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Presentation
A Compact Triple Band BSF Design Based on Minkowski Fractal Geometry
18th IEEE Mediterranean Electrotechnical Conference, MELECON 2016, Limassol, Cyprus, April 2016 (2016)
  • Hayder S. Ahmed, Department of Electrical Engineering, University of Technology, Iraq
  • Ali J. Salim, Department of Electrical Engineering, University of Technology, Iraq
  • Jawad K. Ali, Department of Electrical Engineering, University of Technology, Iraq
  • Nasr N. Hussain, Department of Electrical and Computer Engineering, Portland State University, Portland, USA
Abstract
In this paper, Minkowski fractal based open-loop
resonators are adopted to design triple band microstrip bandstop
filters (BSFs). The suggested filter structures are primarily based
on that of the conventional open-loop rectangular microstrip
resonators. The resonators of the proposed BSF structure are
made in the form of Minkowski fractal geometry with different
iteration levels. Many filter structures have been modeled, and
their performances have been evaluated using the commercially
available EM simulator, Sonnet. Each of the modeled filter
structures contains two pairs of open loop fractal based
resonators with different iteration levels. The lower frequency
bandstop performance is attributed to the resonators with higher
iteration level while the higher frequency bandstop performance
is due to the resonators with lower iteration levels. Simulation
results for the proposed microstrip filters have confirmed the
validity to realize compact multiband narrow-stopband
microstrip filters. Measured results of a fabricated filter
prototype are found to be in reasonable agreement with those
predicted by numerical computation. The results presented show
that the proposed fractal based resonators can be used to
construct compact multiband filters with narrow stopbands.
Keywords
  • Minkowski fractal geometry,
  • miniaturized filters,
  • microstrip filters,
  • tri-band bandstop filters
Publication Date
April 18, 2016
DOI
10.1109/MELCON.2016.7495453
Citation Information
Hayder S. Ahmed, Ali J. Salim, Jawad K. Ali and Nasr N. Hussain, A Compact Triple Band BSF Design Based on Minkowski Fractal Geometry, 18th IEEE Mediterranean Electrotechnical Conference, MELECON 2016, Limassol, Cyprus, April 2016