Invited paper : Design and fabrication of compact superconducting filters and antennas using high quality YBCO films

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概要

• 論文の詳細を見る

• We investigated the relationship between Rs and Jc of YBCO thin films, and examined that 'How to reduce the surface resistance of YBCO thin films on MgO and sapphire substrates, especially on r-cut and c-cut plane of sapphire substrates' and found that in-plane orientation of the grains was most important parameter to reduce the surface resistance. We could obtain the perfect in-plane oriented YBCO thin films on MgO and r-cut plane sapphire substrates, however, it was difficult on c-cut plane sapphire substrates. Because, c-cut plane of the sapphire substrate is hexagonal synmetry. Also we designed the compact superconducting filters of cross-coupled hair pin filter by an electromagnetic simulator. We found that the skirt properties of the filter are superior to that of Chevyshev type filter. Superconducting patch array antennas were also fabricated by YBCO thin films and measured the gain, directivity and stability of these array antennas using compact cooling system.

• 社団法人電子情報通信学会の論文
• 2002-11-28

著者

• OHSHIMA Shigetoshi

  Faculty of Engineering, Yamagata University

• Ohshima Shigetoshi

  Faculty Of Engineering Yamagata University

• Mikami Hiroshi

  Faculty Of Engineering Yamagata University

• SHIRAKAWA Masanobu

  Faculty of Engineering,Yamagata University

• TAKEDA Makoto

  Faculty of Engineering,Yamagata University

• UCHIDA Takashi

  Hitachi Kokusai Electric Inc.

• KAGAYA Noriyuki

  Hitachi Kokusai Electric Inc.

• SUDO Masaki

  Hitachi Kokusai Electric Inc.

• Ohshima S

  Faculty Of Engineering Yamagata University

• Shirakawa Masanobu

  Faculty Of Engineering Yamagata University

• Takeda Makoto

  Faculty Of Engineering Yamagata University

関連論文

• Fabrication and Microstructure of All In-plane Aligned A-Axis Oriented Superconductor/Insulator/Superconductor Junctions
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• In-Plane Orientation Control of C-Axis Oriented YBa_2Cu_3O_ Films on MgO Substrates by BaSnO_3 Buffer Layers
• In-plane Orientation of C-Axis Oriented YBa_2Cu_3O_x Films on MgO Substrates
• Studies on the Surface Morphology and Orientation of CeO_2 Films Deposited by Pulsed Laser Ablation
• Relationship between T_c and Cu Valence and Bond Lengths of Cu-Cu and Cu-O for Ba_Eu_Cu_3O_ Compounds
• Structure and Resistivity of BaBiO_y, Ba_<1x>La_xBiO_3, and BaBi_<1x>La_xO_3 (Special Issue on High-Temperature Superconducting Electronics)
• Crystallization of Amorphous YBCO and BSCCO Thin Films by Zone-Melt Technique (Special Issue on High-Temperature Superconducting Electronics)
• Calcium Stearate Thin Films Evaporated onto NaCl
• Invited paper : Design and fabrication of compact superconducting filters and antennas using high quality YBCO films
• Surface Resistance of Bi_2Sr_2Ca_1Cu_2O_y Strip Lines Made from Green Sheet
• Temperature Dependence of the Surface Resistance of a Bi-Sr-Ca-Cu-O Whisker Measured by the Probe-Coupled Microstrip Resonator Method : Superconductors
• C-8-14 Single-fed Superconducting Circularly Polarized Patch Array Antenna at 12GHz for DBS System
• Critical Current Densities in Superconducting Y-Ba-Cu-O Prepared by Chelating Method
• In-plane Orientation of C-Axis Oriented YBa2Cu3Ox Films on MgO Substrates
• Self-Epitaxial Growth of Metastable A15 V3Al on Au-Coated Sapphire Substrates
• Preparation of Superconducting Y–Ba–Cu–O and Bi–Pb–Sr–Ca–Cu–O Compounds by Chelating Method

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