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1. 发明公开

EP2720611A4 NEURON RECORDING SYSTEM 有权
标题翻译：神经元记录系统
公开(公告)号：EP2720611A4
公开(公告)日：2014-12-03
申请号：EP12801854
申请日：2012-06-19
申请人： UNIV CALIFORNIA
发明人： LO YI-KAI , LIU WENTAI
IPC分类号： A61B5/04 , A61B5/00 , A61B5/0476 , A61B5/0478 , A61B5/0482 , H03F3/45
CPC分类号： A61B5/04001 , A61B5/04012 , A61B5/0476 , A61B5/0478 , A61B5/0482 , A61B5/7203 , A61B5/7225 , H03F3/45192 , H03F3/45475 , H03F3/45928 , H03F2200/165 , H03F2200/168 , H03F2200/171 , H03F2200/408 , H03F2203/45362 , H03F2203/45512 , H03F2203/45528 , H03F2203/45544 , H03F2203/45631 , H03F2203/45686 , H03F2203/45726

2. 发明公开

EP2522073A1 BROADBAND ANALOG RADIO-FREQUENCY COMPONENTS 审中-公开
标题翻译：模拟宽带无线频率成分
公开(公告)号：EP2522073A1
公开(公告)日：2012-11-14
申请号：EP11790125.6
申请日：2011-02-11
申请人： Newlans, Inc. , Gupta, Dev V. , Lai, Zhiguo
发明人： GUPTA, Dev, V. , LAI, Zhiguo
IPC分类号： H03F3/45 , H03H11/04 , H03H11/24 , H04L25/03
CPC分类号： H03F3/45183 , H03F1/223 , H03F3/19 , H03F3/45188 , H03F3/45197 , H03F3/45201 , H03F2200/264 , H03F2200/36 , H03F2203/45318 , H03F2203/45374 , H03F2203/45644 , H03F2203/45686 , H03F2203/45702 , H03H7/24 , H03H7/25 , H03H7/482 , H03H7/487 , H03H11/1256 , H03H11/53 , H03H2210/017 , H03H2210/021 , H03H2210/028 , H03H2210/036 , H03H2210/04
摘要： Broadband analog radio-frequency devices can be used to create building blocks for scalable analog signal processors that operate over bandwidths of 50 MHz to 20 GHz or more. Example devices include integrators (transconductors), digitally controlled attenuators, buffers, and scalable summers implemented using deep sub-micron CMOS technology. Because the devices are implemented in CMOS, the ratio of trace/component size to signal wavelength is about the same as that of low-frequency devices implemented in printed circuit boards. Combining this scaling with high gain/high bandwidth enables implementation of feedback and programmability for broadband analog signal processing.

3. 发明公开

EP1739826A1 Ultra low-frequency response, dc-blocked low-noise amplifier 有权转让
标题翻译： Ra ang ang ang ang ang ang ang ang ang em em em em em
公开(公告)号：EP1739826A1
公开(公告)日：2007-01-03
申请号：EP06253348.4
申请日：2006-06-27
申请人： The Alfred E Mann Foundation for Scientific Research
发明人： Ananth, Ravi S.
IPC分类号： H03F3/45 , H03F1/38 , H03F1/26 , H03F3/187 , H03F3/00
CPC分类号： H03F3/187 , H03F1/26 , H03F1/38 , H03F3/005 , H03F3/45183 , H03F3/45475 , H03F3/45968 , H03F2200/294 , H03F2200/372 , H03F2203/45156 , H03F2203/45296 , H03F2203/45332 , H03F2203/45512 , H03F2203/45544 , H03F2203/45546 , H03F2203/45631 , H03F2203/45632 , H03F2203/45686
摘要： An amplifier circuit is disclosed that allows for practical integrated circuit implementation of a dc-blocked, low-noise differential amplifier (10) capable of amplifying ultra low-frequency signals and amplitudes ranging upwards of a few microvolts. DC-blocking capacitors (68,69) having a capacitance value close to that of the effective input capacitance of the low-noise amplifier's inputs (22,24) can be used by incorporating a positive feedback mechanism that tracks any variations in the amplifier gain or integrated circuit's technology process and lowers or cancels the input parasitic capacitances (64,66). Advantageously, the parasitic capacitance of transistors, typically field effect transistors, located on an integrated circuit chip are used in the feedback mechanism. This reduces the capacitive voltage division loss of the signal at the input of the amplifier while still allowing for the use of very small values of dc-blocking capacitance. No other active elements other than the amplifier itself are required to attain a low area, integrated circuit implementation of a dc-blocked, yet ultra low-frequency high pass filtered, low-noise amplifier (10).
摘要翻译：公开了一种放大器电路，其允许实现能够放大超低频信号和幅度在几微伏之上的幅度的直流阻塞低噪声差分放大器（10）的实际集成电路。具有接近于低噪声放大器的输入（22,24）的有效输入电容的电容值的隔离电容器（68,69）可以通过结合一个正反馈机制来使用，该正反馈机制跟踪放大器增益中的任何变化或集成电路的技术过程，并降低或消除输入寄生电容（64,66）。有利地，在反馈机制中使用位于集成电路芯片上的晶体管（通常为场效应晶体管）的寄生电容。这降低了在放大器输入端的信号的电容分压损耗，同时仍允许使用非常小的直流阻塞电容值。除了放大器本身之外，不需要其他有源元件来实现直流阻塞但是超低频高通滤波的低噪声放大器（10）的低面积集成电路实现。

4. 发明公开

EP2974031A1 TECHNIQUES TO REDUCE HARMONIC DISTORTIONS OF IMPEDANCE ATTENUATORS FOR LOW-POWER WIDEBAND HIGH-RESOLUTON DACS 审中-公开
标题翻译：方法来减少和谐阻抗缓冲元件用于低功率宽带DACS高分辨率扭曲
公开(公告)号：EP2974031A1
公开(公告)日：2016-01-20
申请号：EP14715771.3
申请日：2014-03-12
申请人： Qualcomm Incorporated
发明人： SONG, Tongyu , LEE, Sang Min , KONG, Derui , SEO, Dongwon
IPC分类号： H03M1/06 , H03F3/45 , H03M1/74
CPC分类号： H03M1/74 , H03F3/19 , H03F3/211 , H03F3/245 , H03F3/45192 , H03F3/4565 , H03F3/72 , H03F2203/45466 , H03F2203/45512 , H03F2203/45562 , H03F2203/45631 , H03F2203/45634 , H03F2203/45644 , H03F2203/45686 , H03F2203/45701 , H03F2203/45702 , H03F2203/7236 , H03M1/0614
摘要： A digital-to-analog converter (DAC) includes, in part, a multitude of input stages that supply currents to a pair of current summing nodes in response to a digital signal, and an impedance attenuator coupled between the current summing nodes and the output of the DAC. The impedance attenuator is adapted, among other function, to increase the range of impedances of the output load, to account for changes in the output load impedance due to variations in the process, voltage and temperature, and to decouple the impedances seen by the summing nodes from the load impedance. The impedance attenuator further includes a differential-input, differential-output amplifier with programmable common-mode gain bandwidth to control the harmonic distortion of the amplifier. The impedance attenuator optionally includes a pair of cross-coupled capacitors to control the harmonic distortion of the amplifier.

5. 发明公开

EP2961063A1 VARIABLE GAIN TRANSIMPEDANCE AMPLIFIER 审中-公开
标题翻译： TRANSIMPEDANZVERSTÄRKERMIT VARIABLERVERSTÄRKUNG
公开(公告)号：EP2961063A1
公开(公告)日：2015-12-30
申请号：EP15172191.7
申请日：2015-06-15
申请人： NXP B.V.
发明人： Brekelmans, Johannes, Hubertus, Antonius
IPC分类号： H03F3/195 , H03F1/34 , H03F3/08 , H03F3/45 , H03G1/00 , H03H11/12
CPC分类号： H03G3/18 , H03F1/34 , H03F3/087 , H03F3/195 , H03F3/45475 , H03F2200/336 , H03F2200/451 , H03F2203/45116 , H03F2203/45512 , H03F2203/45514 , H03F2203/45522 , H03F2203/45526 , H03F2203/45528 , H03F2203/45534 , H03F2203/45536 , H03F2203/45562 , H03F2203/45591 , H03F2203/45594 , H03F2203/45616 , H03F2203/45618 , H03F2203/45644 , H03F2203/45686 , H03F2203/45702 , H03G1/0088
摘要： Embodiments of variable gain transimpedance amplifiers are described. In an embodiment, the variable gain transimpedance amplifier may include an amplifier coupled to an adjustable gain feedback network, the adjustable gain feedback network including a selectable set of Resistor-Capacitor (RC) branches, each RC branch having one or more unit RC elements, each unit RC element being comprised of a unit resistor and a unit capacitor arranged in parallel.
摘要翻译：描述可变增益互阻放大器的实施例。在一个实施例中，可变增益跨阻抗放大器可以包括耦合到可调增益反馈网络的放大器，所述可调增益反馈网络包括可选择的电阻 - 电容（RC）分支组，每个RC分支具有一个或多个单元RC元件，每个单元RC元件由单元电阻器和并联布置的单位电容器组成。

6. 发明公开

EP2720611A2 NEURON RECORDING SYSTEM 有权
标题翻译：神经元记录系统
公开(公告)号：EP2720611A2
公开(公告)日：2014-04-23
申请号：EP12801854.6
申请日：2012-06-19
申请人： The Regents of the University of California
发明人： LO, Yi-kai , LIU, Wentai
IPC分类号： A61B5/04
CPC分类号： A61B5/04001 , A61B5/04012 , A61B5/0476 , A61B5/0478 , A61B5/0482 , A61B5/7203 , A61B5/7225 , H03F3/45192 , H03F3/45475 , H03F3/45928 , H03F2200/165 , H03F2200/168 , H03F2200/171 , H03F2200/408 , H03F2203/45362 , H03F2203/45512 , H03F2203/45528 , H03F2203/45544 , H03F2203/45631 , H03F2203/45686 , H03F2203/45726
摘要： A neuron recording system was provided. By using the gain-boosted topology, the amplifier input impedance can be increased while simultaneously reducing the noise. The system can be configured to record local field potentials (LFPs) and neuron spikes, respectively, with low-power consumption. With the flexible digital controller module (DCM), any subset of the recording channels can be activated for recording with independent sampling rate at each channel. A wireless interface to transmit recorded neuron data and an on-chip neuron processor to perform real-time signal processing can be incorporated in the system.
摘要翻译：提供了神经元记录系统。通过使用增益放大拓扑结构，可以提高放大器的输入阻抗，同时降低噪声。该系统可配置为分别记录本地场电位（LFP）和神经元尖峰，并具有低功耗。通过灵活的数字控制器模块（DCM），可以激活任何录制通道的子集，以便在每个通道上以独立的采样率进行录制。用于传输记录的神经元数据的无线接口和片上神经元处理器以执行实时信号处理可以被包含在系统中。

7. 发明授权

EP1739826B1 Ultra low-frequency response, dc-blocked low-noise amplifier 有权转让
标题翻译：低噪声DC阻断放大器具有超低频率响应
公开(公告)号：EP1739826B1
公开(公告)日：2013-10-23
申请号：EP06253348.4
申请日：2006-06-27
申请人： Alfred E Mann Foundation for Scientific Research
发明人： Ananth, Ravi S.
IPC分类号： H03F3/45 , H03F1/38 , H03F1/26 , H03F3/187 , H03F3/00
CPC分类号： H03F3/187 , H03F1/26 , H03F1/38 , H03F3/005 , H03F3/45183 , H03F3/45475 , H03F3/45968 , H03F2200/294 , H03F2200/372 , H03F2203/45156 , H03F2203/45296 , H03F2203/45332 , H03F2203/45512 , H03F2203/45544 , H03F2203/45546 , H03F2203/45631 , H03F2203/45632 , H03F2203/45686

8. 发明公开

EP1589660A2 Frequency output circuit 审中-公开
标题翻译： Frequenzausgabeschaltung
公开(公告)号：EP1589660A2
公开(公告)日：2005-10-26
申请号：EP05008648.7
申请日：2005-04-20
申请人： Hitachi Ltd.
发明人： Ando, Ryo, c/o Hitachi, Ltd.
IPC分类号： H03K17/16
CPC分类号： H03F3/45085 , G01F15/00 , G01F15/068 , H03F2200/114 , H03F2203/45674 , H03F2203/45686
摘要： Unwanted electromagnetic waves are eliminated in a frequency output circuit comprising an open-collector output terminal whereby radio noise can be reduced. A frequency output circuit (10) comprises an open-collector transistor Q4 with an open-collector output terminal connected to a pull-up resistor Rf connected to an external power supply Vex. A current limiting circuit (16) limits a current through the output terminal such that a high potential and a low potential of the output waveform of a frequency signal outputted by an output circutit (12) are smoothly switched. The current limiting circuit (16) is formed by a differential pair circuit of transistors and each with a resistor provided in the emitter thereof, and a current mirror circuit comprising an open-collector transistor, for example.
摘要翻译：在包括开路集电极输出端的频率输出电路中消除了不需要的电磁波，从而可以降低无线电噪声。频率输出电路（10）包括开集电极晶体管Q4，集电极开路输出端子连接到连接到外部电源Vex的上拉电阻器Rf。电流限制电路（16）限制通过输出端子的电流，使得输出电路（12）输出的频率信号的输出波形的高电位和低电位平滑地切换。电流限制电路（16）由晶体管的差分对电路形成，并且每个具有设置在其发射极中的电阻器，以及包括集电极晶体管的电流镜电路。

9. 发明公开

EP0322519A3 Operational amplifier utilizing trimmable current sources 失效
标题翻译：运行放大器利用可逆电流源
公开(公告)号：EP0322519A3
公开(公告)日：1990-02-14
申请号：EP88116085.7
申请日：1988-09-29
申请人： MOTOROLA, INC.
发明人： Vyne, Robert Leonard , Susak, David M. , Davis, William Folsom
IPC分类号： H03F3/26 , H03F3/45
CPC分类号： H03F3/265 , H03F3/45179 , H03F2203/45048 , H03F2203/45394 , H03F2203/45648 , H03F2203/45686 , H03F2203/45696
摘要： The first and second inputs of an operational amplifier (2) are each coupled to a trimmable JFET current source. Each JFET current source (J1 or J3) comprises a first JFET having a gate coupled to a first source of supply voltage, a source coupled via an adjustable resistor (R T1 , R T2 ) to the first source of supply voltage, and a drain coupled respectively to either the first or second input of the operational amplifier. The drain terminal of each JFET is coupled to the source terminal of an additional JFET (J2 or J4) which has its drain coupled to a second source of supply voltage and its gate coupled to an input potential.
摘要翻译：运算放大器（2）的第一和第二输入端分别耦合到可调整的JFET电流源。每个JFET电流源（J1或J3）包括第一JFET，其具有耦合到第一电源电压源的栅极，经由可调电阻器（RT1，RT2）耦合到第一电源电压源的源极和分别耦合的漏极到运算放大器的第一或第二输入。每个JFET的漏极端子耦合到附加JFET（J2或J4）的源极端子，其漏极耦合到第二电源电压源，其栅极耦合到输入电位。

10. 发明公开

EP3384687A1 TRANS-IMPEDANCE AMPLIFIER FOR ULTRASOUND DEVICE AND RELATED APPARATUS AND METHODS 有权
公开(公告)号：EP3384687A1
公开(公告)日：2018-10-10
申请号：EP16871463.2
申请日：2016-12-01
申请人： Butterfly Network, Inc.
发明人： CHEN, Kailiang , FIFE, Keith, G. , SANCHEZ, Nevada, J. , CASPER, Andrew, J. , RALSTON, Tyler, S.
IPC分类号： H04R31/00 , B06B3/00 , B06B1/00
CPC分类号： H03F3/16 , A61B5/6801 , A61B8/4444 , A61B8/5207 , G01S7/52025 , H03F1/086 , H03F3/45183 , H03F2200/408 , H03F2200/555 , H03F2203/45471 , H03F2203/45504 , H03F2203/45631 , H03F2203/45634 , H03F2203/45646 , H03F2203/45648 , H03F2203/45674 , H03F2203/45686 , H03F2203/45692 , H03F2203/45726
摘要： A variable current trans-impedance amplifier (TIA) for an ultrasound device is described. The TIA may be coupled to an ultrasonic transducer to amplify an output signal of the ultrasonic transducer representing an ultrasound signal received by the ultrasonic transducer. During acquisition of the ultrasound signal by the ultrasonic transducer, one or more current sources in the TIA may be varied.

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