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

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Design and Experiment of a Miniaturized Waveguide Band-Pass Filter Using L-Type Inverter and Small Resonant Aperture

L형 아이리스와 투과 공진 개구를 이용한 소형화된 도파관 여파기 설계 및 실험

  • Choi, Jin-Young (School of Electronics Engineering, IT College, Kyungpook University) ;
  • Kim, Byung-Mun (Division of IT Cooperative Systems, Gyeongbuk Provincial College) ;
  • Cho, Young-Ki (School of Electronics Engineering, IT College, Kyungpook University)
  • 최진영 (경북대학교 전자공학부) ;
  • 김병문 (경북도립대학교 IT특약 계열) ;
  • 조영기 (경북대학교 전자공학부)
  • Received : 2011.12.26
  • Accepted : 2012.02.27
  • Published : 2012.04.30
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Abstract

In this paper, a miniaturized band-pass filter structure, which comprises the irises of small resonant aperture and L-type irises inverter, is proposed. Ridged circular aperture iris is chosen as an elementary resonator. L-type iris which is placed between two adjacent elementary resonators is newly proposed as impedance inverter in order to reduce longitudinal length of the proposed filter. The fabricated minimized filter has 400 MHz bandwidth at the 10 GHz center frequency and the whole size is reduced to 70 % in length compared to conventional filter.

본 논문에서는 도파관의 단면(waveguide transverse plane)에 아이리스(iris)를 갖는 구조들을 도파관의 진행 방향으로 일정한 간격으로 배치하여 소형의 대역 통과 여파기를 구현하는 방법을 제시하고자 한다. 이를 위하여 리지가 장하된 원형 개구 아이리스를 여파기 설계의 기본 공진기 구조로 활용하며, 임피던스 인버터(impedance inverter)로 동작하게 되는 L형 아이리스를 새롭게 제안하여 여파기의 길이 방향 크기를 줄이는데 사용하였다. 최종 제작된 여파기는 중심 주파수 10 GHz에서 400 MHz의 대역폭을 갖는데, 기존의 여파기 설계 방식에 비하여 70 %의 소형화를 달성하였다.

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References

  1. M. Ohira, H. Deguchi, M. Tsuji, and H. Shigesawa, "Novel waveguide filters with multiple attenuation poles using frequency selective surfaces", 2005 IEEE MTT-S Int. Microwave Symp., Long Beach, CA, Jun. 2005.
  2. S. M. Amjadi, M. Soleimani, "Narrow band-pass waveguide filter using frequency selective surfaces loaded with surface mount capacitors", Electromagnetics in Advanced Applications, ICEAA, pp. 173-176, Sep. 2007.
  3. H. Bahrami, M. Hakkak, and A. Pirhadi, "Analysis and design of highly compact band-pass wave- guide filter utilizing complementary split ring resonators(CSRR)", Progress in Electromagnetics Research, vol. 80, pp. 107-122, 2008. https://doi.org/10.2528/PIER07111203
  4. N. Ortiz, J. D. Baena, M. B Beruete, F. Carcia-Garcia, and M. Sorolla, "Complementary split ring resonator for compact waveguide filter design", Microwave and Optical Technology Letters, vol. 46, no. 1, Jul. 2005.
  5. 최진영, 고지환, 조영기, "CSRR 구조의 투과단면적 계산", 한국전자파학회 전자파기술 하계학술대회논문집, 12(1), p. 72, 2011년 7월.
  6. D. W. Pohl, W. Denk, and M. Lanz, "Optical stethoscopy: Image recording with resolution ${\lambda}$/20", Appl. Phys. Lett., vol. 44, no. 7, pp. 651-653, Apr. 1984. https://doi.org/10.1063/1.94865
  7. 1214M. Golosovsky, D. Davidov, "'Novel milli-meterwave near-field resistivity microscope", Appl. Phys. Lett., vol. 68, no. 11, pp. 1579-1581, Mar. 1996. https://doi.org/10.1063/1.116685
  8. R. F. Harrington, "Resonant behavior of a small aperture backed by a conducting body", IEEE Trans. Antennas Propagat., vol. 30, no. 2, pp. 205-212, Mar. 1982. https://doi.org/10.1109/TAP.1982.1142761
  9. X. Shi, L. Hesselink, and R. Thornton, "Ultrahigh light transmission through a C-shaped nano-aperture", Opt. Lett., vol. 28, no. 15, pp. 1320-1322, Aug. 2003. https://doi.org/10.1364/OL.28.001320
  10. M. J. Lockyear, A. P. Bins, J. R. Sambles, and C. R. Lawrence, "Enhanced microwave transmission through a single sub-wavelength aperture surrounded by concentric grooves", Journal of Optics A, vol. 7, pp. S152-S158, 2005. https://doi.org/10.1088/1464-4258/7/2/020
  11. K. -W. Kim, J. W. Ko, J. E. Park, K. W. Kim, and Y. K. Cho, "Resonant transmission enhancement with a sub-wavelength aperture", Proceeding of IEEE Antennas and Propagation International Symposium 2007, pp. 1521-1524, Honolulu USA, Jun. 2007.
  12. J. Yeo, J. -W. Ko, J. -E. Park, and Y. -K. Cho, "FDTD analysis of resonant transmission in an electrically small circular aperture with a ridge", IEEE Antennas and Propagation Society International Symposium, pp. 1-4, Jul. 2008.
  13. 고지환, 조영기, 여준호, 이종익, "리지가 있는 소형 원형 개구의 공진 투과에 관한 연구", 한국전자파학회논문지, 22(6), 2011년 6월.
  14. D. K. Cheng, Field and Wave Electromagnetics, 2nd Ed., pp. 559-562, Addison Wesley, 1989.
  15. H. Bahrami, M. Hakkak, and A. Pirhadi, "Using complementary split ring resonators(CSRR) to design bandpass waveguide filters", Proceeding of APMC2007, pp. 1-4, Dec. 2007.
  16. M. Ohira, H. Deguchi, M. Tsuji, and H. Shigesawa, "A new dual-behavior FSS resonator for waveguide filter with multiple attenuation poles", Proceeding of 35th European Microwave Conference, pp. 189-192, Paris, Oct. 2005.