Frequency Response of Superconducting Filter with Center Frequency 22 GHz

22 GHz 초전도 필터의 주파수 응답 특성 분석

  • 김철수 (연세대학교 전기컴퓨터공학과) ;
  • 송석천 (연세대학교 전기컴퓨터공학과) ;
  • 이상렬 (연세대학교 전기컴퓨터공학과)
  • Published : 2000.07.01

Abstract

The fabrication of high quality superconducting thin films using pulsed laser deposition (PLD) has been reported to find optimized processing conditions and to make the millimeter-wave devices. High temperature superconducting (HTS) YBCO films were prepared on MgO (10${\times}$10${\times}$0.5mm) substrates by the PLD. The 3 pole bandpass filter with the center frequency of 22 GHz for satellite communication was designed consisting of hairpin coupled-lines to reduce the configuration in size. YBCO films are c-axis oriented and show superconductive transition temperatures of 88∼89 K with the transition widths < 0.5 K. The insertion loss of passband at 70 K was about 5 dB. The measured frequency response of superconducting filter will be compared with the simulation result.

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