Development of a New Superconducting Analog Amplifier

新型超导模拟放大器的开发

• 批准号: 63550042
• 负责人: YOSHIDA Keiji
• 金额: $ 1.22万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-63550042/
• 关键词: Superconducting Device; Analog Amplifier; Superconducting Integrated Circuits

According to the research project planned in 1988, we carried out i) fundamental experiment of the present analog amplifier, and ii) design and fabrication of the amplifier. The following results are successfully obtained;1) Fundamental experiment of the present amplifier We proposed a new scheme for input coil to increase the conversion gain, which utilizes the kinetic inductance of superconducting thin films. We demonstrated this scheme experimentally by obtaining conversion gain as large as 100.2) Design and fabrication of the amplifier We designed an analog amplifier which incorporates the new input coil and evaluated the performance of this amplifier. We successfully demonstrated that the current noise of this amplifier was less than 100pA/ ROO<Hz> , which means that the proposed amplifier is a low noise and high gain one as expected.

根据1988年的研究计划，我们进行了模拟放大器的基础实验和放大器的设计与制作。1）本放大器的基础实验我们提出了一种利用超导薄膜的动态电感来提高转换增益的新的输入线圈方案。实验证明了该方案的可行性，获得了高达100的转换增益。2）放大器的设计与制作我们设计了一个模拟放大器，它采用了新的输入线圈，并评估了该放大器的性能。实验结果表明，该放大器的电流噪声小于100 pA/ ROO<Hz>，是一种低噪声、高增益的放大器。

项目成果

K.Eupuku,et al.: IEEE Transactions on Magnetics. MAG-25. (1989)

K.Eupuku 等人：IEEE 磁学汇刊。

K.Yoshida et.al.: "Inductive Coupling of a flux-flow-type Josephson oscillator to a stripline" IEEE Transactions on Magnetics 25-2, pp1084-1088, 1989.

K.Yoshida 等人：“磁通流型约瑟夫森振荡器与带状线的电感耦合”I​​EEE Transactions on Magnetics 25-2，第 1084-1088 页，1989 年。

T.Hashimoto et.al.: "Performance of a flux-flow-type Josephson amplifier" IEEE Transactions on Magnetics. 25. 1266-1270 (1989)

T.Hashimoto 等人：“磁通流型约瑟夫森放大器的性能”IEEE Transactions on Magnetics。

T.Hashimoto et.al: "Performanc of a flux-flow-type Josephson amplifier" IEEE Transactions on Magnetics. 25. 1266-1270 (1989)

T.Hashimoto 等人：“磁通流型约瑟夫森放大器的性能”IEEE Transactions on Magnetics。

T.Hashimoto et.al.: "Performance of a flux-flow-type Josephson amplifier" IEEE Transactions on Magnetics. 25-2. 1266-1270 (1989)

T.Hashimoto 等人：“磁通流型约瑟夫森放大器的性能”IEEE Transactions on Magnetics。