Abstract
In this letter, a compact ultrawideband (UWB) antenna using Sierpinski fractal geometry is presented and its characteristics are investigated. The miniaturization and wideband phenomena are attained due to introduction of Sierpinski fractal geometry in the UWB antenna design. The proposed antenna has a compact dimension of 25 × 16 mm2. It exhibits nearly omnidirectional radiation pattern, good return loss with good time domain response in terms of fidelity factor (>0.86) over the entire UWB frequency range. The presented prototype is fabricated and it demonstrates good measured characteristics with the simulated one. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:570–574, 2015
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