Design and Fabrication of a Lowpass Filter Using a New Butterfly-Shaped Defected Ground Structure

  • Majeed Rashid Zaidan
  • Vahid Rezaeian
  • Saber Izadpanah Toos
Keywords: Defected Ground Structure, DGS, Low-pass filter, Microstrip filter


In this paper, a new Defected Ground Structure (DGS) is introduced and analyzed. The effect of the structure’s dimensions on the location of the attenuation pole and the cutoff frequency to study the frequency characteristics is investigated. In the following, a lowpass filter with 3 dB cutoff frequency at 3 GHz is designed and optimized using the proposed defected ground structure, and its frequency characteristic is reported. The designed lowpass filter is fabricated to verify the simulation process. Also, simulation results, the equivalent circuit, and the measured results with the Network Analyzer are compared.


[1] K. Wei, J.Y. Li, L. Wang, Z.J Xing, R Xui, “Mutual Coupling Reduction of Microstrip Antenna Array by Periodic Defected Ground Structures,” IEEE 5th Asia-Pacific Conference on Antennas and Propagation (APCAP), 2016.
[2] A. I. Hammoodi, H. Raad, and M. Milanova, “Mutual Coupling Reduction between Two Circular Patches Using H-Shape DGS,” IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2018.
[3] Deng, Z., W. Jiang, S. Gong, Y. Xu, and Y. Zhang, “A new method for broadening bandwidths of circular polarized microstrip antennas by using DGS parasitic split-ring resonators,” Progress In Electromagnetics Research, Vol. 136, 739-751, 2013.
[4] Zhang, J., B. Cui, S. Lin, and X.-W. Sun, “Sharp-rejection lowpass filter with controllable transmission zero using Complementary Split Ring Resonators (CSRRS),” Progress in Electromagnetics Research, Vol. 69, 219-226, 2007.
[5] Patel, R, A. Desai, and T. Upadhyaya, “An electrically small antenna using defected ground structure for RFID, GPS and IEEE 802.11 a/b/g/s applications,” Progress in Electromagnetic Research Letters, Vol. 75, 75-81, 2018.
[6] Huang, Y., Z. Shao, and L. Liu, “A substrate integrated waveguide bandpass filter using novel defected ground structure shape,” Progress in Electromagnetics Research, Vol. 135, 201-213, 2013.
[7] W. Shanshan, and S. Lizhong, “Design and simulation of a kind of wide band microwave coupler with defected ground structure,” IEEE International Conference on Electronic Information and Communication Technology (ICEICT), 2016.
[8] He, Z., J. Cai, Z. Shao, X. Li, and Y. Huang, “A novel power divider integrated with SIW and DGS technology,” Progress in Electromagnetics Research, Vol. 139, 289-301, 2013.
[9] A. Khare, S. Kharat, A. Rajapkar, S.M. Rathod, and M. Kulkarni , “Design of a Compact Wilkinson Power Divider using Four Asymmetric DGS for Harmonic Suppression,” TEQIP III Sponsored International Conference on Microwave Integrated Circuits, Photonics and Wireless Networks (IMICPW), 2019.
[10] R. L. Shao, Y. J. Zhou, L. Yang, and C. Tan, “Compact meander-slot DGS for MIMO antenna with high isolation”, 2018 International Workshop on Antenna Technology (IWAT), pp. 1-3, 2018.
[11] A. Barzgar, and H. Oraizi, “A low profile band pass DGS filter for harmonic suppression”, 2017 Sensors Networks Smart and Emerging Technologies (SENSET), pp. 1-4, 2017.
[12] Chang, C., Y. Qian, and T. Itoh, “Analysis and applications of uniplanar compact photonic bandgap structures,” Progress in Electromagnetic Research, Vol. 41, 211-235, 2003.
[13] D. Ahn, J. S. Park, C. S. Kim, J. Kim, Y. Qian, and T. Itoh, “A design of the lowpass filter using the novel microstrip defected ground structure”, IEEE Trans. Microwave Theory Tech., vol. 49, pp. 86-93, 2001.
[14] R. Er-rebyiy, J. Zbitou, A. Tajmouati, M. Latrach, A. Errkik, and L. El Abdellaoui, “A New Design of a Miniature Microstrip Patch Antenna Using Defected Ground Structure DGS”, Wireless Technologies Embedded and Intelligent Systems (WITS), 2017.
[15] S. Verma, D. Rano, and M.S. Hashmi, “A novel miniaturized band stop filter using fractal type defected ground structure (DSG)”, IEEE Asia Pacific Microwave Conference (APMC), pp. 799-802, 2017.
[16] Wang, C. J. and T. H. Lin, “A multi-band meandered slotted-ground-plane resonator and its application of lowpass filter,” Progress in Electromagnetics Research, Vol. 120, 249-262, 2011.
[17] Chen, J., Z.-B.Weng, Y.-C. Jiao, and F.-S. Zhang, “Lowpass filter design of Hilbert curve ring defected ground structures,” Progress in Electromagnetics Research, Vol. 70, 269-280, 2007.
[18] X. Guan, G. Li, and Z. Ma, “Optimized Design of a Lowpass Filter Using Defected Ground Structures,” In proceedings of the Asia-Pacific Microwave Conference, vol. 1, 2005.
[19] G. L. Matthaei, L. Young, and E. M. T. Jones, Microwave Filters, Impedance-Matching Networks, and Coupling Structures, Artech House Publishers, 1980.
[20] S. Sureshkumar, P. M. Rubesh Anand, A. Prajapati, and K. Sakthidasan Sankaran, “Low Pass Filter Design with CSRR as Defected Ground Structure,” IEEE International Conference on Communication and Signal Processing (ICCSP), pp. 893-896, 2018.
How to Cite
Zaidan, M., Rezaeian, V., & Izadpanah Toos, S. (2021). Design and Fabrication of a Lowpass Filter Using a New Butterfly-Shaped Defected Ground Structure. Majlesi Journal of Telecommunication Devices, 10(3). Retrieved from