• 제목/요약/키워드: $YBa_2Cu_3O_{7}$

검색결과 375건 처리시간 0.042초

위성방송 수신용 원형 편파 고온초전도 평판 배열 안테나 (Design of the High-Temperature Superconducting Patch Array Antenna with Circular Polarization for DBS Receiver)

  • 하재권;강광용;곽민환
    • 한국초전도저온공학회:학술대회논문집
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    • 한국초전도저온공학회 2001년도 학술대회 논문집
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    • pp.142-144
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    • 2001

  • We designed superconducting four-element patch array antenna which has single-feed circularly polarization and a resonance frequency of 11.85 GHz for DBS receiving system. Antennas have been fabricated from both gold conductor and $YBa_{2}$$Cu_{3}$$O_{7-x}$(YBCO) superconductor (thin films) for comparison. Simulated and measured results, and analysis on resonant frequency(fr), return loss, and bandwidth are presented.

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레이저 증착법을 이용한 금속기판상 고온초전도 박막증착 및 특성분석 (Fabrication and Characterization of High Temperature Superconducting Thin Film on Metallic Substrate Using Laser Ablation)

  • 이상렬
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1995년도 추계학술대회 논문집 학회본부
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    • pp.329-331
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    • 1995

  • Laser ablation was used to fabricate superconducting $YBa_2Cu_3O_{7-x}$ (YBCO) thin films on metallic substrates with an YSZ buffer layer. An ArF excimer laser with an wavelength of 193 nm was used to deposit both YSZ buffer layer and superconducting thin film. The characterizations of thin films were performed and compared. With a 200 nm YSZ buffer layer, c-axis orientation and $T_c$=85 K were obtained for a 200 nm-thick YBCO film.

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