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Abstract

In this paper, a printed slot antenna fed by a co-planar waveguide for ultra wide bandwidth (UWB) with dual notch bands has been presented and discussed. The band notches are realized by etching one C-slot resonator inside a plaque shape exciting stub as well as symmetrically adding a pair of open-circuit stubs at the edge of the slot resulting in dual stop band filtering properties for WiMAX, WLAN application. Surface current distributions are used to analyze the effects of the slot and open circuit stub. The proposed antenna is fabricated and experimental results show that it has an impedance bandwidth of 2.6-14.34 GHz for VSWR ≤ 2, except dual frequency stop-bands of 3.3-3.7, 5.04-6.0 GHz. From the simulation results, it is observed that the radiation patterns are omnidirectional in the H-plane and dipole like nature in the E-plane. The gain varies from 3.7 dB to 5.7 dB over the whole UWB region excluding at notch bands.

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Dr. Tapan Mandal

Dr. Santanu Das