Study on miniaturized super-gain superconducting antenna

小型化超增益超导天线研究

• 批准号: 07455128
• 负责人: OHSHIMA Shigetoshi
• 金额: $ 3.26万
• 依托单位: Yamagata University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07455128/
• 关键词: superconducting antenna; patch antenna; YBCO thin film; antenna gain; array antenna; oxide superconductor; CeO_2バッファ層; 超電導アンテナ; 酸化物超電導薄膜

We have investigated the super-gain superconducting antenna, design, fabrication and characterization. These experimental results are as follows ;(1) Establishment of the design method of patch antenna operated at microwave region.We designed the patch antenna with a resonance frequency of 5 GHz. We could obtain the Cu patch antenna with input impedance of approximately 50 ohms and the resonance frequency of 50 ohms.(2) Fabrication and characterization of superconducting patch antenna.We fabricated the superconducting patch antenna using YBCO thin films. The input impedance of these antenna was slightly larger than that of designed value, 50 ohms. The difference between experimental results and design value was caused by the surface resistance of superconducting film. The gain of superconducting patch antenna was 2-4 dB higher than that of Au film antenna(3) Preparation of YBCO thin films for superconducting antenna using a plasma coupled magnetron sputtering.We fabricated the YBCO thin films for superconducting antenna by a plasma coupled magnetron sputtering. The Tc and Jc of these films obtained were 87K and 4x10^6A/cm^2 at 77K,respectively(4) Study on superconducting patch array antenna.We designed and fabricated the superconducting two and four elements array antennas. The antennas were characterized by resonance frequency, input impedance and gain measurements. The gain of superconducting array antenna was 3.2 dB higher than that of cu-array antenna with same geometry.

我们对超增益超导天线进行了研究、设计、制作和表征。这些实验结果如下：(1)建立了工作在微波区的贴片天线的设计方法，设计了谐振频率为5 GHz的贴片天线。获得了输入阻抗约为50欧姆、谐振频率约为50欧姆的铜贴片天线。(2)超导贴片天线的制备与表征。这些天线的输入阻抗略大于设计值，为50欧姆。实验结果与设计值的差异是由超导薄膜的表面电阻引起的。超导贴片天线的增益比金膜天线的增益高2-4分贝。(3)用等离子体耦合磁控溅射法制备了超导天线用YBCO薄膜。(4)超导贴片阵列天线的研究。设计并制作了超导二元和四元阵列天线。通过谐振频率、输入阻抗和增益测量对天线进行了表征。超导阵列天线的增益比相同几何形状的铜阵天线高3.2dB.

项目成果

Y.Nakamura, A.Ohsuka, S.Ohshima and K.Okumaya: "Fabrication and Characterization of Heteroepitaxial YBCO/CeO2/Al203Films" Proc.8th International Sympossium on Superconductivity. 989-992 (1995)

Y.Nakamura、A.Ohsuka、S.Ohshima 和 K.Okumaya：“异质外延 YBCO/CeO2/Al2O3 薄膜的制造和表征”Proc.8th 国际超导研讨会。

S.Ohshima, K.Ehata, M.Kusunoki: "The Gain and Directivity of a Superconducting Patch Antenna" Proc.6th International Superconducting Electronics Conference. 287-289 (1997)

S.Ohshima、K.Ehata、M.Kusunoki：“超导贴片天线的增益和方向性”Proc.6th 国际超导电子会议。

楠正暢, 大須賀彰, 江畑克史, 大嶋重利, 増本博, 平井敏雄: "誘導コイル結合型スッパッタリングによるYBa2Cu3Oy薄膜の作製" 日本金属学会誌. 61・9. 951-955 (1997)

Masanobu Kusunoki、Akira Osuga、Katsushi Ebata、Shigetoshi Oshima、Hiroshi Masumoto、Toshio Hirai：“通过感应线圈耦合溅射制备 YBa2Cu3Oy 薄膜”，日本金属学会杂志 61・955。

大嶋重利: "マイクロ波・ミリ波用酸化物超電導アンテナの設計及び評価" SCAT TECHNICAL Journal. 10. 9-15 (1996)

Shigetoshi Oshima：“微波和毫米波氧化物超导天线的设计和评估”SCAT TECHNICAL Journal。10. 9-15 (1996)

S.Ohshima, T.Fukunaga, T.Ogasawara, K.Okumaya, K.Imai and K.Sawaya: "Design and Fabrication of Metal and Superconducting Antennas" Proc.8th International Sympossium on Superconductivity. 1175-1178 (1995)

S.Ohshima、T.Fukunaga、T.Ogasawara、K.Okumaya、K.Imai 和 K.Sawaya：“金属和超导天线的设计与制造”Proc.8th 国际超导研讨会。