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Presentation
A Compact Dual-band Bandstop Filter Based on Fractal Microstrip Resonators
Progress In Electromagnetics Research Symposium, Prague, Czech Republic (2015)
  • 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
Abstract
Fractal geometries are found attractive to designers seeking for compact size mi-
crowave circuits and antennas. In this paper, Peano fractal based open-loop resonators are
adopted to design dual-band microstrip band-stop ¯lters (PSFs). The suggested ¯lter structure
is essentially based on that of the conventional open-loop rectangular microstrip resonators. The
resonators of the proposed PSF structure are made in the form of Peano fractal geometry with
di®erent iteration levels. Many ¯lters have been modeled, and their performances have been eval-
uated using a commercially available full-wave electromagnetic simulator. Each of the modeled
¯lter structures contains two pairs of open loop fractal based resonators with di®erent iteration
levels. The lower frequency band-stop performance is attributed to the resonators with higher
iteration level while the higher frequency band-stop performance is due to the resonators with
lower iteration level. Simulation results for the proposed microstrip ¯lters have con¯rmed the
validity to realize compact dual-band narrow-stopband microstrip ¯lters. A comparative study
implies that higher size reduction of the realized ¯lter has taken place as the iteration level of
the fractal microstrip open-loop resonators becomes higher. The results presented show that the
fractal-based resonators can be used to construct compact narrow-stopband ¯lters suitable for a
wide variety of the recently available communication applications.
Publication Date
2015
Citation Information
Hayder S. Ahmed, Ali J Salim and Jawad K. Ali. "A Compact Dual-band Bandstop Filter Based on Fractal Microstrip Resonators" Progress In Electromagnetics Research Symposium, Prague, Czech Republic (2015)
Available at: http://works.bepress.com/jawad_ali/9/