公开(公告)号：US08872690B1

公开(公告)日：2014-10-28

申请号：US13482266

申请日：2012-05-29

申请人： Amol Inamdar ,  Deepnarayan Gupta

发明人： Amol Inamdar ,  Deepnarayan Gupta

IPC分类号： H03M1/12

CPC分类号： H03M3/458 ,  H03M1/0854 ,  H03M1/12 ,  H03M1/1245 ,  H03M1/68 ,  H03M3/02 ,  H03M3/46

摘要： Superconductor analog-to-digital converters (ADC) offer high sensitivity and large dynamic range. One approach to increasing the dynamic range further is with a subranging architecture, whereby the output of a coarse ADC is converted back to analog and subtracted from the input signal, and the residue signal fed to a fine ADC for generation of additional significant bits. This also requires a high-gain broadband linear amplifier, which is not generally available within superconductor technology. In a preferred embodiment, a distributed digital fluxon amplifier is presented, which also integrates the functions of integration, filtering, and flux subtraction. A subranging ADC design provides two ADCs connected with the fluxon amplifier and subtractor circuitry that would provide a dynamic range extension by about 30-35 dB.

摘要翻译： 超导体模数转换器（ADC）具有高灵敏度和大动态范围。 进一步增加动态范围的一种方法是使用子架构，由此将粗略ADC的输出转换回模拟并从输入信号中减去，并将剩余信号馈送到精细ADC以产生额外的有效位。 这也需要高增益宽带线性放大器，这在超导体技术中通常不可用。 在优选实施例中，提出了分布式数字通量放大器，其还集成了积分，滤波和磁通减法的功能。 子阵列ADC设计提供了两个与物理放大器和减法器电路连接的ADC，可提供大约30-35 dB的动态范围扩展。

公开(公告)号：US07816940B1

公开(公告)日：2010-10-19

申请号：US12535434

申请日：2009-08-04

申请人： Deepnarayan Gupta ,  Amol Inamdar

发明人： Deepnarayan Gupta ,  Amol Inamdar

IPC分类号： H03K19/195

CPC分类号： H03K19/01 ,  H03F19/00 ,  H03K11/00 ,  H03K17/92 ,  H03K19/1954

摘要： Supercooled electronics often use Rapid Single Flux Quantum (RSFQ) digital circuits. The output voltages from RSFQ devices are too low to be directly interfaced with semiconductor electronics, even if the semiconductor electronics are cooled. Techniques for directly interfacing RSFQ digital circuits with semiconductor electronics are disclosed using a novel inverting transimpedance digital amplifier in conjunction with a non-inverting transimpedance digital amplifier to create a differential transimpedance digital amplifier that permits direct interfacing between RSFQ and semiconductor electronics.

摘要翻译： 过冷电子设备通常使用快速单通量（RSFQ）数字电路。 RSFQ器件的输出电压太低，即使半导体电子器件被冷却，也不能与半导体电子器件直接接口。 使用新颖的反相跨阻抗数字放大器结合非反相跨阻抗数字放大器公开了将RSFQ数字电路与半导体电子器件直接接口的技术，以产生允许RSFQ和半导体电子器件之间直接接口的差分跨阻抗数字放大器。

公开(公告)号：US08055235B1

公开(公告)日：2011-11-08

申请号：US12434590

申请日：2009-05-01

申请人： Deepnarayan Gupta ,  Amol Inamdar

发明人： Deepnarayan Gupta ,  Amol Inamdar

IPC分类号： H04B1/10

CPC分类号： H04B1/10 ,  H04B1/525

摘要： A system and method for receiving a signal, comprising an input adapted to receive a radio frequency signal having a strong interferer; a signal generator, adapted to produce a representation of the interferer as an analog signal generated based on an oversampled digital representation thereof; and a component adapted to cancel the strong interferer from radio frequency signal based on the generated analog signal to produce a modified radio frequency signal substantially absent the interferer. The system typically has a nonlinear component that either saturates or produces distortion from the strong interferer, which is thereby reduced. The system preferably employs high speed circuits which digitize and process radio frequency signals without analog mixers.

摘要翻译： 一种用于接收信号的系统和方法，包括：适于接收具有强干扰源的射频信号的输入; 信号发生器，适于产生干扰源的表示，作为基于其过采样数字表示生成的模拟信号; 以及适于基于所生成的模拟信号从射频信号消除强干扰源以产生基本上不存在干扰源的修改的射频信号的分量。 系统通常具有非线性分量，其从强干扰源饱和或产生失真，从而减少。 该系统优选采用数字化和处理射频信号的高速电路，而不需要模拟混频器。

公开(公告)号：US08249540B1

公开(公告)日：2012-08-21

申请号：US12535843

申请日：2009-08-05

申请人： Deepnarayan Gupta ,  Amol Inamdar

发明人： Deepnarayan Gupta ,  Amol Inamdar

IPC分类号： H04B1/10

CPC分类号： H04B1/10 ,  H04B1/109 ,  H04B1/525 ,  H04B7/15585 ,  H04L27/01

摘要： A radio frequency receiver subject to a large in-band interferor employs active cancellation with coarse and fine cancellation signals, each with a respective radio frequency combiner, in order to increase the effective dynamic range of the receiver for weak signals of interest. One or both can be digitally synthesized. This is particularly applicable for co-site interference, whereby the interfering transmit signal is directly accessible. A similar system and method may also be applied to external interferors such as those produced by deliberate or unintentional jamming signals, or by strong multipath signals. An adaptive algorithm may be used for dynamic delay and gain matching. In a preferred embodiment, a hybrid technology hybrid temperature system incorporates both superconducting and semiconducting components to achieve enhanced broadband performance.

摘要翻译： 受到大带内干扰器的射频接收机采用具有粗略和精细消除信号的主动消除，每个具有相应的射频组合器，以便增加感兴趣的弱信号的接收机的有效动态范围。 一个或两个可以是数字合成的。 这特别适用于同站干扰，从而可以直接访问干扰发射信号。 类似的系统和方法也可以应用于外部干扰器，例如由有意或非故意的干扰信号产生的干扰，或通过强多径信号。 自适应算法可用于动态延迟和增益匹配。 在优选实施例中，混合技术混合温度系统并入超导和半导体元件以实现增强的宽带性能。

公开(公告)号：US07570075B2

公开(公告)日：2009-08-04

申请号：US11824419

申请日：2007-06-29

申请人： Deepnarayan Gupta ,  Amol Inamdar

发明人： Deepnarayan Gupta ,  Amol Inamdar

IPC分类号： H03K19/195

CPC分类号： H03K19/01 ,  H03F19/00 ,  H03K11/00 ,  H03K17/92 ,  H03K19/1954

摘要： Supercooled electronics often use Rapid Single Flux Quantum (RSFQ) digital circuits. The output voltages from RSFQ devices are too low to be directly interfaced with semiconductor electronics, even if the semiconductor electronics are cooled. Techniques for directly interfacing RSFQ digital circuits with semiconductor electronics are disclosed using a novel inverting transimpedance digital amplifier in conjunction with a non-inverting transimpedance digital amplifier to create a differential transimpedance digital amplifier that permits direct interfacing between RSFQ and semiconductor electronics.

摘要翻译： 过冷电子设备通常使用快速单通量（RSFQ）数字电路。 RSFQ器件的输出电压太低，即使半导体电子器件被冷却，也不能与半导体电子器件直接接口。 使用新颖的反相跨阻抗数字放大器结合非反相跨阻抗数字放大器公开了将RSFQ数字电路与半导体电子器件直接接口的技术，以产生允许RSFQ和半导体电子器件之间直接接口的差分跨阻抗数字放大器。

公开(公告)号：US08401509B1

公开(公告)日：2013-03-19

申请号：US13588582

申请日：2012-08-17

申请人： Deepnarayan Gupta ,  Amol Inamdar

发明人： Deepnarayan Gupta ,  Amol Inamdar

IPC分类号： H04B1/10

CPC分类号： H04B1/10 ,  H04B1/109 ,  H04B1/525 ,  H04B7/15585 ,  H04L27/01

摘要： A radio frequency receiver subject to a large in-band interferor employs active cancellation with coarse and at least one cancellation signals, each with a respective radio frequency combiner, in order to increase the effective dynamic range of the receiver for weak signals of interest. One or both can be digitally synthesized. This is particularly applicable for co-site interference, whereby the interfering transmit signal is directly accessible. A similar system and method may also be applied to external interferors such as those produced by deliberate or unintentional jamming signals, or by strong multipath signals. An adaptive algorithm may be used for dynamic delay and gain matching. In a preferred embodiment, a hybrid technology hybrid temperature system incorporates both superconducting and semiconducting components to achieve enhanced broadband performance.

公开(公告)号：US20090002014A1

公开(公告)日：2009-01-01

申请号：US11824419

申请日：2007-06-29

申请人： Deepnarayan Gupta ,  Amol Inamdar

发明人： Deepnarayan Gupta ,  Amol Inamdar

IPC分类号： H03K19/195 ,  H03K17/92

CPC分类号： H03K19/01 ,  H03F19/00 ,  H03K11/00 ,  H03K17/92 ,  H03K19/1954

摘要： Supercooled electronics often use Rapid Single Flux Quantum (RSFQ) digital circuits. The output voltages from RSFQ devices are too low to be directly interfaced with semiconductor electronics, even if the semiconductor electronics are cooled. Techniques for directly interfacing RSFQ digital circuits with semiconductor electronics are disclosed using a novel inverting transimpedance digital amplifier in conjunction with a non-inverting transimpedance digital amplifier to create a differential transimpedance digital amplifier that permits direct interfacing between RSFQ and semiconductor electronics.

公开(公告)号：US08301104B1

公开(公告)日：2012-10-30

申请号：US13292057

申请日：2011-11-08

申请人： Deepnarayan Gupta ,  Amol Inamdar

发明人： Deepnarayan Gupta ,  Amol Inamdar

IPC分类号： H04B1/10

CPC分类号： H04B1/10 ,  H04B1/525

摘要： A system and method for receiving a signal, comprising an input adapted to receive a radio frequency signal having a strong interferer; a signal generator, adapted to produce a representation of the interferer as an analog signal generated based on an oversampled digital representation thereof; and a component adapted to cancel the strong interferer from radio frequency signal based on the generated analog signal to produce a modified radio frequency signal substantially absent the interferer. The system typically has a nonlinear component that either saturates or produces distortion from the strong interferer, which is thereby reduced. The system preferably employs high speed circuits which digitize and process radio frequency signals without analog mixers.

摘要翻译： 一种用于接收信号的系统和方法，包括：适于接收具有强干扰源的射频信号的输入; 信号发生器，适于产生干扰源的表示，作为基于其过采样数字表示生成的模拟信号; 以及适于基于所生成的模拟信号从射频信号消除强干扰源以产生基本上不存在干扰源的修改的射频信号的分量。 系统通常具有非线性分量，其从强干扰源饱和或产生失真，从而减少。 该系统优选采用数字化和处理射频信号的高速电路，而不需要模拟混频器。

公开(公告)号：US08188901B1

公开(公告)日：2012-05-29

申请号：US12542585

申请日：2009-08-17

申请人： Amol Inamdar ,  Deepnarayan Gupta

发明人： Amol Inamdar ,  Deepnarayan Gupta

IPC分类号： H03M1/12

CPC分类号： H03M3/458 ,  H03M1/0854 ,  H03M1/12 ,  H03M1/1245 ,  H03M1/68 ,  H03M3/02 ,  H03M3/46

摘要： Superconductor analog-to-digital converters (ADC) offer high sensitivity and large dynamic range. One approach to increasing the dynamic range further is with a subranging architecture, whereby the output of a coarse ADC is converted back to analog and subtracted from the input signal, and the residue signal fed to a fine ADC for generation of additional significant bits. This also requires a high-gain broadband linear amplifier, which is not generally available within superconductor technology. In a preferred embodiment, a distributed digital fluxon amplifier is presented, which also integrates the functions of integration, filtering, and flux subtraction. A subranging ADC design provides two ADCs connected with the fluxon amplifier and subtractor circuitry that would provide a dynamic range extension by about 30-35 dB.

摘要翻译： 超导体模数转换器（ADC）具有高灵敏度和大动态范围。 进一步增加动态范围的一种方法是使用子架构，由此将粗略ADC的输出转换回模拟并从输入信号中减去，并将剩余信号馈送到精细ADC以产生附加有效位。 这也需要高增益宽带线性放大器，这在超导体技术中通常不可用。 在优选实施例中，提出了分布式数字通量放大器，其还集成了积分，滤波和磁通减法的功能。 子阵列ADC设计提供了两个与物理放大器和减法器电路连接的ADC，可提供大约30-35 dB的动态范围扩展。

公开(公告)号：US20130004180A1

公开(公告)日：2013-01-03

申请号：US13602474

申请日：2012-09-04

申请人： Deepnarayan Gupta ,  Oleg Mukhanov

发明人： Deepnarayan Gupta ,  Oleg Mukhanov

IPC分类号： H04B10/00

CPC分类号： H04B10/25752 ,  H04B10/2575 ,  H04B10/40 ,  H04B10/5561 ,  H04B10/697 ,  H04L27/2096

摘要： A transceiver architecture for wireless base stations wherein a broadband radio frequency signal is carried between at least one tower-mounted unit and a ground-based unit via optical fibers, or other non-distortive media, in either digital or analog format. Each tower-mounted unit (for both reception and transmission) has an antenna, analog amplifier and an electro-optical converter. The ground unit has ultrafast data converters and digital frequency translators, as well as signal linearizers, to compensate for nonlinear distortion in the amplifiers and optical links in both directions. In one embodiment of the invention, at least one of the digital data converters, frequency translators, and linearizers includes superconducting elements mounted on a cryocooler.