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    Receiver
    2.
    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

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

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

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

    CPC classification number: H04L25/02 ,  H04B1/06 ,  H04B1/30 ,  H04B2001/305

    Abstract: 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.

    Abstract translation: 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。

    SLICED TRANSMITTER FRONT-END
    3.
    发明申请
    SLICED TRANSMITTER FRONT-END 有权
    SLICED发射机前端

    公开(公告)号：US20130142274A1

    公开(公告)日：2013-06-06

    申请号：US13610912

    申请日：2012-09-12

    Applicant: Hsiang-Hui Chang ,  Augusto Marques ,  Li-Shin Lai ,  Chih-Hao Sun ,  George Chien

    Inventor： Hsiang-Hui Chang ,  Augusto Marques ,  Li-Shin Lai ,  Chih-Hao Sun ,  George Chien

    IPC: H04L25/02

    CPC classification number: H04L25/02 ,  H04L27/0002

    Abstract: An embodiment of the invention provides a sliced transmitter front-end (TX FE). The sliced TX FE includes first TX FE slices and a second TX FE slice that are connected in parallel. As a whole the first TX FE slices contributes a high-gain section to a superimposed gain range of the sliced TX FE. The second TX FE slice has a gain range that constitutes a low-gain section of the superimposed gain range of the sliced TX FE. A minimum gain of the gain range of the second TX FE slice is smaller than a minimum gain of the high-gain section.

    Abstract translation: 本发明的实施例提供了一个切片发射机前端（TX FE）。 分片TX FE包括并行连接的第一TX FE片和第二TX FE片。 作为整体，第一TX FE片对切片TX FE的叠加增益范围贡献高增益部分。 第二TX FE切片具有构成切片TX FE的叠加增益范围的低增益部分的增益范围。 第二TX FE片的增益范围的最小增益小于高增益部分的最小增益。

    Systems and methods for calibrating power regulated communication circuitry
    5.
    发明授权
    Systems and methods for calibrating power regulated communication circuitry 有权
    用于校准功率调节通信电路的系统和方法

    公开(公告)号：US07890132B2

    公开(公告)日：2011-02-15

    申请号：US12775694

    申请日：2010-05-07

    Applicant: George Chien ,  King Chun Tsai ,  Sang Won Son ,  Alireza Shirvani Mahdavi ,  Qiong Sun ,  Leycheoh Lim

    Inventor： George Chien ,  King Chun Tsai ,  Sang Won Son ,  Alireza Shirvani Mahdavi ,  Qiong Sun ,  Leycheoh Lim

    IPC: H04B7/00

    CPC classification number: H04W52/52 ,  H04B17/102 ,  H04B17/13

    Abstract: Systems and methods are provided for calibrating the control mechanism in a communication circuit to allow the communication circuit to maintain a desired output power level. The communication circuit includes a variable gain adjustment circuit and a power amplifier, which operate together to provide an output power level. A control circuit controls the variable gain adjustment circuit based on a default gain parameter, a high power threshold, and a low power threshold. A calibration circuit in the control circuit calibrates a default gain parameter to provide a desired output power. A power detector can detect the desired output power level to provide an output power measurement. The calibration circuit calibrates upper and lower power thresholds to provide an acceptable range of power variation around the output power measurement.

    Abstract translation: 提供了用于校准通信电路中的控制机构以允许通信电路保持期望的输出功率电平的系统和方法。 通信电路包括可变增益调整电路和功率放大器，其一起工作以提供输出功率电平。 控制电路基于默认增益参数，高功率阈值和低功率阈值来控制可变增益调整电路。 控制电路中的校准电路校准默认增益参数以提供期望的输出功率。 功率检测器可以检测期望的输出功率电平以提供输出功率测量。 校准电路校准上限和下限功率阈值，以提供输出功率测量周围功率变化范围的可接受范围。

    Variable gain amplification using Taylor expansion
    6.
    发明授权
    Variable gain amplification using Taylor expansion 有权
    使用泰勒扩展的可变增益放大

    公开(公告)号：US07199661B1

    公开(公告)日：2007-04-03

    申请号：US11029194

    申请日：2005-01-03

    Applicant: Alireza Shirvani-Mahdavi ,  George Chien

    Inventor： Alireza Shirvani-Mahdavi ,  George Chien

    IPC: H03F3/45

    CPC classification number: H03F3/45085 ,  H03F2203/45352 ,  H03F2203/45544 ,  H03F2203/45596 ,  H03F2203/45641 ,  H03F2203/45726 ,  H03G1/0017

    Abstract: Circuits and methods are provided for variable gain amplification. In one implementation, a circuit is provided that includes a control circuit, an amplifier circuit, and a gain circuit. The control circuit receives a control signal and produces a current control signal, the current control signal being a ratio of a first current and a second current. The amplifier circuit is operable to apply a gain to an input voltage for producing an output voltage. The gain circuit is in communication with the control circuit and the amplifier circuit and receiving the current control signal, the gain circuit operable to adjust the gain responsive to a change in the control signal.

    Abstract translation: 为可变增益放大提供电路和方法。 在一个实施方式中，提供了一种包括控制电路，放大器电路和增益电路的电路。 控制电路接收控制信号并产生电流控制信号，电流控制信号是第一电流和第二电流的比值。 放大器电路可操作以对输入电压施加增益以产生输出电压。 增益电路与控制电路和放大器电路通信并接收电流控制信号，增益电路可操作以响应于控制信号的变化来调节增益。

    Method and apparatus for an LNA with high linearity and improved gain control
    7.
    发明授权
    Method and apparatus for an LNA with high linearity and improved gain control 有权
    具有高线性度和改进的增益控制的LNA的方法和装置

    公开(公告)号：US07190230B1

    公开(公告)日：2007-03-13

    申请号：US11435995

    申请日：2006-05-17

    Applicant: Xiaodong Jin ,  Lawrence Tse ,  King Chun Tsai ,  George Chien

    Inventor： Xiaodong Jin ,  Lawrence Tse ,  King Chun Tsai ,  George Chien

    IPC: H03F3/04

    CPC classification number: H03F3/193 ,  H03F1/223

    Abstract: A low noise amplifier (LNA) comprises an amplifier having an inverting input, a non-inverting input and an output. A first transistor has a control input that communicates with said output of said amplifier, a first terminal that generates a LNA output current and a second terminal that communicates with said inverting input. A device communicates with said second terminal of said first transistor, includes an output and has a resistance that is modulated in response to an input voltage to said LNA. The device is a variable resistor.

    Abstract translation: 低噪声放大器（LNA）包括具有反相输入，非反相输入和输出的放大器。 第一晶体管具有与所述放大器的所述输出通信的控制输入端，产生LNA输出电流的第一端子和与所述反相输入端通信的第二端子。 与所述第一晶体管的所述第二端子通信的装置包括输出端，并具有响应于所述LNA的输入电压而被调制的电阻。 该器件是一个可变电阻器。

    Sliced transmitter front-end
    8.
    发明授权
    Sliced transmitter front-end 有权
    切片变送器前端

    公开(公告)号：US09065691B2

    公开(公告)日：2015-06-23

    申请号：US13610912

    申请日：2012-09-12

    Applicant: Hsiang-Hui Chang ,  Augusto Marques ,  Li-Shin Lai ,  Chih-Hao Sun ,  George Chien

    Inventor： Hsiang-Hui Chang ,  Augusto Marques ,  Li-Shin Lai ,  Chih-Hao Sun ,  George Chien

    IPC: H04L25/02 ,  H04L27/00

    CPC classification number: H04L25/02 ,  H04L27/0002

    Abstract: An embodiment of the invention provides a sliced transmitter front-end (TX FE). The sliced TX FE includes first TX FE slices and a second TX FE slice that are connected in parallel. As a whole the first TX FE slices contributes a high-gain section to a superimposed gain range of the sliced TX FE. The second TX FE slice has a gain range that constitutes a low-gain section of the superimposed gain range of the sliced TX FE. A minimum gain of the gain range of the second TX FE slice is smaller than a minimum gain of the high-gain section.

    Abstract translation: 本发明的实施例提供了一个切片发射机前端（TX FE）。 分片TX FE包括并行连接的第一TX FE片和第二TX FE片。 作为整体，第一TX FE片对切片TX FE的叠加增益范围贡献高增益部分。 第二TX FE切片具有构成切片TX FE的叠加增益范围的低增益部分的增益范围。 第二TX FE片的增益范围的最小增益小于高增益部分的最小增益。

    Interference-robust receiver for a wireless communication system
    10.
    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

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

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

    IPC: H04B1/10 ,  H04B1/28

    CPC classification number: H04B1/28 ,  H04B1/10

    Abstract: 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.

    Abstract translation: 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。

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