The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Split Ring Resonator-Based Bandstop Filter with an Enhanced Bandwidth

증가된 대역폭을 갖는 SRR 기반 대역 저지 여파기

  • Woo, Duk-Jae (School of Electronics, Telecommunication and Computer Engineering, Korea Aerospace University) ;
  • Lee, Taek-Kyung (School of Electronics, Telecommunication and Computer Engineering, Korea Aerospace University) ;
  • Lee, Jae-Wook (School of Electronics, Telecommunication and Computer Engineering, Korea Aerospace University)
  • 우덕제 (한국항공대학교 항공전자 및 정보통신공학부) ;
  • 이택경 (한국항공대학교 항공전자 및 정보통신공학부) ;
  • 이재욱 (한국항공대학교 항공전자 및 정보통신공학부)
  • Published : 2010.05.31
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Abstract

In this paper, a new method to enhance the stop bandwidth of the compact microstrip bandstop filter based on split ring resonator(SRR) was proposed. To achieve wide stop bandwidth, we incorporated the SRR within the circular etched pattern of the defected ground structure(DGS). By incorporating the SRR within the circular etched pattern, a high magnetic coupling between SRR and signal line can be achieved. The high magnetic coupling enables the proposed structure to achieve a wide stop bandwidth. To verify the feasibility of the proposed structure, the proposed bandstop filter was compared with conventional bandstop filter employing SRRs which have been etched at both sides of the signal line. Simulation and experimental results show that the proposed structure provides an enhanced stop bandwidth compared with the conventional structure.

본 논문에서는 split ring resonator(SRR)를 이용한 대역 저지 여파기의 저지 대역을 넓히는 방법을 제안하였다. 광대역 저지 특성을 얻기 위해, 마이크로스트립 전송 선로의 접지면에 위치한 원형의 defected ground structure(DGS) 내부에 SRR을 삽입하였다. DGS 내부에 SRR을 삽입하면 신호선과 SRR 사이의 강한 자기 결합이 일어나며, 그로 인해 넓은 저지 대역을 얻을 수 있다. 제안된 구조의 타당성을 증명하기 위하여 신호선 양옆에 SRR을 위치시킨 대역 저지 여파기와 제안된 대역 저지 여파기를 비교하였다. 제안된 구조가 기존의 구조보다 매우 넓은 저지 대역을 갖는 것을 시뮬레이션 및 제작한 결과로 확인하였다.

Keywords

References

  1. V. G. Veselago, "The electrodynamics of substances with simultaneously negative values of ${\varepsilon}$ and ${\mu}$", Sov. Phys.-Usp., vol. 10, pp. 509-514, 1968. https://doi.org/10.1070/PU1968v010n04ABEH003699
  2. D. R. Smith, W. J. Padilla, D. C. Vier, S. C. Nemat- Nasser, and S. Schultz, "Composite medium with simultaneously negative permeability and permitivity", Phys. Rev. Lett., vol. 84, no. 18, pp. 4184-4187, May 2000. https://doi.org/10.1103/PhysRevLett.84.4184
  3. J. B. Pendry, A. J. Holden, D. J. Robbins, and W. J. Stewart, "Magnetism from conductors and enhanced nonlinear phenomena", IEEE Trans. Microwave Theory Tech., vol. 47, no. 11, pp. 2075-2084, Nov. 1999. https://doi.org/10.1109/22.798002
  4. F. Martín, F. Falcone, J. Bonache, T. Lopetegi, R. Marqués, and M. Sorolla, "Miniaturized coplanar waveguide stopband filters based on multiple tuned split ring resonators", IEEE Microw. Wireless Compon. Lett., vol. 13, no. 12, pp. 511-513, Dec. 2003. https://doi.org/10.1109/LMWC.2003.819964
  5. F. Falcone, F. Martín, J. Bonache, R. Marqués, T. Lopetegi, and M. Sorolla, "Left handed coplanar waveguide band pass filters based on bi-layer split ring resonators", IEEE Microw. Wireless Compon. Lett., vol. 14, no. 1, pp. 10-12, Jan. 2004. https://doi.org/10.1109/LMWC.2003.821512
  6. J. Garcia-Garcia, F. Martin, F. Falcone, J. Bonache, I. Gil, T. Lopetegi, M. A. G. Laso, M. Sorolla, and R. Marques, "Spurious passband suppression in microstrip coupled line band pass filters by means of split ring resonators", IEEE Microw. Wireless Compon. Lett., vol. 14, no. 9, pp. 416-418, Sep. 2004. https://doi.org/10.1109/LMWC.2004.832066
  7. J. D. Baena, J. Bonache, F. Martin, R. M. Sillero, F. Falcone, T. Lopetegi, M. A. G. Laso, J. Garcia-Garcia, I. Gil, M. F. Portillo, and M. Sorolla, "Equivalent-circuit models for split-ring resonators and complementary split-ring resonators coupled to planar transmission lines", IEEE Trans. Microwave Theory Tech., vol. 53, no. 4, pp. 1451-1461, Apr. 2005. https://doi.org/10.1109/TMTT.2005.845211
  8. Chul-Soo Kim, Jun-seok Park, Dal Ahn, and Jae- Bong Lim, "A novel 1-D periodic defected ground structure for planar circuits", IEEE Microwave and Guided Wave Lett., vol. 10, no. 4, pp. 131-133, Apr. 2000. https://doi.org/10.1109/75.846922
  9. D. J. Woo, T. K. Lee, "Suppression of harmonics in Wilkinson power divider using dual-band rejection by asymmetric DGS", IEEE Trans. Microwave Theory Tech., vol. 53, no. 6, pp. 2139-2144, Jun. 2005. https://doi.org/10.1109/TMTT.2005.848772
  10. D. Ahn, J. S. Park, C. S. Kim, J. N. Kim, Y. Qian, and T. Itoh, "A design of the low-pass filter using the novel microstrip defected ground structure", IEEE Trans. Microwave Theory Tech., vol. 49, no. 1, pp. 86-93, Jan. 2001. https://doi.org/10.1109/22.899965
  11. J. S. Lim, C. S. Kim, D. Ahn, and Y. C. Jeong, "Design of low-pass filter using defected ground structure", IEEE Trans. Microwave Theory Tech., vol. 53, no. 8, pp. 2539-2545, Aug. 2005. https://doi.org/10.1109/TMTT.2005.852765