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    Method And Apparatus For Nonlinear Filtering And For Mitigation of Interference
    2.
    发明申请
    Method And Apparatus For Nonlinear Filtering And For Mitigation of Interference 审中-公开

    公开(公告)号：US20190215005A1

    公开(公告)日：2019-07-11

    申请号：US16265363

    申请日：2019-02-01

    Applicant: Alexei V. Nikitin

    Inventor： Alexei V. Nikitin

    IPC: H03M3/00 ,  H03H21/00 ,  H03H7/12

    CPC classification number: H03M3/368 ,  H03M3/422 ,  H03M3/43 ,  H03M3/438 ,  H03M3/456 ,  H03M3/458

    Abstract: Method and apparatus for nonlinear signal processing include mitigation of outlier noise in the process of analog-to-digital conversion and adaptive real-time signal conditioning, processing, analysis, quantification, comparison, and control. Methods, processes and apparatus for real-time measuring and analysis of variables include statistical analysis and generic measurement systems and processes which are not specially adapted for any specific variables, or to one particular environment. Methods and corresponding apparatus for mitigation of electromagnetic interference, for improving properties of electronic devices, and for improving and/or enabling coexistence of a plurality of electronic devices include post-processing analysis of measured variables and post-processing statistical analysis.

    Frequency selective circuit configured to convert an analog input signal to a digital output signal
    5.
    发明授权
    Frequency selective circuit configured to convert an analog input signal to a digital output signal 有权
    频率选择电路被配置为将模拟输入信号转换成数字输出信号

    公开(公告)号：US09543978B2

    公开(公告)日：2017-01-10

    申请号：US14769164

    申请日：2013-02-21

    Applicant: Telefonaktiebolaget L M Ericsson (publ)

    Inventor： Sven Mattisson ,  Martin Anderson ,  Pietro Andreani ,  Mattias Palm

    IPC: H03M3/00

    CPC classification number: H03M3/464 ,  H03M3/344 ,  H03M3/368 ,  H03M3/454

    Abstract: A frequency selective circuit configured to convert an analog input signal to a digital output signal comprises an analog-to-digital converter (44) to generate the digital output signal of the circuit based on an analog input signal to the analog-to-digital converter (44); a digital-to-analog converter (46, 47) to generate an analog feedback signal based on the digital output signal from the analog-to-digital converter (44), and an analog filter arranged to generate the analog input signal to the analog-to-digital converter based on the analog feedback signal and an analog input signal to the circuit. The analog filter comprises at least two integrators (41, 42) in series, each having a feedback path comprising the analog-to-digital converter (44) in cascade with a digital-to-analog converter (46, 47), so that the overall noise transfer function of the circuit has at least two zeros in addition to zeros in the noise transfer function of the analog-to-digital converter.

    Abstract translation: 被配置为将模拟输入信号转换为数字输出信号的频率选择电路包括模数转换器（44），用于根据模数转换器的模拟输入信号产生电路的数字输出信号 （44）; 数模转换器（46,47），用于基于来自模数转换器（44）的数字输出信号产生模拟反馈信号;以及模拟滤波器，被配置为产生模拟输入信号 基于模拟反馈信号的数模转换器和到电路的模拟输入信号。 模拟滤波器包括串联的至少两个积分器（41,42），每个具有包括与数模转换器（46,47）级联的模数转换器（44）的反馈路径，使得 除了在模数转换器的噪声传递函数中的零之外，电路的总噪声传递函数具有至少两个零。

    Analog front-end circuit for measurement
    6.
    发明授权
    Analog front-end circuit for measurement 有权
    用于测量的模拟前端电路

    公开(公告)号：US09173107B2

    公开(公告)日：2015-10-27

    申请号：US13743830

    申请日：2013-01-17

    Applicant: YOKOGAWA ELECTRIC CORPORATION

    Inventor： Kazuhiro Shimizu ,  Tomonori Komachi ,  Kazuhide Yasuda ,  Sadao Mori

    IPC: H04W24/00 ,  H03M3/00 ,  H04N1/00 ,  G01D3/02 ,  H03M1/08

    CPC classification number: H04W24/00 ,  G01D3/022 ,  G01D21/00 ,  H03M1/0827 ,  H03M3/368 ,  H04N1/0083

    Abstract: An analog front-end circuit for measurement used as an interface between a sensor and a control device includes: an isolated part including at least an AD conversion circuit configured to serve as an interface to the sensor; a non-isolated part including at least a control circuit configured to serve as an interface to the control device; and an isolated communication unit configured to perform isolated half-duplex communication between the isolated part and the non-isolated part. The control circuit is configured to transmit an AD conversion instruction to the AD conversion circuit after providing setting for measurement to the isolated part via the isolated communication unit, obtain a result of AD conversion by the AD conversion circuit from the isolated part via the isolated communication unit, and transfer the obtained AD conversion result to the control device.

    Abstract translation: 用作传感器和控制装置之间的接口的用于测量的模拟前端电路包括：隔离部分，至少包括被配置为用作与传感器的接口的AD转换电路; 至少包括被配置为用作与所述控制装置的接口的控制电路的非隔离部分; 以及隔离通信单元，被配置为在所述隔离部分和所述非隔离部分之间执行隔离的半双工通信。 该控制电路被配置为在通过隔离通信单元向隔离部分提供测量设置之后，向AD转换电路发送AD转换指令，经由隔离通信从隔离部分获得AD转换电路的结果 单位，并将获得的AD转换结果传送到控制装置。

    DELTASIGMA D/A CONVERTER, SIGNAL PROCESSING CIRCUIT INCLUDING THE SAME, AND ELECTRONIC APPARATUS
    7.
    发明申请
    DELTASIGMA D/A CONVERTER, SIGNAL PROCESSING CIRCUIT INCLUDING THE SAME, AND ELECTRONIC APPARATUS 有权
    DELTASIGMA D / A转换器，包括其的信号处理电路和电子设备

    公开(公告)号：US20150280735A1

    公开(公告)日：2015-10-01

    申请号：US14674523

    申请日：2015-03-31

    Applicant: ROHM CO., LTD.

    Inventor： Kinji ITO

    IPC: H03M3/00 ,  H04R3/00 ,  H03M1/06

    CPC classification number: H03M3/502 ,  H03M1/0631 ,  H03M3/368 ,  H03M7/3037 ,  H04R3/00 ,  H04R2499/13

    Abstract: A ΔΣ D/A converter for converting a digital input data to an analog output signal, includes: a ΔΣ modulator configured to generate a first data by ΔΣ-modulating the digital input data; a digital filter configured to generate a second data by smoothing the first data; and a D/A converter configured to convert the second data to the analog output signal.

    Abstract translation: A＆Dgr＆＆ D / A转换器，用于将数字输入数据转换为模拟输出信号，包括：＆Dgr;＆Sgr; 调制器，被配置为通过＆Dgr＆amp; Sgr-调制数字输入数据生成第一数据; 数字滤波器，被配置为通过平滑所述第一数据来生成第二数据; 以及配置成将第二数据转换成模拟输出信号的D / A转换器。

    Quantization Noise Coupling Delta Sigma ADC with a Delay in the Main DAC Feedback
    8.
    发明申请
    Quantization Noise Coupling Delta Sigma ADC with a Delay in the Main DAC Feedback 有权
    量化噪声耦合ΔΣADC在主DAC反馈中具有延迟

    公开(公告)号：US20140368365A1

    公开(公告)日：2014-12-18

    申请号：US14301948

    申请日：2014-06-11

    Applicant: Microchip Technology Incorporated

    Inventor： Vincent Quiquempoix ,  Fabien Vaucher

    IPC: H03M3/00

    CPC classification number: H03M3/39 ,  H03M3/30 ,  H03M3/368 ,  H03M3/496

    Abstract: A delta-sigma modulator has a first summing point subtracting a first feedback signal from an input signal and forwarding a result to a transfer function, a second summing point adding an output signal from said transfer function to the input signal and subtracting a second feedback signal, a first integrator receiving an output signal from the second summing point, a quantizer receiving an output signal from the integrator and generating an output bitstream, and a digital-to-analog converter receiving the bitstream, wherein the first and second feedback signal are the output signal from said digital-to-analog converter delayed by a one sample delay.

    Abstract translation: Δ-Σ调制器具有从输入信号减去第一反馈信号并将结果转发到传递函数的第一求和点，将来自所述传递函数的输出信号加到输入信号的第二求和点，并且减去第二反馈信号 接收来自第二求和点的输出信号的第一积分器，接收来自积分器的输出信号并产生输出比特流的量化器以及接收比特流的数模转换器，其中第一和第二反馈信号是 来自所述数模转换器的输出信号延迟一个采样延迟。

    Sigma-delta analog to digital converter with improved feedback
    9.
    发明授权
    Sigma-delta analog to digital converter with improved feedback 有权
    具有改进反馈的Sigma-delta模数转换器

    公开(公告)号：US08842030B1

    公开(公告)日：2014-09-23

    申请号：US13891974

    申请日：2013-05-10

    Applicant: Nvidia Corporation

    Inventor： Paul Fontaine ,  Abdellatif Bellaouar

    IPC: H03M3/00

    CPC classification number: H03M3/368

    Abstract: A sigma-delta analog-to-digital converter includes an input transconductance stage that provides an analog input current proportional to an analog input voltage and a current summing stage that generates an analog error signal corresponding to a difference between the analog input current and a feedback current. The sigma-delta analog-to-digital converter also includes a forward signal path that processes the analog error signal to provide a digital output signal corresponding to the analog input voltage. Additionally, the sigma-delta analog-to-digital converter includes a feedback path that includes a current steering digital-to-analog converter having both sourcing and sinking current sources, wherein currents provided by the sourcing and sinking current sources are steerable and connected to directly provide the feedback current based on the digital output signal. A sigma-delta analog-to-digital converter operating method is also provided.

    Abstract translation: Σ-Δ模数转换器包括提供与模拟输入电压成比例的模拟输入电流的输入跨导级和产生对应于模拟输入电流和反馈之间的差的模拟误差信号的电流求和级 当前。 Σ-Δ模数转换器还包括正向信号路径，其处理模拟误差信号以提供对应于模拟输入电压的数字输出信号。 另外，Σ-Δ模数转换器包括反馈路径，该反馈路径包括具有源极和吸收电流源的电流转向数模转换器，其中由源极和吸收电流源提供的电流是可控的并连接到 直接提供基于数字输出信号的反馈电流。 还提供了Σ-Δ模数转换器操作方法。

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