Hexagonal boundary Sierpinski carpet fractal shaped compact ultrawideband antenna with band rejection functionality

Authors: Rowdra Ghatak, Anirban Karmakar, D.R. Poddar

Abstract:
In this paper a second iteration Sierpinski carpet fractal shape UWB antenna with hexagonal boundary is presented. The antenna covers the frequency band from 3 GHz to 12 GHz (VSWR ≤ 2). The proposed antennahas the capability to reject 5.15–5.825 GHz band assigned for IEEE802.11a and HIPERLAN/2 which is achieved by embedding a ‘Y’ shaped slotin the radiator that extends to the central conductor ofthe CPW feed as well. A fabricated prototype is developed where the simulation and experimental results are in good agreement. Measured peak antenna gain varies from 1.25 dBito 6 dBi within the band. The proposed antenna has a compact size of 33 mm × 32 mm that includes the substrate around the radiating element. Time domain characteristic reveal that the antenna is non-dispersive with a variation of measured group delay within 0.5 ns over the entire band.

Keywords:
UWB
Fractal antenna
Sierpinski carpet fractal
Band notch antenna
Monopole antenna

Published in: AEÜ-International Journal of Electronics and Communications (Volume 67, Issue 3, March 2013)

Publisher: Elsevier

ISSN Information: 1434-8411

Hexagonal boundary Sierpinski carpet fractal shaped compact ultrawideband antenna with band rejection functionality

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