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Fabrication and Performance Evaluation of a Fractal-based Slot Printed Antenna for Dual-band Wireless Applications
Iraqi Journal of Computer, Communication and Control Systems Engineering, IJCCCE (2014)
  • Jawad K. Ali, Department of Electrical Engineering, University of Technology, Iraq
  • Seevan F. Abdulkareem, Department of Electrical Engineering, University of Technology, Iraq
  • Ali J Salim, Department of Electrical Engineering, University of Technology, Iraq
  • Ali I Hammoodi, Department of Electrical Engineering, University of Technology, Iraq
  • Mahmood T. Yassen, Department of Electrical Engineering, University of Technology, Iraq
  • Mohammed R. Hussan, Department of Electrical Engineering, University of Technology, Iraq
Abstract
Different fractal geometries are successfully applied to design compact size printed
and microstrip antenna structures for multiband and dual-band wireless communication
applications. In this paper, a printed antenna with fractal based slot structure is presented as a
candidate for use in dual-band wireless applications. The slot structure of the proposed
antenna is with circle based fractal geometry. The slot structure has been etched in the ground
plane of an FR4 substrate with relative dielectric constant of 4.4 and 1.6 mm thickness. On
the reverse side a microstrip line has to be printed as a 50 Ω feed. Simulation results of the
modeled antenna show that it offers a dual-band resonant behavior with a considerable
resonant frequency ratio; covering a wide variety of wireless applications. Modelling and
performance evaluation of the resulting antenna are carried out using the commercially
available EM simulator HFSS, from Ansoft Corporation. A parametric study reveals that the
proposed antenna offers fractional bandwidths of about 13% to 27% of the lower resonating
band and 7% to 28% for the upper resonant band. The corresponding gain throughout these
bands varies from 2.53 to 3.58 dB and from 4.08 to 5.76 dB respectively. This makes the
antenna suitable for a wide variety of wireless applications. A fabricated prototype of the
proposed antenna shows a return loss response which is in reasonable agreement with that
theoretically predicted within the same swept frequency range. Furthermore, the proposed
antenna exhibits good radiation characteristics at the resonant bands.
Keywords
  • Fractal antenna,
  • slot antenna,
  • dual-band antenna,
  • printed antenna,
  • circle-based fractal geometry
Publication Date
2014
Citation Information
Jawad K. Ali, Seevan F. Abdulkareem, Ali J Salim, Ali I Hammoodi, et al.. "Fabrication and Performance Evaluation of a Fractal-based Slot Printed Antenna for Dual-band Wireless Applications" Iraqi Journal of Computer, Communication and Control Systems Engineering, IJCCCE Vol. 14 Iss. 2 (2014) p. 1 - 8
Available at: http://works.bepress.com/jawad_ali/23/