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    Linear voltage response of non-uniform arrays of bi-SQUIDs
    1.
    发明授权
    Linear voltage response of non-uniform arrays of bi-SQUIDs 有权
    双SQUID的非均匀阵列的线性电压响应

    公开(公告)号：US09097751B1

    公开(公告)日：2015-08-04

    申请号：US13686994

    申请日：2012-11-28

    申请人： Patrick Longhini ,  Visarath In ,  Anna Leese de Escobar ,  Antonio Palacios ,  Oleg Mukhanov

    发明人： Patrick Longhini ,  Visarath In ,  Anna Leese de Escobar ,  Antonio Palacios ,  Oleg Mukhanov

    IPC分类号： G01R33/02 ,  G01R33/035

    CPC分类号： G01R33/0356 ,  G01R33/0354

    摘要： An amplifier and method for improving linear response includes a plurality of N bi-SQUIDs. Each bi-SQUID has a non-uniform bi-SQUID parameter βi, described by βi=2πLiIciΦ0 can be defined for each bi-SQUIDs from i=1 to N, where Li is the loop inductance, ic is the critical current, and Φ0 is a flux quantum for each bi-SQUID. The non-uniform bi-SQUIDs can be connected in series or in parallel to establish a Superconducting Quantum Interference Filter (SQIF) array of bi-SQUIDs. Once connected, a mutual inductance between the connected bi-SQUIDs can be established. If the mutual inductance between connected bi-SQUIDs is accounted for, careful manipulation of the critical current or the loop size, or both, of each bi-SQUID can result in extremely uniform behavior (linear response) of the SQIF when considered as a whole, even though the behavior of the element bi-SQUIDs is non-uniform (different βi, parameters).

    摘要翻译： 用于改善线性响应的放大器和方法包括多个N个双SQUID。 每个双SQUID具有不均匀的双SQUID参数＆bgr; i，由＆bgr; i = 2＆pgr描述;对于从i = 1到N的每个双SQUID，可以定义LiIciΦ0，其中Li是环路电感，ic是 临界电流，Φ0是每个双SQUID的通量量子。 非均匀双SQUID可以串联或并联连接，以建立双SQUID的超导量子干涉滤波器（SQIF）阵列。 一旦连接，可以建立连接的双SQUID之间的互感。 如果考虑到连接的双SQUID之间的互感，仔细操作每个双SQUID的临界电流或环路尺寸或两者都可以导致SQIF在整体上被认为是非常均匀的行为（线性响应） ，即使元素bi-SQUID的行为是不均匀的（不同的＆bgr; i，参数）。

    Sensor signal processing using cascade coupled oscillators
    5.
    发明授权
    Sensor signal processing using cascade coupled oscillators 有权
    使用级联耦合振荡器的传感器信号处理

    公开(公告)号：US08994461B1

    公开(公告)日：2015-03-31

    申请号：US14037546

    申请日：2013-09-26

    申请人： Visarath In ,  Patrick Longhini ,  Yong (Andy) Kho ,  Antonio Palacios

    发明人： Visarath In ,  Patrick Longhini ,  Yong (Andy) Kho ,  Antonio Palacios

    IPC分类号： H03K3/03

    CPC分类号： H03K3/0322

    摘要： A cascaded oscillator array includes a first oscillator array and a second oscillator array. The first oscillator array includes at least three oscillator elements coupled unidirectionally in a first ring such that the first oscillator array outputs a first oscillating signal. Each of the at least three oscillator elements is coupled to receive a signal from a sensing element. The second oscillator array includes at least three oscillator elements coupled unidirectionally in a second ring such that the second oscillator array outputs a second oscillating signal. A first number of the at least three oscillator elements of the first oscillator array is the same as a second number of the at least three oscillator elements of the second oscillator. Each oscillator element of the at least three oscillator elements of the second oscillator array is coupled to receive an output signal from a single oscillator element of the at least three oscillator elements of the first oscillator.

    摘要翻译： 级联振荡器阵列包括第一振荡器阵列和第二振荡器阵列。 第一振荡器阵列包括在第一环中单向耦合的至少三个振荡器元件，使得第一振荡器阵列输出第一振荡信号。 所述至少三个振荡器元件中的每一个被耦合以从感测元件接收信号。 第二振荡器阵列包括在第二环中单向耦合的至少三个振荡器元件，使得第二振荡器阵列输出第二振荡信号。 第一振荡器阵列的至少三个振荡器元件的第一数量与第二振荡器的至少三个振荡器元件的第二数量相同。 第二振荡器阵列的至少三个振荡器元件的每个振荡器元件被耦合以从第一振荡器的至少三个振荡器元件的单个振荡器元件接收输出信号。

    Sensor Signal Processing Using Cascade Coupled Oscillators
    6.
    发明申请
    Sensor Signal Processing Using Cascade Coupled Oscillators 有权
    使用级联耦合振荡器的传感器信号处理

    公开(公告)号：US20150084704A1

    公开(公告)日：2015-03-26

    申请号：US14037546

    申请日：2013-09-26

    申请人： Visarath In ,  Patrick Longhini ,  Yong (Andy) Kho ,  Antonio Palacios

    发明人： Visarath In ,  Patrick Longhini ,  Yong (Andy) Kho ,  Antonio Palacios

    IPC分类号： H03K3/03

    CPC分类号： H03K3/0322

    摘要： A cascaded oscillator array includes a first oscillator array and a second oscillator array. The first oscillator array includes at least three oscillator elements coupled unidirectionally in a first ring such that the first oscillator array outputs a first oscillating signal. Each of the at least three oscillator elements is coupled to receive a signal from a sensing element. The second oscillator array includes at least three oscillator elements coupled unidirectionally in a second ring such that the second oscillator array outputs a second oscillating signal. A first number of the at least three oscillator elements of the first oscillator array is the same as a second number of the at least three oscillator elements of the second oscillator. Each oscillator element of the at least three oscillator elements of the second oscillator array is coupled to receive an output signal from a single oscillator element of the at least three oscillator elements of the first oscillator.

    摘要翻译： 级联振荡器阵列包括第一振荡器阵列和第二振荡器阵列。 第一振荡器阵列包括在第一环中单向耦合的至少三个振荡器元件，使得第一振荡器阵列输出第一振荡信号。 所述至少三个振荡器元件中的每一个被耦合以从感测元件接收信号。 第二振荡器阵列包括在第二环中单向耦合的至少三个振荡器元件，使得第二振荡器阵列输出第二振荡信号。 第一振荡器阵列的至少三个振荡器元件的第一数量与第二振荡器的至少三个振荡器元件的第二数量相同。 第二振荡器阵列的至少三个振荡器元件的每个振荡器元件被耦合以从第一振荡器的至少三个振荡器元件的单个振荡器元件接收输出信号。

    Coupled bi-stable microcircuit system for ultra-sensitive electrical and magnetic field sensing
    7.
    发明授权
    Coupled bi-stable microcircuit system for ultra-sensitive electrical and magnetic field sensing 有权
    耦合双稳态微电路系统，用于超敏感电磁场感应

    公开(公告)号：US08049570B1

    公开(公告)日：2011-11-01

    申请号：US12732023

    申请日：2010-03-25

    申请人： Visarath In ,  Patrick Longhini ,  Yong (Andy) An Kho ,  Joseph D. Neff ,  Antonio Palacios ,  Norman Liu

    发明人： Visarath In ,  Patrick Longhini ,  Yong (Andy) An Kho ,  Joseph D. Neff ,  Antonio Palacios ,  Norman Liu

    IPC分类号： H03K3/03 ,  G01R33/00

    CPC分类号： G01R33/04 ,  B82Y25/00 ,  G01R33/093

    摘要： An electrical/magnetic current sensing system includes a first collection mechanism configured to convert an electric field into surface charge, a second collection mechanism comprising a magnetic reactive material, and a sensor coupled to the first and second collection mechanisms. The sensor comprises an odd number, greater than or equal to three, of unidirectionally-coupled non-linear over-damped bi-stable elements. Each element comprises a resistive load, an operational transconductance amplifier (OTA) with a bipolar junction transistor differential pair, a cross-coupled OTA, and a non-linear OTA. Each element may comprise fully differential inputs and outputs. The sensor may be contained in a microchip or on a printed circuit board. A resident time difference readout device may be connected to the sensor, and may be configured to perform a power spectral density calculation. The sensor may include a resistance to voltage circuit connected between the second collection mechanism and the elements.

    摘要翻译： 电/磁电流感测系统包括被配置为将电场转换为表面电荷的第一收集机构，包括磁性反应性材料的第二收集机构和耦合到第一和第二收集机构的传感器。 传感器包括奇数，大于或等于三个单向耦合的非线性过阻尼双稳态元件。 每个元件包括电阻负载，具有双极结型晶体管差分对的工作跨导放大器（OTA），交叉耦合OTA和非线性OTA。 每个元件可以包括全差分输入和输出。 传感器可以容纳在微芯片或印刷电路板上。 驻留时间差读出装置可以连接到传感器，并且可以被配置为执行功率谱密度计算。 传感器可以包括连接在第二收集机构和元件之间的电压电路电阻。

    Frequency down-conversion system using arrays of coupled non-linear elements
    8.
    发明授权
    Frequency down-conversion system using arrays of coupled non-linear elements 有权
    使用耦合非线性元件阵列的下变频系统

    公开(公告)号：US08165557B1

    公开(公告)日：2012-04-24

    申请号：US12561996

    申请日：2009-09-17

    申请人： Visarath In ,  Patrick Longhini ,  Yong (Andy) An Kho ,  Joseph D. Neff ,  Suketu Naik ,  Norman Liu

    发明人： Visarath In ,  Patrick Longhini ,  Yong (Andy) An Kho ,  Joseph D. Neff ,  Suketu Naik ,  Norman Liu

    IPC分类号： H04B1/26

    CPC分类号： G01R33/04 ,  G01R31/31708

    摘要： A system includes at least a first array connected to a second array. The first array includes an odd number, greater than one, of unidirectionally-coupled non-linear first array elements. The second array includes an odd number, greater than one, of unidirectionally-coupled non-linear second array elements. The second array elements are unidirectionally-coupled in a direction opposite the coupling direction of the second array elements. The first array is configured to receive an input signal and down-convert the input signal. The second array is configured to receive the down-converted input signal, further down-convert the down-converted input signal, and output a down-converted output signal. The down-converted output signal is down-converted to a multiple of the frequency of the input signal proportional to the number of arrays of the system. The system may operate at frequencies greater than 1 GHz and may be contained in a microchip or on a printed circuit board.

    摘要翻译： 系统至少包括连接到第二阵列的第一阵列。 第一阵列包括单向耦合非线性第一阵列元件的奇数大于一个。 第二阵列包括单向耦合非线性第二阵列元件的奇数大于一个。 第二阵列元件沿与第二阵列元件的耦合方向相反的方向单向耦合。 第一阵列被配置为接收输入信号并对输入信号进行下变频。 第二阵列被配置为接收经下变频的输入信号，进一步降低转换后的输入信号，并输出下变频输出信号。 下变频输出信号被下变频成与系统阵列数量成比例的输入信号频率的倍数。 该系统可以在大于1GHz的频率下操作，并且可以包含在微芯片或印刷电路板上。

    Wideband non-linear circuits for implementation in frequency channel separation
    10.
    发明授权
    Wideband non-linear circuits for implementation in frequency channel separation 有权
    用于在频道分离中实现的宽带非线性电路

    公开(公告)号：US07902931B1

    公开(公告)日：2011-03-08

    申请号：US12391508

    申请日：2009-02-24

    申请人： Visarath In ,  Patrick Longhini ,  Yong (Andy) An Kho ,  Joseph D. Neff ,  Adi R. Bulsara ,  Frank E. Gordon ,  Norman Liu ,  Suketu Naik

    发明人： Visarath In ,  Patrick Longhini ,  Yong (Andy) An Kho ,  Joseph D. Neff ,  Adi R. Bulsara ,  Frank E. Gordon ,  Norman Liu ,  Suketu Naik

    IPC分类号： H03B1/00 ,  H03L7/24 ,  H04J1/00 ,  H04J1/02

    CPC分类号： G01R33/04 ,  G01R31/31708

    摘要： A device includes a plurality of channel-capture circuits. Each circuit may include an array of N non-linear oscillators, wherein N≧3, circularly connected to each other in series such that unidirectional signal flow occurs between the oscillators. Each circuit may be configured to capture a respective channel signal from a wideband signal containing a plurality of channel signals and convert its captured channel signal to a lower frequency. Each oscillator may include an oscillator input configured to receive an output signal from another oscillator, an oscillator output configured to provide an output for an input of another oscillator, a frequency capture input configured to receive at least a portion of the wideband signal, at least two amplifiers, and a control capacitor coupled to the output of the amplifiers. An analog-to-digital converter may be coupled to the output of each channel-capture circuit.

    摘要翻译： 一种装置包括多个通道捕获电路。 每个电路可以包括N个非线性振荡器的阵列，其中N≥3，串联地彼此圆形连接，使得在振荡器之间发生单向信号流。 每个电路可以被配置为从包含多个信道信号的宽带信号捕获相应的信道信号，并将其捕获的信道信号转换为较低的频率。 每个振荡器可以包括被配置为从另一个振荡器接收输出信号的振荡器输入，被配置为提供另一个振荡器的输入的输出的振荡器输出，配置成接收宽带信号的至少一部分的频率捕捉输入，至少 两个放大器和耦合到放大器的输出的控制电容器。 模数转换器可以耦合到每个通道捕获电路的输出。