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Presentation
A New Fractal Based PIFA Antenna Design for MIMO Dual Band WLAN Applications
Progress In Electromagnetics Research Symposium , Kuala Lumpur, Malaysia (2012)
  • Ali J Salim, Department of Electrical Engineering, University of Technology, Iraq
  • Raad S Fyath, Department of Electronic and Communication Engineering, University of Nahrain, Baghdad, Iraq
  • Adil H Ahmad, Department of Electrical Engineering, University of Technology, Iraq
  • Jawad K. Ali, Department of Electrical Engineering, University of Technology, Iraq
Abstract
This paper introduces the design of a dual-band internal F-PIFA (Fractal Planar
Inverted F-antenna) as a candidate for use in the dual band WLAN (wireless local area network)
MIMO (multi-input multi-output) applications. At first, the 4th iteration Koch's fractal geometry
has been applied to the edges of the conventional rectangular patch structure to design a single
compact antenna with a dual band resonant behavior. The radiating fractal based patch has
been printed on a substrate with relative permittivity of 4.1 and thickness of 0.9 mm, and the
antenna has been fed with 50­ probe. This antenna is located at the corner of a copper ground
plane of 0.05mm thickness and dimensions of 110* 70 mm2. It has been found that the resulting
F-PIFA has the dimensions of about 21mm * 15mm * 6.2 mm, making it suitable for mobile
terminal applications. Furthermore, the proposed antenna offers a dual band resonance with a
frequency ratio of about 2.41; resulting in bandwidths, for return loss · ¡10 dB, covering the
two WLAN band standards. Modeling and performance evaluation of the proposed antenna have
been carried out using the CST Microwave Studio. The modeled antenna has been applied to
a 4 by 4 MIMO system suggested for use in dual band WLAN applications. Simulation results
show that the suggested system offers · ¡10 dB impedance bandwidths of about 300MHz with
an isolation of about 12 dB, for the lower band, and 570MHz with an isolation of higher than
22 dB, for the upper band. This makes the proposed system suitable for use in MIMO dual band
WLAN applications.
Publication Date
March 27, 2012
Citation Information
Ali J Salim, Raad S Fyath, Adil H Ahmad and Jawad K. Ali. "A New Fractal Based PIFA Antenna Design for MIMO Dual Band WLAN Applications" Progress In Electromagnetics Research Symposium , Kuala Lumpur, Malaysia (2012)
Available at: http://works.bepress.com/jawad_ali/19/