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    Wireless transmitter for multi-mode concurrent transmission of signals complying with different communication standards
    3.
    发明授权
    Wireless transmitter for multi-mode concurrent transmission of signals complying with different communication standards 有权
    用于多模并发传输符合不同通信标准的信号的无线发射机

    公开(公告)号：US09240920B2

    公开(公告)日：2016-01-19

    申请号：US14109968

    申请日：2013-12-18

    Applicant: MEDIATEK INC.

    Inventor： Ho-Chi Huang ,  Chun-Hsien Peng ,  Paul Cheng Po Liang

    IPC: H04L27/00 ,  H04L27/38 ,  H04L27/20

    CPC classification number: H04L27/3854 ,  H04L27/2053

    Abstract: A wireless transmitter has a digital baseband module and a radio-frequency (RF) transmitter. The digital baseband module generates a multi-mode modulated signal by using a plurality of digital synthesizers. The RF transmitter has a frequency synthesizer and a digital power amplifier (DPA). The frequency synthesizer generates an oscillation signal with an RF carrier frequency. The DPA generates a multi-standard RF signal according to the multi-mode modulated signal and the oscillation signal.

    Abstract translation: 无线发射机具有数字基带模块和射频（RF）发射机。 数字基带模块通过使用多个数字合成器来产生多模调制信号。 RF发射机具有频率合成器和数字功率放大器（DPA）。 频率合成器产生具有RF载波频率的振荡信号。 DPA根据多模调制信号和振荡信号产生多标准RF信号。

    Transmitter, communication unit and method for limiting spectral re-growth
    4.
    发明授权
    Transmitter, communication unit and method for limiting spectral re-growth 有权

    公开(公告)号：US10153794B2

    公开(公告)日：2018-12-11

    申请号：US15662903

    申请日：2017-07-28

    Applicant: MediaTek, Inc.

    Inventor： Toru Matsuura ,  Paul Cheng Po Liang

    IPC: H04B1/04 ,  H04L27/36 ,  H04L25/03 ,  H03F3/24 ,  H03F1/32 ,  H04B1/00

    Abstract: A transmitter includes a signal generator arranged to generate a digital baseband signal representative of a signal for transmission; a digital predistortion, DPD, circuit configured to predistort the digital baseband signal; and a power amplifier is arranged to amplify the predistorted signal. The DPD circuit includes a first signal shaping circuit operably coupled to the signal generator and the DPD predistortion circuit and configured to receive the generated digital signal and apply first envelope shaping to shape the predistortion applied to at least the amplitude of the generated digital signal and produce a first DPD signal; a second signal shaping circuit operably coupled to the signal generator and an output of the DPD predistortion circuit and configured to receive and apply the second envelope shaped digital signal to the first DPD signal and produce a second envelope shaped DPD signal. A multiplier is configured to receive and multiply the digital signal and the second envelope shaped DPD signal and output a digitally predistorted signal for transmission.

    COMMUNICATION SYSTEM WITH UP-CONVERTER AND DIGITAL BASEBAND PROCESSING CIRCUIT IMPLEMENTED IN ONE DIE SEPARATED FROM ANOTHER DIE HAVING DOWN-CONVERTER, AND RELATED COMMUNICATION METHOD THEREOF
    8.
    发明申请
    COMMUNICATION SYSTEM WITH UP-CONVERTER AND DIGITAL BASEBAND PROCESSING CIRCUIT IMPLEMENTED IN ONE DIE SEPARATED FROM ANOTHER DIE HAVING DOWN-CONVERTER, AND RELATED COMMUNICATION METHOD THEREOF 有权
    具有上转换器和数字基带处理电路的通信系统，在具有下变频器的另一个DIE中分离的一个DIE中实现，以及相关通信方法

    公开(公告)号：US20140119416A1

    公开(公告)日：2014-05-01

    申请号：US13798127

    申请日：2013-03-13

    Applicant: MEDIATEK INC.

    Inventor： Ho-Chi Huang ,  Paul Cheng Po Liang

    IPC: H04B1/40

    CPC classification number: H04B1/40

    Abstract: One communication system includes a first die, a second die and a front-end circuit. The first die has an up-converter and a digital baseband (DBB) processing circuit. The second die has a down-converter. The front-end circuit couples an antenna to the first and second dies. Another exemplary communication system includes a first die, a second die and a front-end circuit. The first die performs digital baseband (DBB) processing, and generates a first signal with a higher frequency according to a second signal, wherein the second signal is derived from an output signal of the DBB processing. The second die generates a third signal with a lower frequency according to a fourth signal. The front-end circuit couples the first signal from the first die to an antenna and couples the fourth signal from the antenna to the second die.

    Abstract translation: 一个通信系统包括第一管芯，第二管芯和前端回路。 第一个芯片具有上变频器和数字基带（DBB）处理电路。 第二个模具有一个下变频器。 前端电路将天线耦合到第一和第二裸片。 另一示例性通信系统包括第一管芯，第二管芯和前端回路。 第一芯片执行数字基带（DBB）处理，并且根据第二信号产生具有较高频率的第一信号，其中第二信号是从DBB处理的输出信号导出的。 第二模具根据第四信号产生具有较低频率的第三信号。 前端电路将来自第一管芯的第一信号耦合到天线，并将第四信号从天线耦合到第二管芯。

    COMMUNICATION UNITS AND METHODS FOR POWER SUPPLY CONTROL
    9.
    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。

    RADIO FREQUENCY TRANSMITTER WITH EXTENDED POWER RANGE AND RELATED RADIO FREQUENCY TRANSMISSION METHOD
    10.
    发明申请
    RADIO FREQUENCY TRANSMITTER WITH EXTENDED POWER RANGE AND RELATED RADIO FREQUENCY TRANSMISSION METHOD 有权
    具有扩展功率范围和相关无线电频率传输方法的无线电频率发射机

    公开(公告)号：US20140355717A1

    公开(公告)日：2014-12-04

    申请号：US14252795

    申请日：2014-04-15

    Applicant: MEDIATEK INC.

    Inventor： Chao Lu ,  Chun-Hsien Peng ,  Paul Cheng Po Liang

    IPC: H04B1/04

    CPC classification number: H03F3/245 ,  G11C7/22 ,  H03F1/0211 ,  H03F1/0266 ,  H03F3/211 ,  H03F3/45179 ,  H03F2200/321 ,  H03F2200/336 ,  H03F2203/45302

    Abstract: A radio frequency transmitter includes a digital power amplifier and a bias control circuit. The digital power amplifier is arranged for receiving at least a radio frequency input signal, a digital amplitude control word signal and at least one bias voltage to generate a radio frequency output signal. The bias control circuit is coupled to the digital power amplifier, and is arranged for adjusting the at least one bias voltage according to a power control signal.

    Abstract translation: 射频发射机包括数字功率放大器和偏置控制电路。 数字功率放大器布置成用于至少接收射频输入信号，数字幅度控制字信号和至少一个偏置电压以产生射频输出信号。 偏置控制电路耦合到数字功率放大器，并且被布置用于根据功率控制信号调整至少一个偏置电压。

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