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    RF TRANSMITTER, INTEGRATED CIRCUIT DEVICE, WIRELESS COMMUNICATION UNIT AND METHOD THEREFOR
    1.
    发明申请
    RF TRANSMITTER, INTEGRATED CIRCUIT DEVICE, WIRELESS COMMUNICATION UNIT AND METHOD THEREFOR 有权
    RF发射机，集成电路设备，无线通信单元及其方法

    公开(公告)号：US20140177755A1

    公开(公告)日：2014-06-26

    申请号：US13972924

    申请日：2013-08-22

    申请人： MediaTek Singapore Pte. Ltd.

    发明人： Chao Lu ,  Hua Wang ,  Paul Cheng Po Liang ,  Sang Won Son

    IPC分类号： H04B1/04

    CPC分类号： H04B1/0475 ,  H03F1/025 ,  H03F1/0294 ,  H03F1/3241 ,  H03F3/195 ,  H03F3/211 ,  H03F3/24 ,  H03F2200/336 ,  H03F2200/537 ,  H03F2200/541 ,  H04B1/0483 ,  H04B2001/0408 ,  H04B2001/0425

    摘要： A radio frequency (RF) transmitter includes a power amplifier comprising a plurality of power amplifier cells. At least one digital signal processing module of the RF transmitter is operably coupled to the power amplifier and comprises at least one digital pre-distortion component arranged to apply at least one digital pre-distortion codeword to the plurality of power amplifier cells, wherein the at least one digital pre-distortion codeword is applied to at least one of the plurality of power amplifier cells via a digital filter. A combiner is arranged to combine outputs of the plurality of power amplifier cells thereby generating an analogue RF signal for transmission over an RF interface based at least partly on the digitally filtered at least one digital pre-distortion codeword.

    摘要翻译： 射频（RF）发射机包括功率放大器，其包括多个功率放大器单元。 RF发射机的至少一个数字信号处理模块可操作地耦合到功率放大器，并且包括至少一个数字预失真分量，被布置成将至少一个数字预失真代码字应用于多个功率放大器单元，其中at 至少一个数字预失真码字经由数字滤波器被施加到多个功率放大器单元中的至少一个。 组合器被布置成组合多个功率放大器单元的输出，从而生成用于至少部分地基于数字滤波的至少一个数字预失真代码字的RF接口上的模拟RF信号。

    POWER AMPLIFIER AND THE RELATED POWER AMPLIFYING METHOD
    3.
    发明申请
    POWER AMPLIFIER AND THE RELATED POWER AMPLIFYING METHOD 审中-公开
    功率放大器和相关功率放大方法

    公开(公告)号：US20140112414A1

    公开(公告)日：2014-04-24

    申请号：US13907985

    申请日：2013-06-03

    申请人： MediaTek Singapore Pte. Ltd.

    发明人： Chao Lu ,  Sang Won Son

    IPC分类号： H04L27/36

    CPC分类号： H04L27/368 ,  H03F3/189 ,  H03F3/211 ,  H03F3/24 ,  H03F3/45179 ,  H03F2200/378 ,  H03F2200/541 ,  H03F2203/45332 ,  H03F2203/45394

    摘要： A power amplifier includes: a plurality of amplifying stages arranged to generate an output signal at an output terminal according to a phase-modulated signal and a plurality of amplitude-modulated signals, where each amplifying stage is arranged to receive the phase-modulated signal and one of the plurality of amplitude-modulated signals; an inductive circuit coupled between the output terminal and a first reference voltage; a matching circuit coupled between the output terminal and a loading circuit for providing a matching impedance between the output terminal and the loading circuit; and a capacitive circuit coupled to the output terminal for providing an adjustable capacitance to adjust a loading capacitance at the output terminal according to an adjusting signal; wherein the adjusting signal is indicative of a power of the output signal.

    摘要翻译： 功率放大器包括：多个放大级，被布置为根据相位调制信号和多个幅度调制信号在输出端产生输出信号，其中每个放大级被布置成接收相位调制信号;以及 多个幅度调制信号中的一个; 耦合在所述输出端子和第一参考电压之间的感应电路; 耦合在所述输出端子和负载电路之间以在所述输出端子和所述负载电路之间提供匹配阻抗的匹配电路; 以及电容电路，其耦合到所述输出端子，用于提供可调电容，以根据调整信号调整所述输出端子处的负载电容; 其中所述调整信号指示所述输出信号的功率。