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    COMMUNICATION UNITS AND METHODS FOR POWER SUPPLY CONTROL
    15.
    发明申请
    COMMUNICATION UNITS AND METHODS FOR POWER SUPPLY CONTROL 有权
    通信单元和供电控制方法

    公开(公告)号：US20170005676A1

    公开(公告)日：2017-01-05

    申请号：US15177113

    申请日：2016-06-08

    Applicant: MEDIATEK INC

    Inventor： Sheng-Hong Yan ,  Chia-Sheng Peng ,  Paul Cheng Po Liang

    IPC: H04B1/04 ,  H04W52/52 ,  H04L27/36

    CPC classification number: H04B1/0475 ,  H03F1/0227 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/102 ,  H03F2200/451 ,  H03F2200/511 ,  H04B2001/0425 ,  H04L27/367 ,  H04W52/52

    Abstract: A communication unit comprises a decimator configured to sample a variable control signal and output a reduced bandwidth variable control signal; and a multi-level power supply, MLPS, comprising an input and an output, wherein the input is coupled to the decimator and configured to receive the reduced bandwidth variable control signal and, in response thereto, the output delivers multi-level output voltages to supply a power amplifier, PA, module.

    Abstract translation: 通信单元包括抽取器，其被配置为对可变控制信号进行采样并输出减小的带宽可变控制信号; 以及包括输入和输出的多电平电源MLPS，其中所述输入耦合到所述抽取器并且被配置为接收所述减小的带宽可变控制信号，并且响应于此，所述输出将多电平输出电压提供给 提供功率放大器，PA模块。

    METHODS AND APPARATUS FOR ENVELOPE TRACKING SYSTEM
    16.
    发明申请
    METHODS AND APPARATUS FOR ENVELOPE TRACKING SYSTEM 有权
    包装跟踪系统的方法和装置

    公开(公告)号：US20150195118A1

    公开(公告)日：2015-07-09

    申请号：US14612305

    申请日：2015-02-03

    Applicant: Mediatek Inc.

    Inventor： Sheng-Hong Yan ,  Hao-Ping Hong

    IPC: H04L27/34 ,  H03F3/24

    CPC classification number: H04L27/3411 ,  H03F3/24 ,  H03F2200/105 ,  H03F2200/465 ,  H03F2200/504 ,  H04B1/0475 ,  H04B2001/0408 ,  H04B2001/0416

    Abstract: A communication unit has an envelope tracking system operably coupled to a power amplifier, PA, module. The envelope tracking system has at least one slew rate module arranged to re-distribute a slew rate across a number of input samples according to a maximum slew rate of the number of input samples; and a supply modulator arranged to variably control a supply voltage for the PA module in response to an output of the at least one slew rate module.

    Abstract translation: 通信单元具有可操作地耦合到功率放大器PA模块的包络跟踪系统。 包络跟踪系统具有至少一个压摆率模块，其布置成根据输入样本数量的最大转换速率，跨多个输入样本重新分配压摆率; 以及电源调制器，其布置成响应于所述至少一个压摆率模块的输出可变地控制所述PA模块的电源电压。

    RF RECEIVER AND DIGITALLY-ASSISTED CALIBRATION METHOD APPLICABLE THERETO
    17.
    发明申请
    RF RECEIVER AND DIGITALLY-ASSISTED CALIBRATION METHOD APPLICABLE THERETO 有权
    RF接收器和数字辅助校准方法

    公开(公告)号：US20130266102A1

    公开(公告)日：2013-10-10

    申请号：US13798241

    申请日：2013-03-13

    Applicant: MEDIATEK INC.

    Inventor： Sheng-Hong Yan ,  Sheng-Hao Chen ,  Cheng-Po Liang ,  Jen-Che Tsai

    IPC: H04B1/10

    CPC classification number: H04B1/1081 ,  H04B1/10 ,  H04B1/123 ,  H04B17/11

    Abstract: A radio frequency (RF) receiver includes a digital tuning engine; I-path and Q-path analog filters, tuned by the digital tuning engine; and a digital compensation circuit. The digital tuning engine executes a RC (resistor-capacitor) time constant calibration to adjust respective cut-off frequencies of the I-path analog filter and the Q-path analog filter. The digital tuning engine executes a filter mismatch calibration to match the I-path analog filter and the Q-path analog filter. The digital tuning engine executes a filter residual mismatch calibration to match an I-path response from the I-path analog filter to the digital compensation circuit and a Q-path response from the Q-path analog filter to the digital compensation circuit.

    Abstract translation: 射频（RF）接收机包括数字调谐引擎; I路径和Q路径模拟滤波器，由数字调谐引擎调谐; 和数字补偿电路。 数字调谐引擎执行RC（电阻 - 电容）时间常数校准，以调整I路径模拟滤波器和Q路径模拟滤波器的相应截止频率。 数字调谐引擎执行滤波器失配校准，以匹配I路径模拟滤波器和Q路径模拟滤波器。 数字调谐引擎执行滤波器残余失配校准，以匹配从I路径模拟滤波器到数字补偿电路的I路径响应以及从Q路径模拟滤波器到数字补偿电路的Q路径响应。

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