Synthesis of Planar Filters Using Defected Ground Structure Miniaturized Hairpin Resonators

Authors

  • M. Nedelchev Radiocommunication and Videotechnologies Department, Technical University of Sofia, Bulgaria
  • A. Kolev Radiocommunication and Videotechnologies Department, Technical University of Sofia, Bulgaria
Volume: 9 | Issue: 1 | Pages: 3734-3738 | February 2019 | https://doi.org/10.48084/etasr.2424

Abstract

This paper presents an effective technique to suppress the spurious passbands in planar filters by using defected ground structure (DGS) resonators etched in the ground plane. The proposed miniaturized hairpin DGS slot resonator is researched in terms of its resonance frequency, corresponding coupling topologies, and filter design. The resonator and the topologies of coupled DGS resonators are simulated in a fullwave electromagnetic (EM) simulator. Using a curve-fitting technique, useful design formulas are proposed for filter synthesis. Using the synthesis procedure, a 3rd order filter design is simulated, manufactured and measured. The insertion loss of -3dB in the passband of 280MHz is observed, while the suppression of the spurious passbands up to 12GHz is more than 24dB.

Keywords:

microstip, defected ground resonator, coupling coefficient, slot line filter deisgn

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References

M. Makimoto, S. Yamashita, Microwave Resonators and Filters for Wireless Communication, Theory Design and Applications, Springer, 2001 DOI: https://doi.org/10.1007/978-3-662-04325-7

J. Hong, M. J Lancaster, Microstrip Filters for RF/Microwave Applications, John Wiley and Sons, 2001 DOI: https://doi.org/10.1002/0471221619

R. Garg, I. Bahl, M. Bozzi, Microstrip Lines and Slotlines, Artech House 2013

H. J. Chen, T. H. Huang, C. S. Chang, L. S. Chen, N. F. Wang, Y. H. Wang, M. P. Houng, “A Novel Cross-Shape DGS Applied to Design Ultra-Wide Stopband Low-Pass Filters,” IEEE Microwave and Wireless Component Letters, Vol. 16, No. 5, pp. 252–254, 2006 DOI: https://doi.org/10.1109/LMWC.2006.873594

A. Abdel-Rahman, A. R. Ali, S. Amari, A. S. Omar, “Compact bandpass filters using defected ground structure (DGS) coupled resonators”, 2005 IEEE MTT-S International Microwave Symposium Digest, Long Beach, USA, June 12-17, 2005

P. Singh, R. Tomar, P. Bhartia, “The use of defected ground structures in designing microstrip filters with enhanced performance characteristics”, Procedia Technology, Vol. 17, pp. 58-64, 2014 DOI: https://doi.org/10.1016/j.protcy.2014.10.216

A. R. Ali, A. Abdel-Rahman, S. Amari, A. S. Omar, “Direct and cross-coupled resonator filters using defected ground structure (DGS) resonators”. 2005 European Microwave Conference, Paris, France, October 4-6, 2005 DOI: https://doi.org/10.1109/EUMC.2005.1610167

P. Vagner, M. Kasal, “A Novel Bandpass Filter Using a Combination of Open-Loop Defected Ground Structure and Half-Wavelength Microstrip Resonators”, Radioengineering, Vol. 19, No. 3, pp. 392-396, 2010

S. K. Parui, S. Das, “A New Defected Ground Structure for Different Microstrip Circuit Applications”, Radioengineering Vol. 16, No 1, pp. 16-16, 2007

D. J. Woo, T. K. Lee, “Suppression of Harmonics in Wilkinson Power Divider Using Dual-Band Rejection by Asymmetric DGS”, IEEE Transactions on Microwave Theory and Techniques, Vol. 53, No. 6, pp. 2139-2144, 2005 DOI: https://doi.org/10.1109/TMTT.2005.848772

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How to Cite

[1]
Nedelchev, M. and Kolev, A. 2019. Synthesis of Planar Filters Using Defected Ground Structure Miniaturized Hairpin Resonators. Engineering, Technology & Applied Science Research. 9, 1 (Feb. 2019), 3734–3738. DOI:https://doi.org/10.48084/etasr.2424.

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