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이중 급전 구조를 갖는 마이크로스트립 이중 모드 대역통과 필터

Microstrip dual mode band pass filter using doubly fed line

  • 투고 : 2015.04.02
  • 심사 : 2015.04.10
  • 발행 : 2015.04.28

초록

논문은 이중 급전을 갖는 마이크로스트립 이중 모드 대역 통과 필터를 제안한다. 제안된 필터는 이중 모드 구현을 위해 모서리 부분을 제거되고, 직교 슬롯을 포함하는 정사각형 패치와 이중 급전 구조로 구성된다. 직교 슬롯은 공진기의 소형화 및 불요신호를 억압하기 위해 사용되고, 상측 차단 대역에서의 차단 특성을 개선하기 위해 이중 급전 구조를 사용하였다. 보다 자세한 필터 설계 방법 및 특성 결과를 본문에 기술하였다.

In this paper, a microstrip dual mode band pass filter with doubly fed line is proposed. The proposed filter consists of a corner truncated patch with right crossed slots and doubly fed lines. In general, the resonator with the right crossed slots simultaneously has size reduction and spurious response suppression. In order to improve the rejection performance in out of its higher stop band, the dual mode resonator is excited by using doubly fed line. Details of the filter characteristics are described, and both simulated and measured results of the designed filter are presented.

키워드

참고문헌

  1. J. S. Hong and M. J. Lancaster, Microstrip Filters for RF/Microwave Applications, John Wiley & Sons, Inc., 2001.
  2. I. Wolff, "Microstrip bandpass filter using degeneration modes of a microstrip ring resonator," Electronics Letters, vol.8, no.12, pp. 302-303, June 1972. https://doi.org/10.1049/el:19720223
  3. S. Fu, B. Wu, J. Chen, S. Sun, and C. Liang, "Novel second-order dual-mode dual-band filter using capacitance loaded square loop resonator," IEEE Transactions on Microwave Theory and Techniques, vol.60, no.3, pp. 477-483, Mar. 2012. https://doi.org/10.1109/TMTT.2011.2181859
  4. J. S. Hong and M. J. Lancaster, "Microstrip bandpass filter using degenerate mode of a novel meander loop resonator," IEEE Microwave Guided Wave Letters, vol.5, no.11, pp. 371-372, Nov. 1995. https://doi.org/10.1109/75.473539
  5. B. T. Tan, S. T. Chew, M. S. Leong, and B. L. Ooi, "A modified microstrip circular patch resonator filter," IEEE Microwave and Wireless Components Letters, vol.12, no.7, pp. 252-254, July 2002. https://doi.org/10.1109/LMWC.2002.801135
  6. L. H. Hsieh and K. Chang, "Compact size and low insertion loss Chebyshev-function bandpass filters using dual-mode patch resonator," Eletronics Letters, vol.37, no.17, pp. 1070-1071, Aug. 2001. https://doi.org/10.1049/el:20010730
  7. W. H. Tu and K. Chang, "Miniaturized dual-mode bandpass filter with harmonic control," IEEE Microwave and Wireless Components Letters, vol.15, no.12, pp. 838-840, Dec. 2005. https://doi.org/10.1109/LMWC.2005.860019
  8. S. W. Fok, P. Cheong, K. W. Tam, and R. P. Martins, "A novel microstrip square-loop dual-mode bandpass filter with simultaneous size reduction and spurious response suppression," IEEE Transactions on Microwave Theory and Techniques, vol.54, no.5, pp. 2033-2041, May 2006. https://doi.org/10.1109/TMTT.2006.873626
  9. J. Wang, J. L. Li, J. Ni, S. Zhao, W. Wu, and D. Fang, "Design of miniaturized microstrip dula-mode filter with source-load coupling," IEEE Microwave and Wireless Components Letters, vol.20, no.6, pp. 319-321, June 2010. https://doi.org/10.1109/LMWC.2010.2047472
  10. NI AWR Design Environment ver.11.