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

  • 제11권8호
  • /
  • Pages.1313-1321
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  • 2000
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  • 1226-3133(pISSN)
  • /
  • 2288-226X(eISSN)
한국전자파학회 (The Korean Institute of Electromagnetic Engineering and Science)
권호 표지

의사 집중상수 소자 공진기의 새로운 비 인접 결합을 이용한 7-극 고온초전도 마이크로스트립 대역 통과 필터

7-Pole HTS Bandpass Filter Using New Non-adjacent Coupling of Pseudo-lumped Element Resonators

  • 전부경 ((주) 에이스테크놀로지 통신기술연구소(Communication R&D Institute, ACE Technology)) ;
  • 김종헌 (광운대학교 전파공학과(Dept. of Radio Science and Engineering, Kwangwoon University)) ;
  • 이찬주 (신흥대학 전자통신과(Dept. of Electrocommunication Engineering, Shinheung College)) ;
  • 민병철 (LG 종합기술원 소자재료연구소(Devices & Materials Lab., LG Cooperation Institute of Technology)) ;
  • 최영환 (LG 종합기술원 소자재료연구소(Devices & Materials Lab., LG Cooperation Institute of Technology))
  • 발행 : 2000.12.01
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초록

본 논문에서는 필터의 설계 및 구현이 용이하고 소형화가 가능한 새로운 구조의 고온초전도 마이크로스트립 형태의 의사 집중상수 소자 공진기를 제안하였다. 또한, 공진기들 사이의 비 인접 결합을 이용하여 notch를 갖는 필터특성의 7-극 대역통과 필터를 설계, 제작하였다. 7-극 notch를 갖는 필터는 두께 0.5mm, 유전율 23.5의 $LaAlO_{3}$ 기판상에 YBCO를 양면 증착하여 제작하였다. 측정결과, 절대 온도 20K에서 중심 주파수 1774MHz 차단대역(cut-off-band)에서 33㏈감쇠를 나타내었다.

This paper presents a novel HTS microstrip pseudo-lumped element resonator for the compact and simple filter design. A 7-pole bandpass filter with quasi-elliptic response is designed and fabricated using non-adjacent couplings between resonators. A seven-pole quasi-elliptic filter is fabricated using double sided YBCO on a LaAlO$_3$ substrate with thickness of 0.5 mm and dielectric constant of 23.5. The filter has an insertion loss of 0.8 dB at 20K, a bandwidth of 8 MHz at the center frequency of 1774 MHz, and an attenuation of 33 dB for the cut-off-band of 1 MHz.

키워드

참고문헌

  1. IEEE Trans. Microwave Theory Tech. v.46 no.7 Novel Compact Elliptic-Function Narrow-Band Bandpass Filters Using Microstrip Open-Loop Resonators With Coupled and Crossing Liners C. Yu;K. Chang
  2. IEEE Trans. MTT-S Digest Cross-Coupled HTS Microstrip Open-Loop Resonator Filter on LAO Substrate J. S. Hong
  3. IEEE Trans. Microwave Theory Tech. v.43 no.12 Narrowband Lumped-Element Microstrip Filters Using Capacitively-Loaded Inductors D. Zhang;G. C. Liang;C. F. Shin;M. E. Johansson;R. S. Withers
  4. IEEE Trans. Microwave Theory Tech. v.47 no.5 Superconducting Quasi-Lumped Element Filter on R-Plane Sapphire R. S. Kwok;D. Zhang;Q. Huang;T. S. Kaplan;J. Lu;G. C. Liang
  5. Microwave Filters, Impedance-matching Networks, and Coupling Structures G. L. Matthai;L. Young;E. M. Jones
  6. IEEE Trans. Microwave Theory Tech. v.27 no.1 Microstrip Tapped-Line Filter Design J. S. Wong
  7. IEEE Trans. Microwave Theory Tech. v.13 A Simple Design Procedure for Small Percentage Bandwidth Round-rod Interdigital Filters M. Dishal
  8. Korean Applied Physics (Ungyong Mulli) v.11 Doubled-side YBa₂Cu₃$O_{7-}$ Thin Films Deposited on 2-inch LaAlO₃ Wafers by Pulse Laser Deposition B. C. Min;Y. H. Choi;S. H. Moon;S. M. Lee;H. T. Kim;B. D. Oh