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    POWER DETECTOR
    4.
    发明申请
    POWER DETECTOR 审中-公开
    电源检测器

    公开(公告)号：US20160334444A1

    公开(公告)日：2016-11-17

    申请号：US14963921

    申请日：2015-12-09

    Applicant: MediaTek Inc.

    Inventor： Meng-Hung Chen ,  Osama K.A. Shana'a ,  YuenHui Chee ,  Chiyuan Lu

    IPC: G01R21/06

    CPC classification number: G01R21/07

    Abstract: Some embodiments relate to power detector including a voltage sensor configured to detect a voltage of a load and a current sensor configured to detect a current of the load. The power detector also includes circuitry configured to introduce a phase delay between the detected voltage of the load and the detected current of the load, thereby producing a voltage measurement and a current measurement. The circuitry is also configured to multiply the voltage measurement and the current measurement.

    Abstract translation: 一些实施例涉及功率检测器，其包括被配置为检测负载的电压的电压传感器和被配置为检测负载电流的电流传感器。 功率检测器还包括被配置为在检测到的负载电压和负载的检测电流之间引入相位延迟的电路，从而产生电压测量和电流测量。 该电路还被配置为乘以电压测量和电流测量。

    Front-End Module And Coupling Compensation For Closed-Loop Digital Pre-Distortion System
    5.
    发明申请
    Front-End Module And Coupling Compensation For Closed-Loop Digital Pre-Distortion System 审中-公开
    闭环数字预失真系统的前端模块和耦合补偿

    公开(公告)号：US20160105299A1

    公开(公告)日：2016-04-14

    申请号：US14972038

    申请日：2015-12-16

    Applicant: MediaTek Inc.

    Inventor： YuenHui Chee ,  Fei Song ,  James Wang ,  Toru Matsuura ,  Osama K.A. Shana'a ,  Chiyuan Lu

    IPC: H04L27/00 ,  H03F3/21 ,  H03F1/02 ,  H03F3/19 ,  H04L25/08 ,  H04B1/40

    CPC classification number: H04L27/0002 ,  H03F1/0205 ,  H03F1/3241 ,  H03F1/3247 ,  H03F3/189 ,  H03F3/19 ,  H03F3/20 ,  H03F3/245 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2201/3236 ,  H04B1/0475 ,  H04B1/40 ,  H04B2001/0425 ,  H04L25/08 ,  H04L27/36 ,  H04L27/368

    Abstract: Examples of front-end modules, apparatuses and methods for coupling compensation in a closed-loop digital pre-distortion (DPD) system are described. The closed-loop DPD circuit may include a PA and a loopback path. The PA may receive a PA input signal and amplify the PA input signal to provide a PA output signal proportional to a product of the PA input signal and a gain of the PA. The loopback path may receive the PA output signal to output a loopback signal. A forward coupling and a backward coupling may exist between the PA input signal and an output of the loopback path. The output of the loopback path may be proportional to a product of the PA output signal and a gain of the loopback path. The loopback path may include a coupling cancellation mechanism configured to cancel couplings between the PA input signal and the loopback signal.

    Abstract translation: 描述了用于在闭环数字预失真（DPD）系统中耦合补偿的前端模块，装置和方法的示例。 闭环DPD电路可以包括PA和环回路径。 PA可以接收PA输入信号并放大PA输入信号，以提供与PA输入信号的乘积和PA的增益成比例的PA输出信号。 环回路径可以接收PA输出信号以输出环回信号。 在PA输入信号和环回路径的输出之间可能存在正向耦合和反向耦合。 环回路径的输出可能与PA输出信号与环回路径的增益的乘积成比例。 环回路径可以包括被配置为消除PA输入信号和环回信号之间的耦合的耦合消除机构。

    Power detector
    6.
    发明授权
    Power detector 有权

    公开(公告)号：US10082528B2

    公开(公告)日：2018-09-25

    申请号：US14963921

    申请日：2015-12-09

    Applicant: MediaTek Inc.

    Inventor： Meng-Hung Chen ,  Osama K. A. Shana'a ,  YuenHui Chee ,  Chiyuan Lu

    IPC: G01R21/07

    CPC classification number: G01R21/07

    Abstract: Some embodiments relate to power detector including a voltage sensor configured to detect a voltage of a load and a current sensor configured to detect a current of the load. The power detector also includes circuitry configured to introduce a phase delay between the detected voltage of the load and the detected current of the load, thereby producing a voltage measurement and a current measurement. The circuitry is also configured to multiply the voltage measurement and the current measurement.

    ACTIVE COMPENSATION FOR POWER AMPLIFIER GAIN DROOP
    8.
    发明申请
    ACTIVE COMPENSATION FOR POWER AMPLIFIER GAIN DROOP 有权
    功率放大器增益驱动的主动补偿

    公开(公告)号：US20170012590A1

    公开(公告)日：2017-01-12

    申请号：US15053158

    申请日：2016-02-25

    Applicant: MediaTek Inc.

    Inventor： Keng Leong Fong ,  YuenHui Chee

    IPC: H03G3/30 ,  H04B17/13 ,  H04B1/04 ,  H03F3/19 ,  H03F3/21

    CPC classification number: H03G3/3042 ,  H03F3/19 ,  H03F3/245 ,  H03F2200/411 ,  H03F2200/451 ,  H04B1/0475 ,  H04B17/13 ,  H04B2001/0416

    Abstract: Some embodiments relate to a method and circuit for gain compensation. The method includes detecting a strength of an output signal generated by a power amplifier of a transmitter in response to a commanded transmission signal. The method also includes comparing the detected strength of the output signal to a delayed version of a detected strength of the commanded transmission signal to obtain an error signal. The method further includes compensating for gain drop of the output signal by adjusting a gain of the transmitter based on the error signal.

    Abstract translation: 一些实施例涉及用于增益补偿的方法和电路。 该方法包括响应于所命令的发送信号来检测由发射机的功率放大器产生的输出信号的强度。 该方法还包括将检测到的输出信号的强度与所命令的发送信号的检测强度的延迟版本进行比较，以获得误差信号。 该方法还包括通过基于误差信号调整发射机的增益来补偿输出信号的增益下降。

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