公开(公告)号：US5218297A

公开(公告)日：1993-06-08

申请号：US884473

申请日：1992-05-13

申请人： Hideaki Nakane ,  Yoshinobu Tarutani

发明人： Hideaki Nakane ,  Yoshinobu Tarutani

IPC分类号： G01R33/035

CPC分类号： G01R33/0358 ,  Y10S505/702 ,  Y10S505/846

摘要： Since a superconducting quantum interference device (SQUID) using a high temperature superconductor operates at the liquid nitrogen temperature 77 K, which is higher than the liquid helium temperature 4.2 K, it is necessary that the value of signal voltages is at a level, which is sufficiently higher than the thermal noise level. The superconducting inductance L should be decreased with increasing current flowing through Josephson junctions in the SQUID. The superconducting inductance can be reduced by various methods such as reduction in the size of the aperture of the superconducting inductance, parallel connection of superconducting inductances, utilization of a superconducting ground plane, etc., in order to realize a SQUID, which can be use in a wide application field at the liquid nitrogen temperature 77 K.

摘要翻译： 由于使用高温超导体的超导量子干涉装置（SQUID）在高于液氦温度4.2K的液氮温度77K下工作，所以信号电压值必须处于一个水平 足够高于热噪声水平。 超导电感L应随流过SQUID中约瑟夫逊结的电流增加而减小。 可以通过各种方法减少超导电感，例如减小超导电感的孔径尺寸，超导电感的并联连接，超导接地平面的利用等，以实现可以使用的SQUID 在液氮温度77K的广泛应用领域。

公开(公告)号：US5166614A

公开(公告)日：1992-11-24

申请号：US525665

申请日：1990-05-21

申请人： Koichi Yokosawa ,  Hideaki Nakane

发明人： Koichi Yokosawa ,  Hideaki Nakane

IPC分类号： A61B5/04 ,  A61B5/05 ,  G01R33/035 ,  H01L39/22

CPC分类号： G01R33/0358 ,  Y10S505/846

摘要： A pickup coil and a planar type SQUID are formed integrally on a single substrate to form a SQUID magnetometer. The SQUID is disposed on the surface of a projecting portion of the substrate and an insulating layer for spacing is laminated on the SQUID. The top, bottom and side surfaces of the assembly of the SQUID and insulating layer covering the same are all covered with a superconducting layer to form a magnetic shield for enclosing the SQUID. The magnetic shield is remote from the planar type pickup coil disposed on the remaining portion of the substrate by a distance which is equal to or greater than a length of one side of the size of the magnetic shield, thereby preventing magnetic flux distortion due to the presence of the magnetic shield from disturbing coil balance of the pickup coil.

公开(公告)号：US5550389A

公开(公告)日：1996-08-27

申请号：US171869

申请日：1993-12-22

申请人： Toshikazu Nishino ,  Mutsuko Hatano ,  Haruhiro Hasegawa ,  Hideaki Nakane ,  Ushio Kawabe ,  Kazuo Saitoh ,  Mitsuo Suga ,  Kazumasa Takagi

发明人： Toshikazu Nishino ,  Mutsuko Hatano ,  Haruhiro Hasegawa ,  Hideaki Nakane ,  Ushio Kawabe ,  Kazuo Saitoh ,  Mitsuo Suga ,  Kazumasa Takagi

IPC分类号： H01L39/14 ,  H01L29/06

CPC分类号： H01L39/145

摘要： A superconducting device low in power dissipation and high in operating speed is fabricated by use of a combination of a superconductor material and a semiconductor material. The superconducting device having a low power dissipation and high operating speed characteristic according to the present invention is suitable for configuring a large-scale integrated circuit.

摘要翻译： 通过使用超导体材料和半导体材料的组合来制造功耗低且工作速度高的超导装置。 根据本发明的具有低功耗和高工作速度特性的超导装置适用于配置大规模集成电路。

公开(公告)号：US4906930A

公开(公告)日：1990-03-06

申请号：US153047

申请日：1988-02-08

申请人： Hideaki Nakane ,  Toshikazu Nishino ,  Haruhiro Hasegawa

发明人： Hideaki Nakane ,  Toshikazu Nishino ,  Haruhiro Hasegawa

IPC分类号： G01R33/035

CPC分类号： G01R33/0356 ,  Y10S505/846

摘要： A SQUID for detecting a weak magnetic field is constructed of a sensor coil which detects a signal magnetic flux, and a superconducting loop which is magnetically coupled with the sensor coil to generate a periodic voltage corresponding to an interlinking magnetic flux from the sensor coil. The periodic voltage from the SQUID is amplified, and is taken out. The periodic voltage taken out is synchronously detected by a phase-sensitive detecting amplifier. The synchronously-detected signal is converted into a light signal, which is fed back to the SQUID. The light signal fed back is converted into an electric signal by a superconducting phototransistor which is arranged in a cryogenic atmosphere. A magnetic flux corresponding to the electric signal from the superconducting phototransistor is fed back to the superconducting loop by a feedback coil.

公开(公告)号：US4866373A

公开(公告)日：1989-09-12

申请号：US291338

申请日：1988-12-28

申请人： Yutaka Harada ,  Eiichi Goto ,  Ushio Kawabe ,  Nobuo Miyamoto ,  Hideaki Nakane ,  Mutsuko Hatano

发明人： Yutaka Harada ,  Eiichi Goto ,  Ushio Kawabe ,  Nobuo Miyamoto ,  Hideaki Nakane ,  Mutsuko Hatano

IPC分类号： G01R17/06 ,  G01R19/00 ,  G01R19/15 ,  G01R19/257

CPC分类号： G01R19/257 ,  G01R17/06 ,  G01R19/0092 ,  G01R19/15 ,  Y10S505/827 ,  Y10S505/845

摘要： A superconducting current detecting circuit which comprises a reference current generation circuit for generating a reference current and a DC flux parametron circuit for comparing an input current to be detected with the reference current to thereby produce pulses in synchronism with an input excitation signal, the number of the pulses being varied in accordance with a difference between the input current and the reference current, the pulses having positive or negative values depending on the polarity of the difference, the reference current generation circuit having means for increasing or decreasing the reference current by a quantity corresponding to the number of the pulses in response to the polarity of the pulses so that reference current generation circuit produces the reference current which agrees with the input current.

摘要翻译： 一种超导电流检测电路，包括用于产生参考电流的参考电流产生电路和用于将待检测的输入电流与参考电流进行比较的DC通量参数电路，从而产生与输入激励信号同步的脉冲， 所述脉冲根据所述输入电流和所述参考电流之间的差异而变化，所述脉冲具有取决于所述差的极性的正值或负值，所述参考电流产生电路具有用于将所述参考电流增加或减少量的装置 对应于响应于脉冲极性的脉冲数，使得参考电流产生电路产生与输入电流一致的参考电流。

公开(公告)号：US4777443A

公开(公告)日：1988-10-11

申请号：US119489

申请日：1987-11-12

申请人： Masao Yabusaki ,  Etsuji Yamamoto ,  Takashi Onodera ,  Yukiko Ogura ,  Hideaki Nakane ,  Shigeru Matsui ,  Hideki Kohno

发明人： Masao Yabusaki ,  Etsuji Yamamoto ,  Takashi Onodera ,  Yukiko Ogura ,  Hideaki Nakane ,  Shigeru Matsui ,  Hideki Kohno

IPC分类号： G01R33/035 ,  G01R33/36 ,  G01R33/20

CPC分类号： G01R33/326 ,  G01R33/0358

摘要： Disclosed in a nuclear magnetic resonance (NMR) based inspection apparatus using an SQUID flux meter for detecting a small NMR signal, in which a receiving coil for receiving the NMR signal from an object is connected to a mixer, which mixes a reference high-frequency signal with the NMR signal so that the NMR signal is reduced to a low-frequency signal having a differential component of frequencies of both signals, and the low-frequency signal is applied to the input coil of the SQUID flux meter so that it is converted into a voltage signal. The mixer circuit includes Schottky diodes operative at a liquid helium temperature or Josephson junctions, and the portions of apparatus from the reception coil up to the SQUID flux meter are operated in a superconductive state at a liquid helium temperature.

摘要翻译： 在使用SQUID通量计检测小型NMR信号的基于核磁共振（NMR）的检查装置中公开了一种用于从物体接收NMR信号的接收线圈连接到混频器，该混频器将参考高频 用NMR信号进行信号，使得NMR信号被减少到具有两个信号的频率的差分分量的低频信号，并且低频信号被施加到SQUID通量计的输入线圈，使得其被转换 变成电压信号。 混频器电路包括以液氦温度或约瑟夫逊结操作的肖特基二极管，并且从接收线圈到SQUID通量计的装置部分在液氦温度下处于超导状态。

公开(公告)号：US5256897A

公开(公告)日：1993-10-26

申请号：US729867

申请日：1991-07-10

申请人： Haruhiro Hasegawa ,  Toshiyuki Aida ,  Toshikazu Nishino ,  Mutsuko Hatano ,  Hideaki Nakane ,  Tokuumi Fukazawa

发明人： Haruhiro Hasegawa ,  Toshiyuki Aida ,  Toshikazu Nishino ,  Mutsuko Hatano ,  Hideaki Nakane ,  Tokuumi Fukazawa

IPC分类号： H01L39/22 ,  H01L29/161 ,  H01L29/48 ,  H01L29/56

CPC分类号： H01L39/22 ,  H01L39/228

摘要： An oxide superconducting device has a junction structure composed of at least one oxide superconductor and at least one insulator in which carriers have been generated. As the insulator in which carriers have been generated, there can be used, for example, SrTiO.sub.3 doped with Nb. With such a device, rectifying characteristics can be attained in the junction.

摘要翻译： 氧化物超导装置具有由至少一个氧化物超导体和至少一个其中已经产生载流子的绝缘体组成的结结构。 作为已经生成载流子的绝缘体，可以使用例如掺杂有Nb的SrTiO 3。 利用这种装置，可以在接合处获得整流特性。

公开(公告)号：US5252921A

公开(公告)日：1993-10-12

申请号：US669633

申请日：1991-03-14

申请人： Hideaki Nakane ,  Juan C. Cubillos ,  Eiichi Goto

发明人： Hideaki Nakane ,  Juan C. Cubillos ,  Eiichi Goto

IPC分类号： G01R33/035 ,  H01L39/22 ,  G01R33/16 ,  G01R33/35

CPC分类号： G01R33/0358 ,  Y10S505/846

摘要： A high-sensitive magnetometer has two SQUIDs each comprising a superconducting loop with one or more Josephson junctions and also has a coil comprising a continuous loop for providing magnetic flux of input signals to each of the SQUIDs in opposite directions. The magnetic flux of the input signals is detected by sums of output voltages of the SQUIDs. Magnetic flux noises equally applied on the two SQUID are cancelled by the continuous loop and at addition of the output voltages of the SQUIDs, thus large output signals can be obtained because sums of the two SQUID output signals are obtained.

公开(公告)号：US4875010A

公开(公告)日：1989-10-17

申请号：US174424

申请日：1988-03-28

申请人： Koichi Yokosawa ,  Etsuji Yamamoto ,  Hideaki Nakane ,  Masao Yabusaki ,  Yukiko Ogura

发明人： Koichi Yokosawa ,  Etsuji Yamamoto ,  Hideaki Nakane ,  Masao Yabusaki ,  Yukiko Ogura

IPC分类号： A61B5/055 ,  A61B10/00 ,  G01R33/035 ,  G01R33/32 ,  G01R33/36

CPC分类号： G01R33/326 ,  G01R33/0358

摘要： In a signal detecting circuit of, for example, an NMR apparatus, a signal transmission path transmits an AC magnetic flux signal to be superposed on a DC magnetic field whose strength does not change with time during a period of signal detection. The signal transmission path comprises a superconducting closed loop including a receiving coil receiving the AC magnetic flux signal, an input coil applying the received AC magnetic flux signal as an input to a flux meter, and a variable resistor replacing part of the superconducting closed loop and having its resistance value changed in relation to a change in the strength of the DC magnetic field.

摘要翻译： 在例如NMR装置的信号检测电路中，在信号检测期间，信号传输路径传输要叠加在强度不随时间变化的直流磁场上的交流磁通信号。 信号传输路径包括超导闭环，包括接收交流磁通信号的接收线圈，输入线圈将接收到的交流磁通信号作为输入馈送到通量计，以及替代部分超导闭环的可变电阻器，以及 其电阻值相对于直流磁场强度的变化而变化。