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A modified Wilkinson power divider/combiner using one added stepped- impedance open-circuited radial stub on each branch is proposed for UWB applications. The stepped-impedance open stub is used to introduce multiple transmission poles through the whole UWB frequency spectrum. The simulation results of the proposed small size and low cost power divider have shown equal power split between the two...
In this paper, a novel compact butterfly shaped planar monopole ultra-wideband (UWB) antenna is presented. This antenna is proposed and designed with a standard printed circuit board (PCB) process for suitable integration with MMICs and other components. The calculated impedance bandwidth of the proposed antenna ranges from 3 GHz to 12 GHz for a return loss S11 less than -10 dB. Also, it has a relatively...
In this paper, a novel printed ultra-wideband (UWB) microstrip line-fed monopole antenna is introduced. The proposed antenna is composed of a trapezoidal microstrip patch with two elliptical-shaped cuts from the radiating patch forming a bell-shaped cut. The designed antenna operates over impedance bandwidth 2.9-14 GHz. It exhibits an omni-directional radiation patterns with good gain flatness over...
In this paper, we presented a compact monopole antenna for UWB communications. It has been demonstrated that the proposed antenna can yield an UWB bandwidth of return loss less than -10 dB, from 3 GHz to 11.4 GHz covering the frequency band for most UWB communication systems. It is also observed that the proposed antenna exhibits a reasonable omni-directional radiation patterns in the H-plane. The...
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