대한전자공학회논문지TC (Journal of the Institute of Electronics Engineers of Korea TC)

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

고온초전도 헤어핀 콤 여파기의 cascade 구조에 관한 연구

Cascaded Structure of the High-Temperature Superconducting Hairpin-Comb Filter

  • 발행 : 2001.03.25
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

여파기의 스커트 특성을 향상시키기 위해서 동일한 주파수 특성을 지닌 독립적인 고온초전도 헤어핀 콤여파기를 효과적으로 cascade하는 방법을 제시하였다. Cascade 여파기는 공진기들을 마름모 형태로 배열한 구조로서 공진기 사이의 교차 결합을 최소화 할 수 있고 한정된 원형의 웨이퍼에 좋은 스커트 특성을 얻고자 할 때 효과적으로 쓰일 수 있다. 시뮬레이션 결과에 의하면 18 폴 cascade 여파기의 스커트 특성은 통과 대역 아래쪽과 위쪽에서 40dB/MHz 이상 감소하였다.

To improve the skirt characteristic of the high-temperature superconducting filter, we proposed a structure of cascading two independent hairpin-comb filters with an identical frequency response. Resonators of the cascaded filter are arranged in the shape of a diamond so that it minimizes the cross coupling between the resonators. This structure can be used effectively to improve the skirt characteristic of the filter in limited area of a circular wafer. The simulated skirt characteristic of the 18 pole cascaded filter is more than 40dB/MHz attenuation below and above the passband.

키워드

참고문헌

  1. D. Zhang, G.-C. Liang, C. F. Shih, Z. H. Lu, and M. E. Johansson, 'A 19-pole cellular band pass filter using 75-mm-diameter high-temperature superconducting thin films,' IEEE Microwave and Guided-wave Letters, vol. 20, pp. 405-407, Nov. 1995 https://doi.org/10.1109/75.473527
  2. H. T. Kim, B.-C. Min, Y. H. Choi, S.-H. Moon, S.-M. Lee, B. Oh, J.-T. Lee, I. Park, and C.-C. Shin, 'A compact narrowband HTS microstrip filter for PCS applications,' IEEE Trans. Applied Superconductioity, vol. 9, pp. 3909-3912, June 1999 https://doi.org/10.1109/77.783882
  3. G. Tsuzuki, M. Suzuki, N. Sakakibara, and Y. Ueno, 'Narrow band 2GHz superconducting filter,' in 1998 Asia-Pacific Microwave Conference, pp. 1509-1512
  4. G. Tsuzuki, M. Suzuki, N. Sakakibara, and Y. Ueno, 'Novel superconducting ring filter,' in 1998 IEEE MTT-S Int. Microwave Symp. Dig, vol. 1, pp. 379-382 https://doi.org/10.1109/MWSYM.1998.689397
  5. J.-F. Liang, C.-F. Shih, Q. Huang, D. Zhang, and G. -C. Liang, 'HTS microstrip filters multiple symmetric and asymmetric prescribed transmission zeros,' in 1999 IEEE MTT-S Int. Microwave Symp. Dig., vol. 4, pp.1551-1554 https://doi.org/10.1109/MWSYM.1999.780252
  6. J.-S. Hong, M. J. Lancaster, J.-C. Mage, 'Cross-coupled HTS microstrip open-loop resonator filter on LAO substrate,' in 1999 IEEE MTT-S Int. Microwave Symp. Dig., vol. 4, pp. 1559-1562 https://doi.org/10.1109/MWSYM.1999.780254
  7. G. L. Matthaei, N. O. Fenzi, R. J. Forse, and S. M. Rohlfing, 'Hairpin-comb filters for HTS and other narrow-band applications,' IEEE Trans. Microwave Theory Tech, vol. 45, pp. 1226-1231, Aug. 1997 https://doi.org/10.1109/22.618411
  8. G. L. Matthaei and G. L. Hey-Shipton, 'Concerning the use of high-temperature superconductivity in planar microwave filters,' IEEE Trans. Microwave Theory Tech, vol. 42, pp. 1287-1994, July 1994 https://doi.org/10.1109/22.299720
  9. M. J. Lancaster, Passive Microwave Device Applications of High-Temperature Superconductors. Cambridge University Press, 1997
  10. C.-C. Yang and C.-Y. Chang, Microstrip cascade trisection filter, IEEE Microwave and Guided-wave Letters, vol. 9, pp. 271-273, July 1999 https://doi.org/10.1109/75.774144
  11. J. S. Hong and M. J. Lancaster, 'Cross-coupled microstrip hairpin-resonator filters,' IEEE Trans. Microwave Theory Tech, vol. 46, pp. 118-122, Jan. 1998 https://doi.org/10.1109/22.654931
  12. J. S. Hong and M. J. Lancaster, 'Couplings of microstrip square open-loop resonators for cross-coupled planar microwave filters,' IEEE Trans. Microwave Theory Tech, vol. 44, pp. 2099-2109, Dec. 1996 https://doi.org/10.1109/22.543968
  13. R. Levy, 'Direct synthesis of cascaded quadruplet (CQ) filters,' IEEE Trans. Microwave Theory Tech., vol. 43, pp. 2940-2945, Dec. 1995 https://doi.org/10.1109/22.476634
  14. P. Pramnick, 'Compact 900-MHz hairpin-line filters using high dielectric constant microstrip line,' Int. J. of Microwave and Millimeter-wave Camp.-Aided Eng., vol. 4, pp. 272-281, 1994 https://doi.org/10.1109/MWSYM.1993.277028
  15. G. L. Matthaei, L. Young, and E. M. T. Jones, Microwave Filters, Impedance-Matching Networks, and Coupling Structures. Norwood, MA: Artech House, 1980