Design and Fabrication of Tri-Stopband Bandstop Filters Using Cascaded and Multi-Armed Methods

Main Article Content

A. Boutejdar
S. D. Bennani


In this paper, we proposed a compact C-open-loop ring resonator and its equivalent circuit. The second cascaded BSF are designed using this simple C-ring resonator. The double ring BPF consists of two cascaded C-ring resonators, which are placed on the RO4003 substrate, while the other triple BSF structure consists of tree cascaded C-ring resonators, which are connected with input and output through microstrip feed lines. The both filters are simulated, optimized and partially realized using MWR simulator and Anritsu E5072A vector network analyzer VNA. In order to reduce the size and to improve the filter characteristics, novel compact filter topologies are designed basing on the previous structures. The proposed multi-band bandstop filters consist of several open-loop ring resonators placed vertically overlapping (coupled multi-armed ring resonator). Using this idea, the filter topologies with design flexibility, close size and excellent results are reached. The novel compact multi-band bandstop filters produce several stopband along a frequency range from DC to 9 GHz, in which each separate band exhibits an acceptable and useful bandwidth. Each stopband has regenerated two reflexion zeros, what leads to a good sharpness factors in the transition domains. Good agreement between the experimental results, full-wave simulation has been achieved. This new filter idea can be very attractive for the nowadays multilayer and compact radio frequency integrated circuit design.


Download data is not yet available.

Article Details

How to Cite
Boutejdar, A., & Bennani, S. D. (2017). Design and Fabrication of Tri-Stopband Bandstop Filters Using Cascaded and Multi-Armed Methods. Advanced Electromagnetics, 6(3), 18–24.
Research Articles
Author Biography

A. Boutejdar, German Research Foundation Bonn-Braunschweig (DFG), Germany

Dr. Eng. Ahmed Boutejdar was born in Souk El-Arbaa du Gharb, Morocco. He received the Bachelor of Science B.Sc in Electrical Engineering, Mathematics and Physics from both universities Technische Hochschule Köthen and from Ibn Tofeil University, Kénitra, Morocco between 1991 and 1995. From 1992 to 1993 Preparatory Year of german language and Preparatory Year of Engineering high School in köthen, Germany. B.Sc. and Diplom-Eng degrees (with highest honors) in Electrical Engineering, Communication, and Microwave Engineering from Otto-von-Guericke university, Magdeburg, Germany in 2002 and 2004 respectively, and the Ph.D. degree, Thesis title: Design, development and optimization of compact microstrip RF filters using "Defected Ground Structure" (DGS) technology (with highest honors) in electrical engineering from the Otto-von-Guericke university, Magdeburg, Germany in 2010. He worked until 2009 on research project entitled "Design, Analysis, and manufacturing of Microstrip Monopole DMS-Antennas and Compact Planar DGS-Filters ", founded by Land Sachsen-Anhalt at the University Magdeburg. From 2010 worked as a research on the project entitled "Design, optimization, CMOS-compatible fabrication and characterization of MEMS tunable planar and coplanar DGS filters". He is currently working in cooperation with the German Research Foundation (DFG) on a new research DFG-project entitled "Capacitive and resistive microelectromechanical switch with bridge structures made of spring steel, in particular for HF applications". His research interests include microwave and filter measurements, design and fabrication of UWB patch antennas, minimisation of compact Defected Ground Structure DGS-filters and antennas using MEMS-technology, design and optimisation of microstrip couplers, Defected Microstrip Structure DMS- compact antennas, reconfigurable planar filters and monopole antennas using varactor devices, measurement techniques and calibration of RF components, electromagnetic modeling (EM) and simulation and RF-circuit simulations.

Dr. Boutejdar has authored over 155 papers in international journals and proceedings of international and national symposia and a book chapter in "Ultra-Wideband, Short Pulse Electromagnetics 9" Springer 2010", and these papers have been cited by other researchers more than 712 times(Scopus: h index 13) and 1078 times (Google Scholar: h-index 16). Some papers are citet as references in three famous filter books: "Mirostrip and Printed Antennas: New Trends, Techniques an Applications (2011)", "Microstrip Filters for RF/ Microwave Applications, 2nd Edition (2011)" and "Issues in Optics, Light, Laser, Infrared, and Photonic Technology: 2011 Edition". He is reviewer of the IEE Microwave, Antennas & Propagation (IET). He is reviewer of the IEEE Microwave and Wireless Components Letters (MWCL). He is reviewer of the IEEE Electronics Letters. He is reviewer of the Mediterranean Microwave Conference (MMS). He is reviewer of the Hindawi Publishing Corporation/ International Journal of Microwave science and Technology (IJMST). He is reviewer of the Journal of Microwaves, Optoelectronics and Electromagnetic Applications (JMOe). He is reviewer of the Journal of Electromagnetic Analysis and Applications (JEMAA). He is reviewer . He is reviewer of the Progress in Electromagnetics Research Symposium (PIERS). He is reviewer of European Society for Applied Mathematics-EUROSAM. He is reviewer of the IEEE Transaction on Electromagnetic Compatibility (IEEE EMC). He is reviewer of International Journal of Circuit Theory and Applications and he is reviewer of the Recent Patents on Electrical Engineering-journal. He is reviewer of Applied Computational Electromagnetics Society Journal (ACES). He is reviewer of International Journal of Microwave and Optical Technology (IJMOT). He is reviewer of journal Advanced Electromagnetics. He is reviewer of Journal of Engineering and Technology Research


S. Vegesna, M.A. Saed, Compact Two-Layer Microstrip Bandpass Filters Using Broadside-Coupled Resonators, Progress In Electromagnetics Research B 37: 81-102, 2012.

View Article

J.M. Patin, N.R. Labadie, S.K. Sharma, Investigations on an H-Fractal Wideband Microstrip Filter with Multi-Passbands and a Tuned Notch Band, Progress In Electromagnetics Research B 22: 285-303, 2010.

View Article

L. Liu, R. Jin, X. Bai, Y. Li, X. Liang, J. Geng, C. He, A tri-band bandstop filter with sharp rejection and controllable bandstop frequencies, Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015 IEEE International Symposium on, pp. 2543 – 2544, 2015.

A. Boutejdar, W. Abd Ellatif, A.A. Ibrahim, M. Challal, A simple transformation from lowpass to bandpass filter using a new quasi-arrow head defected ground structure resonator and gap-J-inverter, Microwave and Optical Technology Letters 58: 947–953, 2016.

View Article

L.-C. Tsai, C.-W. Hsue, Dual-band bandpass filters using equal-length coupled-serial-shunted lines and Z-Transform technique, IEEE Trans. Microwave Theory Tech. 52: 1111–1117, 2004.

View Article

L.-C. Tsai, M.-L. Lee, Design of Low-pass Filters Using Three-and Two-section Stubs, Electron Devices and Solid-State Circuits, EDSSC 2007. IEEE Conference on , pp. 729 –732, 2007.

A. Boutejdar, A.A. Ibrahim, E.P. Burte, Design of 5 GHz-Compact Reconfigurable DGS-Bandpass Filter Using Varactor-diode Device and Coupling Matrix Technique, Microwave and Optical Technology Letters 58: 304–309, 2016.

View Article

A. Boutejdar, A. Omar, M. Al Sharkawy, A. Darwish, A Simple Transformation of Improved WLAN Band Pass to Low Pass Filter Using Defected Ground Structure (DGS), Defected Microstrip Structure (DMS) and Multilayer-Technique, Journal of Microwaves, Optoelectronics and Electronics and Electromagnetic Applications (JMOE) 12: 111-130, 2013.

View Article

A. Boutejdar et al., An Improvement of Defected Ground Structure Lowpass/Bandpass Filters Using H-Slot Resonators and Coupling Matrix Method, Journal of Microwaves, Optoelectronics and Electronics and Electromagnetic Applications (JMOE) 10: 295-307, 2011.

L.-Y. Ren, Quad-band bandpass filter based on dual-plane microstrip/DGS slot structure, Electron Lett. 46: 691–692, 2010.

View Article

Z.M. Hejazi, Z. Ali, Multiband bandpass filters with suppressed harmonics using a novel defected ground structure, Microwave and Optical Technology Letters 56: 2726–273, 2014.

View Article

A. Boutejdar, A. Elsherbini, A. Balalem, J. Machac, A. Omar, Design of New DGS Hairpin Microstrip Bandpass Filter Using Coupling Matrix Method, Progress In Electromagnetics Research Symposium, Prague, Czech Republic, pp.261-265, 2007.

G. Karimi, F.K. Hamedani, H. Siahkamari, Ultra-wide stopband low-pass filter using symmetrical cascaded modified hairpin resonators, International Journal of RF and Microwave Computer-Aided Engineering 24: 314–321, 2014.

View Article

A. Quendo, E. Ruis, A. Manchec, Y. Clavet, B. Potelon, J. -F. Favennec, C. Peson, Planar tri-band filter based on dualbehavior resonator (DBR), in Europ. Microw. Conf. Dig., Paris, 2005.

M. Mokhtaari, J. Bornemann, S. Amari, Coupling-matrix design of dual/triple-band uni-planar filters, in IEEE MTT-S Int. Microw. Symp. Dig., San Francisco, CA, pp. 515–518, 2006.

View Article

A. Boutejdar, Design of 5 GHz-compact reconfigurable DGS-bandpass filter using varactor-diode device and coupling matrix technique, Microwave Opt Technol Lett. 58: 304–309, 2016.

View Article

A. Boutejdar et al., Design of microstrip bandpass and lowpass filters using coupling matrix method and a new hairpin defected ground structure, Microwave Opt Technol Lett. 50: 2898–2901, 2008.

View Article

P.S. Upare, On the Design of Compact Dual Band Rejection Filters using Circular Open Loop Resonators, International Journal of Engineering Science and Technology (IJEST) 4: 1886–1891, 2012.

A. Boutejdar, N.M. Eltabit, A.A. Ibrahim, E.P. Burte, M.A. Abdalla, New Compact Dual Bandpass Filter Using Coupled Double-Ring Resonators and DGS-Technique, ACES Journal-The Applied Computational Electromagnetics 31: 132-137, 2016.

A. Boutejdar, A. Elsherbini, S. Amari, M. Awida, A. Omar, Design of a novel microstrip bandstop filter using one compact C-open-loop resonator, in Asia-Pacific Microwave Conf., Yokohama, Japan, 2006.

A. Boutejdar, A New approach to Design Compact Tunable BPF starting from Simple LPF Topology Using a Single T-DGS-Resonator and Ceramic Capacitors, Microwave and Optical Technology Letters, Microwave Opt Technol Lett. 58: 1142–1148, 2016.

View Article

A. Boutejdar, Theme der PhD thesis: Entwurf, Entwicklung und Optimierung von kompakten HF-Mikrostreifen-Filtern mittels Defected Ground Structure-Technik (DGS), doctorate degree (Dr. Eng.). At Otto-von-Guericke University, Magdeburg, November (2010).

M. Awida, A. Boutejdar, A. Safwat, H. El-Hannawy A. Omar, Multi-Bandpass Filters Using Multi-Armed Split Ring Resontors with Direct Feed, IEEE MTT-S International Microwave Symposium, Honolulu, Hawaii, 2007.

A. Boutejdar, N.M. Eltabit, A.A. Ibrahim, E.P. Burte, Design of Wide Stop Band L-Band LPF Based on DMS-DGS-Technique for Radar Applications, Hindawi Publishing Corporation International Journal of Microwave Science and Technology, Article ID 101602, 7-10, 2015.

A. Boutejdar, Develop a BPF from a Compact DGS LPF, Microwave & RF, Aug 30, 2016.

A. Boutejdar, A. Omar, and E. Burte, Design and Optimization of New Compct Tunable 2.4-GHz Band Pass Filter Using Coupled λ/2 Microstrip Open-Loop Resonators and MEMS-Switch Technique, Microwave and Optical Technology Letters 55: 2444–2450, 2013.

Most read articles by the same author(s)