利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

10 条记录 (耗时 0.019 秒)

    Amplifier circuit and method for improving the dynamic range thereof
    1.
    发明授权
    Amplifier circuit and method for improving the dynamic range thereof 有权
    放大器电路及其动态范围的改善方法

    公开(公告)号：US08717106B2

    公开(公告)日：2014-05-06

    申请号：US13612805

    申请日：2012-09-12

    申请人： Chi-Yao Yu ,  Siu-Chuang Ivan Lu ,  George Chien

    发明人： Chi-Yao Yu ,  Siu-Chuang Ivan Lu ,  George Chien

    IPC分类号： H03F3/193

    CPC分类号： H03F3/193 ,  H03F3/3022 ,  H03F3/45188 ,  H03F3/72 ,  H03F2200/294 ,  H03F2203/30084 ,  H03F2203/30117 ,  H03F2203/45544

    摘要： The invention provides an amplifier circuit. In one embodiment, the amplifier circuit includes a first class-AB amplifier and a second class-AB amplifier. The first class-AB amplifier amplifies an input signal to generate the first output signal. The second class-AB amplifier amplifies the first output signal to generate a final output signal on an output node. When the power of the input signal is greater than a threshold level, the second class-AB amplifier is in a turned-off state during a turned-on duration period of the first class-AB amplifier, and the first class-AB amplifier is in a turned-off state during a turned-on duration period of the second-class AB amplifier.

    摘要翻译： 本发明提供一种放大器电路。 在一个实施例中，放大器电路包括第一AB类放大器和第二AB类放大器。 第一类AB放大器放大输入信号以产生第一输出信号。 第二类AB放大器放大第一输出信号以在输出节点上产生最终的输出信号。 当输入信号的功率大于阈值电平时，第二AB类放大器在第一AB类放大器的接通持续时间段期间处于关断状态，并且第一AB类放大器是 在二级AB放大器的接通持续时间期间处于关断状态。

    RECEIVER
    2.
    发明申请
    RECEIVER 有权
    接收器

    公开(公告)号：US20130188755A1

    公开(公告)日：2013-07-25

    申请号：US13614269

    申请日：2012-09-13

    申请人： Siu-Chuang Ivan Lu ,  Chi-Yao Yu ,  Tsung-Han Wu ,  George Chien

    发明人： Siu-Chuang Ivan Lu ,  Chi-Yao Yu ,  Tsung-Han Wu ,  George Chien

    IPC分类号： H04L25/02

    CPC分类号： H04L25/02 ,  H04B1/06 ,  H04B1/30 ,  H04B2001/305

    摘要： A receiver includes a low noise amplifier (LNA), a passive mixer, a passive filter, a baseband processing block and a voltage controller. The LNA receives and amplifies a radio frequency (RF) signal. The passive mixer is coupled to the LNA without any AC coupling capacitance therebetween, and generates an intermediate frequency signal by down-converting the RF signal. The passive filter filters the intermediate frequency signal. The baseband processing block includes a transimpedance amplifier (TIA) and processes the filtered intermediate frequency signal. The voltage controller keeps a first node and a second node of a signal path to be around a common DC voltage, wherein the first node is located between an output terminal of the LNA and an input terminal of the passive mixer, and the second node is located between an output terminal of the passive mixer and an output terminal of the TIA.

    摘要翻译： 接收机包括低噪声放大器（LNA），无源混频器，无源滤波器，基带处理模块和电压控制器。 LNA接收和放大射频（RF）信号。 无源混频器与LNA耦合而无需其间的任何AC耦合电容，并通过对RF信号进行下变频来产生中频信号。 无源滤波器对中频信号进行滤波。 基带处理块包括跨阻放大器（TIA）并处理滤波后的中频信号。 电压控制器将信号路径的第一节点和第二节点保持在公共直流电压周围，其中第一节点位于LNA的输出端和无源混频器的输入端之间，第二节点为 位于无源混频器的输出端子和TIA的输出端子之间。

    Interference-robust receiver for a wireless communication system
    4.
    发明授权
    Interference-robust receiver for a wireless communication system 有权
    用于无线通信系统的干扰鲁棒接收机

    公开(公告)号：US08929848B2

    公开(公告)日：2015-01-06

    申请号：US12612683

    申请日：2009-11-05

    申请人： George Chien ,  Yen-Horng Chen ,  Chi-Yao Yu ,  Lan-Chou Cho ,  Chih-Chun Tang ,  Siu-Chuang Ivan Lu

    发明人： George Chien ,  Yen-Horng Chen ,  Chi-Yao Yu ,  Lan-Chou Cho ,  Chih-Chun Tang ,  Siu-Chuang Ivan Lu

    IPC分类号： H04B1/10 ,  H04B1/28

    CPC分类号： H04B1/28 ,  H04B1/10

    摘要： An interference-robust receiver includes an RF signal processor, a frequency conversion interface and an analog signal processor. The RF signal processor provides an RF signal. The frequency conversion interface includes a passive mixer for generating an intermediate frequency signal by down-converting an in-band part of the RF signal to a passband of a filter and down-converting an out-of-band part of the RF signal to a stopband of the filter. The filter can thus filter the intermediate frequency signal with the passband and the stopband.

    摘要翻译： 干扰鲁棒的接收机包括RF信号处理器，频率转换接口和模拟信号处理器。 RF信号处理器提供RF信号。 频率转换接口包括无源混频器，用于通过将RF信号的带内部分下变频为滤波器的通带并将RF信号的带外部分下变频为 滤波器的阻带。 因此，滤波器可以用通带和阻带对中频信号进行滤波。

    INTERFERENCE-ROBUST RECEIVER FOR A WIRELESS COMMUNICATION SYSTEM
    5.
    发明申请
    INTERFERENCE-ROBUST RECEIVER FOR A WIRELESS COMMUNICATION SYSTEM 有权
    用于无线通信系统的干扰强度接收机

    公开(公告)号：US20100167681A1

    公开(公告)日：2010-07-01

    申请号：US12612683

    申请日：2009-11-05

    申请人： George Chien ,  Yen-Horng Chen ,  Chi-Yao Yu ,  Lan-Chou Cho ,  Chih-Chun Tang ,  Siu-Chuang Ivan Lu

    发明人： George Chien ,  Yen-Horng Chen ,  Chi-Yao Yu ,  Lan-Chou Cho ,  Chih-Chun Tang ,  Siu-Chuang Ivan Lu

    IPC分类号： H04B1/10

    CPC分类号： H04B1/28 ,  H04B1/10

    摘要： An interference-robust receiver includes an RF signal processor, a frequency conversion interface and an analog signal processor. The RF signal processor provides an RF signal. The frequency conversion interface includes a passive mixer for generating an intermediate frequency signal by down-converting an in-band part of the RF signal to a passband of a filter and down-converting an out-of-band part of the RF signal to a stopband of the filter. The filter can thus filter the intermediate frequency signal with the passband and the stopband.

    摘要翻译： 干扰鲁棒的接收机包括RF信号处理器，频率转换接口和模拟信号处理器。 RF信号处理器提供RF信号。 频率转换接口包括无源混频器，用于通过将RF信号的带内部分下变频为滤波器的通带并将RF信号的带外部分下变频为 滤波器的阻带。 因此，滤波器可以用通带和阻带对中频信号进行滤波。

    RECEIVER FOR WIRELESS COMMUNICATION SYSTEM
    6.
    发明申请
    RECEIVER FOR WIRELESS COMMUNICATION SYSTEM 审中-公开
    无线通信系统接收机

    公开(公告)号：US20100279641A1

    公开(公告)日：2010-11-04

    申请号：US12835720

    申请日：2010-07-13

    申请人： Siu-Chuang Ivan Lu ,  George Chien ,  Yen-Horng Chen ,  Chi-Yao Yu ,  Lan-Chou Cho ,  Chih-Chun Tang

    发明人： Siu-Chuang Ivan Lu ,  George Chien ,  Yen-Horng Chen ,  Chi-Yao Yu ,  Lan-Chou Cho ,  Chih-Chun Tang

    IPC分类号： H04B1/06 ,  H03F3/45

    CPC分类号： H04B1/16 ,  H03F1/223 ,  H03F3/193 ,  H03F3/21 ,  H03F3/211 ,  H03F3/45188 ,  H03F3/45475 ,  H03F3/72 ,  H03F2200/165 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2203/45386 ,  H03F2203/7236 ,  H04B1/18 ,  H04B1/28

    摘要： One exemplary receiver for a wireless communication system includes a plurality of signal processing components arranged to generate a receiver output according to a radio frequency (RF) signal. The signal processing components include amplifiers having a class-AB biased amplifier included therein. The signal processing components are disposed in a chip, and the class-AB biased amplifier is an amplifier which processes a signal corresponding to the RF signal before any other amplifier included in the chip. Another exemplary receiver for a wireless communication system includes an RF signal processor and a frequency conversion interface. The RF signal processor is to generate an RF signal, and has a class-AB biased amplifier arranged to apply amplification upon the RF signal. The frequency conversion interface is coupled to the RF signal processor, and used for receiving the RF signal generated from the RF signal processor and generating a down-converted result of the RF signal.

    摘要翻译： 一种用于无线通信系统的示例性接收机包括多个信号处理组件，其被布置为根据射频（RF）信号产生接收机输出。 信号处理部件包括其中包括AB类偏置放大器的放大器。 信号处理部件设置在芯片中，AB类偏置放大器是放大器，其处理与芯片中包括的任何其他放大器之前的RF信号相对应的信号。 用于无线通信系统的另一示例性接收机包括RF信号处理器和频率转换接口。 RF信号处理器将产生RF信号，并且具有被布置为对RF信号施加放大的AB类偏置放大器。 频率转换接口耦合到RF信号处理器，并用于接收从RF信号处理器产生的RF信号并产生RF信号的下变频结果。

    Receiver
    7.
    发明授权
    Receiver 有权
    接收器

    公开(公告)号：US08831551B2

    公开(公告)日：2014-09-09

    申请号：US13614269

    申请日：2012-09-13

    申请人： Siu-Chuang Ivan Lu ,  Chi-Yao Yu ,  Tsung-Han Wu ,  George Chien

    发明人： Siu-Chuang Ivan Lu ,  Chi-Yao Yu ,  Tsung-Han Wu ,  George Chien

    IPC分类号： H04B1/26 ,  H04B1/06 ,  H04L25/02 ,  H04B1/30 ,  H04B1/16

    CPC分类号： H04L25/02 ,  H04B1/06 ,  H04B1/30 ,  H04B2001/305

    摘要： A receiver includes a low noise amplifier (LNA), a passive mixer, a passive filter, a baseband processing block and a voltage controller. The LNA receives and amplifies a radio frequency (RF) signal. The passive mixer is coupled to the LNA without any AC coupling capacitance therebetween, and generates an intermediate frequency signal by down-converting the RF signal. The passive filter filters the intermediate frequency signal. The baseband processing block includes a transimpedance amplifier (TIA) and processes the filtered intermediate frequency signal. The voltage controller keeps a first node and a second node of a signal path to be around a common DC voltage, wherein the first node is located between an output terminal of the LNA and an input terminal of the passive mixer, and the second node is located between an output terminal of the passive mixer and an output terminal of the TIA.

    摘要翻译： 接收机包括低噪声放大器（LNA），无源混频器，无源滤波器，基带处理模块和电压控制器。 LNA接收和放大射频（RF）信号。 无源混频器与LNA耦合而无需其间的任何AC耦合电容，并通过对RF信号进行下变频来产生中频信号。 无源滤波器对中频信号进行滤波。 基带处理块包括跨阻放大器（TIA）并处理滤波后的中频信号。 电压控制器将信号路径的第一节点和第二节点保持在公共直流电压周围，其中第一节点位于LNA的输出端和无源混频器的输入端之间，第二节点为 位于无源混频器的输出端子和TIA的输出端子之间。

    Frequency-selective circuit with mixer module implemented for controlling frequency response, and related signal processing apparatus and method
    9.
    发明授权
    Frequency-selective circuit with mixer module implemented for controlling frequency response, and related signal processing apparatus and method 有权
    具有用于控制频率响应的混频器模块的频率选择电路及相关的信号处理装置和方法

    公开(公告)号：US09130642B2

    公开(公告)日：2015-09-08

    申请号：US12959345

    申请日：2010-12-02

    申请人： Ming-Da Tsai ,  Siu-Chuang Ivan Lu

    发明人： Ming-Da Tsai ,  Siu-Chuang Ivan Lu

    IPC分类号： H04B1/26 ,  H04B1/16 ,  H04B1/04

    CPC分类号： H04B1/1638 ,  H04B1/0475

    摘要： A frequency-selective circuit includes a signal input port, a signal output port, and a frequency response control block. The frequency response control block includes a mixer module and a filter module. The mixer module has a first port electrically connected to a signal path between the signal input port and the signal output port, a second port electrically connected to the filter module, and a local oscillator (LO) port. The mixer module operates according to an LO input received by the LO port. The filter module is electrically connected to the second port of the mixer module.

    摘要翻译： 频率选择电路包括信号输入端口，信号输出端口和频率响应控制块。 频率响应控制块包括混频器模块和滤波器模块。 混频器模块具有电连接到信号输入端口和信号输出端口之间的信号路径的第一端口，电连接到滤波器模块的第二端口和本地振荡器（LO）端口。 混频器模块根据LO端口接收到的LO输入进行工作。 过滤器模块电连接到混合器模块的第二端口。

    FREQUENCY-SELECTIVE CIRCUIT WITH MIXER MODULE IMPLEMENTED FOR CONTROLLING FREQUENCY RESPONSE, AND RELATED SIGNAL PROCESSING APPARATUS AND METHOD
    10.
    发明申请
    FREQUENCY-SELECTIVE CIRCUIT WITH MIXER MODULE IMPLEMENTED FOR CONTROLLING FREQUENCY RESPONSE, AND RELATED SIGNAL PROCESSING APPARATUS AND METHOD 有权
    具有用于控制频率响应的混频器模块的频率选择电路及相关信号处理装置和方法

    公开(公告)号：US20110230151A1

    公开(公告)日：2011-09-22

    申请号：US12959345

    申请日：2010-12-02

    申请人： Ming-Da Tsai ,  Siu-Chuang Ivan Lu

    发明人： Ming-Da Tsai ,  Siu-Chuang Ivan Lu

    IPC分类号： H04B1/18

    CPC分类号： H04B1/1638 ,  H04B1/0475

    摘要： A frequency-selective circuit includes a signal input port, a signal output port, and a frequency response control block. The frequency response control block includes a mixer module and a filter module. The mixer module has a first port electrically connected to a signal path between the signal input port and the signal output port, a second port electrically connected to the filter module, and a local oscillator (LO) port. The mixer module operates according to an LO input received by the LO port. The filter module is electrically connected to the second port of the mixer module.

    摘要翻译： 频率选择电路包括信号输入端口，信号输出端口和频率响应控制块。 频率响应控制块包括混频器模块和滤波器模块。 混频器模块具有电连接到信号输入端口和信号输出端口之间的信号路径的第一端口，电连接到滤波器模块的第二端口和本地振荡器（LO）端口。 混频器模块根据LO端口接收到的LO输入进行工作。 过滤器模块电连接到混合器模块的第二端口。