristics is presented in this paper. Modal analysis of band-notched UWB antennas illustrates the existence of resonant modes linked to the embedded narrowband slot structure (slot modes), whose location within the planar geometry of the monopole determines the effect over the rest of the radiating modes of the wideband structure, and consequently, over the behavior of the antenna. The proposed antenna could potentially minimize frequency interference from many underlying technologies i.e. WLAN, WiMAX and Aeronautical mobile bands. The U slot that is etched out from the radiator results in creating band notch centered at 3.5GHz and 10.5 GHz. The band notch centered at 5.5GHz is obtained by L shape slots etched from the ground plane. The dimensions of proposed antenna are 45 mm × 41 mm × 0.762 mm and the proposed antenna is realized on Taconic substrate with e r = 2.2. The impedance bandwidth of the proposed antenna covers the frequency range from 2.8 GHz to 12 GHz. The simulated gain is 4.93dBi.
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