Volume 4 Number 6 (Dec. 2012)
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IJCEE 2012 Vol.4(6): 948-951 ISSN: 1793-8163 DOI: 10.7763/IJCEE.2012.V4.643

Novel Dual Band-Reject Microwave Filter Using C-Shaped Defected Ground Structures

Mostafa Attaran Kakhki and Mohammad H. Neshati
Abstract—In this paper, a new compact dual band-reject C-shaped defected ground structure (DGS) for microstrip line is introduced. Using two units of the same shaped DGS with different dimensions, a dual band-stop filter is designed and implemented. Results show that there are two parallel resonance frequencies at 2.468 GHz and 6.629 GHz with a very high Q-factor. The frequency characteristics of the proposed filter could be controlled by adjusting the DGS parameters such as width and length of both C-shaped patterns. Also, the distance between the two DGS structure could be adjusted for the required frequency characteristics. The proposed DGS provides Q-factor of more than 50 with attenuation of at least 20 dB at the resonant frequencies. The new introduced DGS filter is successfully designed and fabricated and the measured results are in a very good agreement with those obtained by numerical investigation.

Index Terms—Defected ground structure (DGS), dual bandreject filter, Q factor.

Mostafa Attaran Kakhki is with Electrical Department of Ferdowsi University of Mashhad, Mashhad, Iran (e-mail: m.attarankakhki@ieee.org).

Cite: Mostafa Attaran Kakhki and Mohammad H. Neshati, "Novel Dual Band-Reject Microwave Filter Using C-Shaped Defected Ground Structures," International Journal of Computer and Electrical Engineering vol. 4, no. 6, pp. 948-951, 2012.

General Information

ISSN: 1793-8163 (Print)
Abbreviated Title: Int. J. Comput. Electr. Eng.
Frequency: Quarterly
Editor-in-Chief: Prof. Yucong Duan
Abstracting/ Indexing: EI (INSPEC, IET), Ulrich's Periodicals Directory, Google Scholar, EBSCO, ProQuest, and Electronic Journals Library
E-mail: ijcee@iap.org

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