中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

16 records (took 0.026 seconds)

    Analog-to-digital converter
    1.
    发明授权
    Analog-to-digital converter 有权
    模数转换器

    公开(公告)号：US07834796B2

    公开(公告)日：2010-11-16

    申请号：US12162777

    申请日：2007-02-02

    Applicant: Yong Ping Xu ,  Honglei Wu

    Inventor： Yong Ping Xu ,  Honglei Wu

    IPC: H03M1/12

    CPC classification number: H03M1/466

    Abstract: An analog-to-digital converter (ADC) and a battery operated electronic device comprising the ADC. The ADC comprising an input switch; an array of binary-weighted capacitors, the array of capacitors receiving the input voltage signal via the input switch in an on state of the input switch; a plurality of switches, each switch connected in series with a respective one of the capacitors at an opposite side compared to the input switch, wherein a VDD signal is applied to each switch in one switching state and ground in another switching state; a comparator having as one input a voltage from the input switch side of the array of capacitors and as another input a voltage of VDD/2; and a switch control unit coupled to an output of the comparator for controlling the switches based on the output from the comparator.

    Abstract translation: 一个模数转换器（ADC）和一个包含该ADC的电池供电的电子设备。 ADC包括输入开关; 一组二进制加权电容器，该电容器阵列通过输入开关在输入开关的导通状态下接收输入电压信号; 多个开关，与输入开关相比，每个开关与相应的一个电容器串联连接，其中VDD信号以一个开关状态施加到每个开关，并以另一个开关状态接地; 比较器具有来自电容器阵列的输入开关侧的电压作为一个输入，并且作为另一输入的VDD / 2的电压; 以及耦合到比较器的输出的开关控制单元，用于基于比较器的输出来控制开关。

    Amplifier
    2.
    发明授权
    Amplifier 有权
    放大器

    公开(公告)号：US07816988B2

    公开(公告)日：2010-10-19

    申请号：US11703546

    申请日：2007-02-05

    Applicant: Honglei Wu ,  Yong-Ping Xu

    Inventor： Honglei Wu ,  Yong-Ping Xu

    IPC: H03F3/45

    CPC classification number: H03F3/45201 ,  H03F1/26 ,  H03F3/45659 ,  H03F3/45672 ,  H03F2200/372 ,  H03F2200/513 ,  H03F2203/45418 ,  H03F2203/45454

    Abstract: An apparatus having means for amplifying a differential voltage signal. The means for amplifying includes at least an input stage and an output stage. The output stage includes means for preventing a trade off between a reduction in noise of an output voltage signal and an increase in a dynamic range of the output voltage signal.

    Abstract translation: 一种具有用于放大差分电压信号的装置的装置。 用于放大的装置至少包括输入级和输出级。 输出级包括用于防止输出电压信号的噪声降低和输出电压信号的动态范围增加之间的折衷的装置。

    ANALOG-TO-DIGITAL CONVERTER
    5.
    发明申请
    ANALOG-TO-DIGITAL CONVERTER 有权
    模拟数字转换器

    公开(公告)号：US20090167587A1

    公开(公告)日：2009-07-02

    申请号：US12162777

    申请日：2007-02-02

    Applicant: Yong Ping Xu ,  Honglei Wu

    Inventor： Yong Ping Xu ,  Honglei Wu

    IPC: H03M1/12

    CPC classification number: H03M1/466

    Abstract: An analog-to-digital converter (ADC) and a battery operated electronic device comprising the ADC. The ADC comprising an input switch; an array of binary-weighted capacitors, the array of capacitors receiving the input voltage signal via the input switch in an on state of the input switch; a plurality of switches, each switch connected in series with a respective one of the capacitors at an opposite side compared to the input switch, wherein a VDD signal is applied to each switch in one switching state and ground in another switching state; a comparator having as one input a voltage from the input switch side of the array of capacitors and as another input a voltage of VDD/2; and a switch control unit coupled to an output of the comparator for controlling the switches based on the output from the comparator.

    Abstract translation: 一个模数转换器（ADC）和一个包含该ADC的电池供电的电子设备。 ADC包括输入开关; 一组二进制加权电容器，该电容器阵列通过输入开关在输入开关的导通状态下接收输入电压信号; 多个开关，与输入开关相比，每个开关与相应的一个电容器串联连接，其中VDD信号以一个开关状态施加到每个开关，并以另一个开关状态接地; 比较器具有来自电容器阵列的输入开关侧的电压作为一个输入，并且作为另一输入的VDD / 2的电压; 以及耦合到比较器的输出的开关控制单元，用于基于比较器的输出来控制开关。

    Cancellation of anti-resonance in resonators
    6.
    发明授权
    Cancellation of anti-resonance in resonators 有权
    在谐振器中消除反共振

    公开(公告)号：US07965157B2

    公开(公告)日：2011-06-21

    申请号：US11996252

    申请日：2005-07-20

    Applicant: Yong Ping Xu ,  Rui Yu

    Inventor： Yong Ping Xu ,  Rui Yu

    IPC: H03H9/02 ,  H03H9/54 ,  H03H9/64 ,  H03M3/02 ,  H04B14/06

    CPC classification number: H03H9/46 ,  H03M3/322 ,  H03M3/404 ,  H03M3/458 ,  H04B14/06

    Abstract: Briefly, in accordance with one embodiment of the invention, a resonator such as an electromechanical resonator may be coupled with a cancellation network to reduce and/or cancel an anti-resonance effect in the resonator, which may be due to, for example, a static capacitance inherent in the resonator. Cancellation of an anti resonance effect from the resonator response may allow a resonance effect of the resonator to be a predominant effect to allow the resonator to be utilized as a bandpass filter having a relatively higher Q, for example in a bandpass sigma-delta modulator that may be utilized in a digital RF receiver.

    Abstract translation: 简而言之，根据本发明的一个实施例，诸如机电谐振器的谐振器可以与消除网络耦合以减少和/或消除谐振器中的抗共振效应，这可能是由于例如 谐振器固有的静态电容。 从谐振器响应消除反共振效应可以允许谐振器的共振效应是主要效应，以允许谐振器被用作具有相对较高Q的带通滤波器，例如在带通Σ-Δ调制器 这可以用在数字RF接收机中。

    SYSTEM AND METHOD FOR BANDPASS SIGMA-DELTA MODULATION
    8.
    发明申请
    SYSTEM AND METHOD FOR BANDPASS SIGMA-DELTA MODULATION 有权
    BANDPASS SIGMA-DELTA调制系统与方法

    公开(公告)号：US20100259431A1

    公开(公告)日：2010-10-14

    申请号：US12672348

    申请日：2008-08-11

    Applicant: Rui Yu ,  Yong Ping Xu

    Inventor： Rui Yu ,  Yong Ping Xu

    IPC: H03M3/00

    CPC classification number: H03M3/408 ,  H03M3/434 ,  H03M3/454

    Abstract: The present invention relates broadly to a system and method for bandpass sigma-delta modulation. The continuous time bandpass sigma-delta modulator comprises an electromechanical filter, a quantizer coupled to an output from the electromechanical filter; and a feedback circuit coupled between an output from the quantizer and an input of the electromechanical filter.

    Abstract translation: 本发明广泛地涉及用于带通Σ-Δ调制的系统和方法。 连续时间带通Σ-Δ调制器包括机电滤波器，耦合到机电滤波器的输出的量化器; 以及耦合在量化器的输出和机电滤波器的输入之间的反馈电路。

    Bandpass sigma-delta modulator
    9.
    再颁专利
    Bandpass sigma-delta modulator 有权
    带通Σ-Δ调制器

    公开(公告)号：USRE41518E1

    公开(公告)日：2010-08-17

    申请号：US11496085

    申请日：2006-07-27

    Applicant: Yong-Ping Xu

    Inventor： Yong-Ping Xu

    IPC: H03M3/00 ,  H04B14/06

    CPC classification number: H03M3/404 ,  H03H7/01 ,  H03M3/344 ,  H03M3/348

    Abstract: A bandpass sigma-delta modulator using acoustic resonators or micro-mechanical resonators. In order to improve resolution at high frequencies, acoustic resonators or micro-mechanical resonators are utilized in a sigma-delta modulator instead of electronic resonators. The quantized output is fed back using a pair of D/A converters to an input summation device. In fourth order devices, the feed back is to two summation devices in series. Such a sigma-delta modulator is usable in a software defined radio cellular telephone system and in other applications where high-frequency and high-resolution A/D conversion is required.

    Abstract translation: 使用声谐振器或微机械谐振器的带通Σ-Δ调制器。 为了提高高频分辨率，在Σ-Δ调制器中代替电子谐振器使用声谐振器或微机械谐振器。 量化输出使用一对D / A转换器反馈到输入求和装置。 在四阶装置中，反馈是串联的两个求和装置。 这种Σ-Δ调制器可用于软件定义的无线电蜂窝电话系统以及需要高频和高分辨率A / D转换的其它应用中。

Patent Agency Ranking