公开(公告)号：US20050023518A1

公开(公告)日：2005-02-03

申请号：US10628779

申请日：2003-07-28

申请人： Quentin Herr

发明人： Quentin Herr

IPC分类号： G06F5/08 ,  G11C19/32 ,  H01L29/06 ,  H01L31/0256 ,  H01L39/22

CPC分类号： G06F5/08 ,  G11C19/32 ,  H03K3/38

摘要： A digital first-in first-out (FIFO) buffer (10) for use with Single Flux Quantum (SFQ) superconductive integrated circuits. The digital FIFO buffer (10) includes a clock-storage circuit (14) for receiving and storing load and read clock signals (100, 104) and a data-storage circuit (16) connected to the clock-storage circuit (14) for receiving and storing data signal pulses (102) in the order which the data signal pulses (102) are received relative to the load clock signal (100). The data-storage circuit (16) outputs the SFQ pulse signal independent of the load clock signal (100). The previously stored clock and data signal pulses (100, 102) provide physical back pressure to their subsequent signal pulses.

摘要翻译： 用于单通量量子（SFQ）超导集成电路的数字先进先出（FIFO）缓冲器（10）。 数字FIFO缓冲器（10）包括用于接收和存储负载和读时钟信号（100,104）的时钟存储电路（14）和连接到时钟存储电路（14）的数据存储电路（16），用于 以数据信号脉冲（102）相对于负载时钟信号（100）的顺序接收和存储数据信号脉冲（102）。 数据存储电路（16）独立于负载时钟信号（100）输出SFQ脉冲信号。 先前存储的时钟和数据信号脉冲（100,102）为其后续的信号脉冲提供物理背压。

公开(公告)号：US6087884A

公开(公告)日：2000-07-11

申请号：US140319

申请日：1998-08-26

申请人： Seung Hwan Kim ,  Seon Hee Park ,  Chang Soo Ryu

发明人： Seung Hwan Kim ,  Seon Hee Park ,  Chang Soo Ryu

IPC分类号： H01L39/22 ,  H03K3/02 ,  H03K3/38 ,  H03K17/92

CPC分类号： H03K17/92 ,  H03K3/38

摘要： There is disclosed a bifrequency output device. The bifrequency output device comprises Josephson junctions, a resistor for generating a given voltage in response to a pulse current which is supplied from the outside, and a time delay element for delaying the voltage generated by the resistor during a given time period and then providing it to the superconducting elements, so that the bifrequency output device outputs different low frequency and low voltage and high frequency and high voltage depending on the initial condition of the superconducting elements constituting the Josephson junctions and the voltage with a given delay time which is induced to the superconducting elements.

摘要翻译： 公开了一种双频输出装置。 双频输出装置包括约瑟夫逊结，用于响应于从外部提供的脉冲电流产生给定电压的电阻器，以及用于在给定时间段内延迟由电阻器产生的电压然后提供给它的时间延迟元件 使得双频输出装置根据构成约瑟夫逊结的超导元件的初始条件和给定延迟时间的电压输出不同的低频和低电压以及高频和高电压，该延迟时间被诱导到 超导元件

公开(公告)号：US5336941A

公开(公告)日：1994-08-09

申请号：US925019

申请日：1992-08-05

申请人： Ichiro Ishida

发明人： Ichiro Ishida

IPC分类号： H01L39/22 ,  H03K3/38 ,  H03K19/195

CPC分类号： H03K19/1956 ,  H03K3/38 ,  Y10S505/864

摘要： According to the present invention, there is provided a superconducting circuit including a Josephson tunnel junction 1 and a load resistor 2 connected in parallel to the Josephson tunnel junction, in which a current source 5 is connected to the input terminal for the Josephson tunnel junction 1 and which has a pulse generator 3 in order to superimpose a pulse current to the current i from the current source 5.As the input signal, a current pulse is given to the current i within the range of below the critical current of the Josephson tunnel junction by means of the foregoing pulse generator 3 so that an excellent separation of the input and output is achieved without using any magnetic coupling circuit.

摘要翻译： 根据本发明，提供了一种超导电路，其包括并联连接到约瑟夫逊隧道结的约瑟夫逊隧道结1和负载电阻器2，其中电流源5连接到约瑟夫逊隧道结1的输入端 并且其具有脉冲发生器3，以便从电流源5向电流i叠加脉冲电流。作为输入信号，在低于约瑟夫森隧道的临界电流的范围内给电流i施加电流脉冲 通过上述脉冲发生器3连接，从而在不使用任何磁耦合电路的情况下实现输入和输出的良好分离。

公开(公告)号：US5019721A

公开(公告)日：1991-05-28

申请号：US395965

申请日：1989-08-18

申请人： Jon S. Martens ,  James B. Beyer ,  James E. Nordman ,  Gert K. G. Hohenwarter

发明人： Jon S. Martens ,  James B. Beyer ,  James E. Nordman ,  Gert K. G. Hohenwarter

IPC分类号： H01L39/14 ,  H01L39/22 ,  H03K3/38 ,  H03K17/92

CPC分类号： H01L39/225 ,  H01L39/145 ,  H03K17/92 ,  H03K3/38 ,  Y10S505/865 ,  Y10S505/874

摘要： Active superconducting devices are formed of thin films of superconductor which include a main conduction channel which has an active weak link region. The weak link region is composed of an array of links of thin film superconductor spaced from one another by voids and selected in size and thickness such that magnetic flux can propagate across the weak link region when it is superconducting. Magnetic flux applied to the weak link region will propagate across the array of links causing localized loss of superconductivity in the links and changing the effective resistance across the links. The magnetic flux can be applied from a control line formed of a superconducting film deposited coplanar with the main conduction channel and weak link region on a substrate. The devices can be formed of any type to superconductor but are particularly well suited to the high temperature superconductors since the devices can be entirely formed from coplanar films with no overlying regions. The devices can be utilized for a variety of electrical components, including switching circuits, amplifiers, oscillators and modulators, and are well suited to microwave frequency applications.

摘要翻译： 有源超导器件由超导体的薄膜形成，其包括具有有源弱连接区域的主导通道。 弱连接区域由薄膜超导体的连接阵列组成，薄壁超导体通过空隙彼此间隔开并且在尺寸和厚度上选择，使得当超导时磁通量可以在弱连接区域上传播。 施加到弱连接区域的磁通量将传播到连接的阵列上，导致链路中的超导性的局部损失并且改变跨越链路的有效电阻。 磁通量可以由与基板上的主导电通道和弱连接区共面共面的超导膜形成的控制线施加。 器件可以由任何类型的超导体形成，但是特别适合于高温超导体，因为器件可以由没有上覆区域的共面膜完全形成。 这些器件可用于各种电气元件，包括开关电路，放大器，振荡器和调制器，并且非常适合于微波频率应用。

公开(公告)号：US4603263A

公开(公告)日：1986-07-29

申请号：US468908

申请日：1983-02-23

申请人： Shuichi Tahara ,  Jun'ichi Sone

发明人： Shuichi Tahara ,  Jun'ichi Sone

IPC分类号： H03K3/38

CPC分类号： H03K3/38 ,  Y10S505/864

摘要： A Josephson pulse generator of the current injection type is composed of a first group of N (N.gtoreq.2) resistors, one end of each being connected together, the other ends of two of the N resistors being connected to first and second nodes. A second group of serially connected N-1 resistors is connected between the first and second nodes and to the other ends of the N-2 resistors in the first group not connected to the first and second nodes. N Josephson junctions are each connected between a reference potential and the other end of a different one of the N resistors. Two additional Josephson junctions, each having one end thereof connected, respectively, to the first node and the second node is provided along with an additional resistor connected between the other end of the Josephson junction connected to the first node and the reference potential.

摘要翻译： 电流注入型约瑟夫森脉冲发生器由第一组N（N> / = 2）电阻组成，其中一端连接在一起，其中两个N电阻的另一端连接到第一和第二节点 。 第二组串联N-1电阻器连接在第一和第二节点之间，并连接到第一组中不连接到第一和第二节点的N-2电阻器的另一端。 N个约瑟夫逊结各自连接在参考电位和不同N个电阻器的另一端之间。 两个附加的约瑟夫逊结，其一端分别连接到第一节点和第二节点以及连接在连接到第一节点的约瑟夫逊结的另一端和参考电位之间的附加电阻器。

公开(公告)号：US4130893A

公开(公告)日：1978-12-19

申请号：US782573

申请日：1977-03-29

申请人： Walter H. Henkels

发明人： Walter H. Henkels

IPC分类号： G11C11/44 ,  H01L39/22 ,  H03K3/38

CPC分类号： H01L39/223 ,  G11C11/44 ,  H03K3/38 ,  Y10S505/832

摘要： A superconducting memory cell which includes a single Josephson junction or write gate disposed in a superconducting loop having improved sense margins is disclosed. The improved sense margins are achieved by fabricating the superconducting loop so that first and second branches thereof have different inductances. In a specific example, a first branch containing the single Josephson junction has the higher inductance. Still more specifically, the inductance of the first branch containing the Josephson junction or write gate is twice as great as the inductance of the other branch when the I.sub.min of the write gate is zero. In addition, another Josephson junction or sense gate must be disposed in electromagnetically coupled relationship with the second branch of the loop, and binary information must be stored in the form of clockwise and counterclockwise circulating currents of equal magnitude. Writing and reading are accomplished by coincident currents being applied to the cell. A cell having a single control current in addition to a gate current for coincident current selection of a desired cell is shown. A similar cell having at least another control current in addition to the previously mentioned control current and a gate current for coincident current selection is also disclosed. The latter cell, embodied in array form, has a plurality of horizontally disposed control lines each of which intersects a row of memory cells. In addition, a diagonally disposed control line intersects the write gates of adjacent cells which are disposed in diagonally spaced relationship with each other. Arrays which include diagonal control lines have improved write margins and, if they conform to the criteria outlined above, they also have improved sense margins.

摘要翻译： 公开了一种超导存储单元，其包括设置在具有改善的感测余量的超导环路中的单个约瑟夫逊结或写入门。 通过制造超导环使得其第一和第二分支具有不同的电感来实现改善的感测余量。 在具体示例中，包含单个约瑟夫逊结的第一分支具有较高的电感。 更具体地说，当写入门的Imin为零时，包含约瑟夫逊结或写入门的第一分支的电感是另一支路的电感的两倍。 另外，另一个约瑟夫逊结或感应门必须以与环的第二分支电磁耦合的关系设置，并且二进制信息必须以相等大小的顺时针和逆时针循环电流的形式存储。 写入和读取是通过应用于单元的一致电流来实现的。 示出了除了栅极电流之外具有单个控制电流以用于期望电池的一致电流选择的电池。 还公开了除上述控制电流以外的至少另一控制电流的类似电池以及用于一致电流选择的栅极电流。 具有阵列形式的后一个单元具有多个水平布置的控制线，每条控制线与一行存储单元相交。 此外，对角设置的控制线与相邻单元的写入门相交，这些相邻单元的写入门以彼此对角间隔的关系设置。 包括对角线控制线的阵列具有改善的写入边距，并且如果它们符合上述标准，则它们也具有改善的检测边缘。

公开(公告)号：US3863078A

公开(公告)日：1975-01-28

申请号：US34100273

申请日：1973-03-14

申请人： IBM

发明人： ZAPPE HANS H

IPC分类号： G11C11/44 ,  H01L39/22 ,  H03K3/38 ,  H03K19/162 ,  H03K19/195 ,  H04L27/20 ,  H04L27/233 ,  H03K17/56

CPC分类号： H03K19/1952 ,  G11C11/44 ,  H01L39/223 ,  H03K3/38 ,  H04L27/2053 ,  H04L27/206 ,  H04L27/233 ,  Y10S505/856

摘要： Josephson tunneling devices are used as parametrons in circuits for logic and memory. Parametron circuits are used as input devices to conventional pulsed Josephson tunneling device circuitry, and as output devices from pulsed Josephson tunneling device circuitry. Therefore, transfers from phase information to pulse information and from pulse information to phase information are obtained. Interconnection between superconducting circuit chips is achieved using Josephson tunneling parametrons and Josephson tunneling detectors. Another interconnection scheme uses capacitive coupling between superconducting circuit chips without physical interconnections therebetween, and employs Josephson tunneling devices on separate chips for the receiving and sending circuitry.

摘要翻译： 约瑟夫森隧道器件用作逻辑和存储器电路中的参数。 参数电路用作常规脉冲约瑟夫逊隧道装置电路的输入装置，以及来自脉冲约瑟夫逊隧道装置电路的输出装置。 因此，获得从相位信息到脉冲信息以及从脉冲信息到相位信息的转移。 使用约瑟夫逊隧道参数和约瑟夫逊隧道探测器实现超导电路芯片之间的互连。 另一种互连方案使用超导电路芯片之间的电容耦合，而在它们之间没有物理互连，并且在接收和发送电路的单独芯片上使用约瑟夫逊隧道装置。

公开(公告)号：US3643237A

公开(公告)日：1972-02-15

申请号：US3643237D

申请日：1969-12-30

申请人： IBM

发明人： ANACKER WILHELM

IPC分类号： G11C8/00 ,  G11C11/44 ,  H01L27/00 ,  H01L39/22 ,  H03K3/38 ,  G11C5/02

CPC分类号： H03K3/38 ,  G11C8/00 ,  G11C11/44 ,  H01L27/00 ,  H01L39/223 ,  Y10S505/832

摘要： Switching and memory circuits which employ tunneling devices having nonlinearities are made more reliable by making each device a series arrangement of tunnel junctions. This built-in redundancy of each switching element eliminates problems due to frequent device short circuits, especially where there are thin tunnel barriers and the devices are operated under extreme temperature ranges. In a particular case, Josephson devices are used, each of which is a thin film structure having stacked junctions, i.e., a plurality of alternate layers of metal and tunnel barrier.

摘要翻译： 通过使每个器件具有隧道结的串联布置，使得采用具有非线性的隧穿装置的开关和存储电路变得更可靠。 每个开关元件的这种内置冗余消除了由于频繁的器件短路引起的问题，特别是在存在薄的隧道屏障并且器件在极端温度范围内工作的情况下。 在特定情况下，使用约瑟夫逊装置，每个装置是具有层叠结的薄膜结构，即金属和隧道屏障的多个交替层。

公开(公告)号：US3600644A

公开(公告)日：1971-08-17

申请号：US3600644D

申请日：1969-03-06

申请人： FORD MOTOR CO

发明人： ECK ROBERT E

IPC分类号： H01L39/22 ,  H03K3/38 ,  H01L5/04 ,  H01L9/08

CPC分类号： H01L39/223 ,  H03K3/38 ,  Y10S505/874

摘要： This disclosure relates to a low temperature circuit element exhibiting radio frequency or AC Josephson effects comprising a member constructed of metal capable of superconductivity at low temperatures and a second member constructed of a metal that is normal or nonsuperconductive. One of the members has a generally flat surface and the other has a tapered end either in the form of a point or a line positioned in contact with the flat surface. The disclosure also relates to the method of constructing a low temperature circuit element which comprises taking a material exhibiting superconducting effects when cooled to a critical temperature and another material of the normal or nonsuperconductive type. A flat surface is formed on the one member, while a tapered end, either in the form of a point or knife edge, is formed on the other. The members are cooled to a temperature equal to or below the critical temperature of the superconductive material. The member having the tapered end is then moved into engagement with the flat surface in a direction generally perpendicular to the plane of the flat surface.

公开(公告)号：US3553694A

公开(公告)日：1971-01-05

申请号：US3553694D

申请日：1969-02-24

申请人： PHILIPS CORP

发明人： CLARK TERENCE DANIEL

IPC分类号： H03B15/00 ,  H03K3/38 ,  H01Q3/22

CPC分类号： H03B15/00 ,  H03K3/38 ,  Y10S505/874

摘要： A SUPERCONDUCTIVE JOSEPHSON JUNCTION WAVE GENERATOR COMPRISING A PLURALITY OF SUPERCONDUCTOR BALL ELEMENTS ARRANGED IN TWO DIMENSIONAL ARRAY BETWEEN A PAIR OF ELECTRICAL CONTACTS WITH A LAYER OF NON-SUPERCONDUCTOR MATERIAL BETWEEN THE BALLS TO FORM THE JUNCTION. A DC VOLTAGE APPLIED THE CONTACTS WILL PRODUCE ELECTROMAGNETIC RADIATION AT VERY HIGH FREQUENCIES.