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    Power amplifier circuit
    1.
    发明授权
    Power amplifier circuit 有权

    公开(公告)号：US10090806B2

    公开(公告)日：2018-10-02

    申请号：US15674696

    申请日：2017-08-11

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Tsuyoshi Sato ,  Hidetoshi Matsumoto

    IPC: H03K5/22 ,  H03F1/02 ,  H03F3/19 ,  H03F3/24 ,  H04B1/04 ,  H04B1/16

    Abstract: The power amplifier circuit includes a first amplifier that amplifies a first signal and outputs a second signal, a second amplifier that amplifies the second signal and outputs a third signal, a power supply terminal that receives supply of a power supply voltage that varies as a function of an amplitude of the first signal, a first power supply line that supplies the power supply voltage from the power supply terminal to the first amplifier, a second power supply line that supplies the power supply voltage from the power supply terminal to the second amplifier, and a first delay circuit provided in the second power supply line.

    Communication unit
    5.
    发明授权
    Communication unit 有权

    公开(公告)号：US10454434B2

    公开(公告)日：2019-10-22

    申请号：US16038770

    申请日：2018-07-18

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Tsuyoshi Sato ,  Hidetoshi Matsumoto ,  Kiichiro Takenaka ,  Masahiro Ito ,  Satoshi Tanaka ,  Takahiro Katamata

    IPC: H03F3/24 ,  H03F3/21 ,  H03F3/45 ,  H03F3/195

    Abstract: A communication unit includes a first input terminal to which a first transmission signal based on a first communication standard is input, a second input terminal to which a second transmission signal based on a second communication standard is input, a first transmission signal amplifier circuit outputting a first amplified transmission signal, or outputting a second amplified transmission signal, a first input-output terminal outputting the first amplified transmission signal or the second amplified transmission signal, and at least one of a first reception signal and a second reception signal inputted to the first input-output terminal, a first reception signal amplifier circuit performing at least one of operation of outputting a first amplified reception signal and operation of outputting a second amplified reception signal, a first output terminal outputting the first amplified reception signal, and a second output terminal outputting the second amplified reception signal.

    POWER AMPLIFICATION MODULE AND FRONT END CIRCUIT
    7.
    发明申请
    POWER AMPLIFICATION MODULE AND FRONT END CIRCUIT 审中-公开
    功率放大模块和前端电路

    公开(公告)号：US20160112009A1

    公开(公告)日：2016-04-21

    申请号：US14977814

    申请日：2015-12-22

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Shinya Hitomi ,  Hidenori Obiya ,  Tsuyoshi Sato ,  Shingo Yanagihara

    IPC: H03F1/02 ,  H03F1/56 ,  H03F3/21 ,  H04B1/04

    CPC classification number: H03F1/0205 ,  H03F1/565 ,  H03F3/19 ,  H03F3/211 ,  H03F3/245 ,  H03F2200/111 ,  H03F2200/318 ,  H03F2200/411 ,  H03F2203/21139 ,  H03H7/38 ,  H04B1/04 ,  H04B1/525 ,  H04B2001/0416

    Abstract: A PA module (10) includes multiple amplifying elements (11a, 11b) and a variable filter circuit (12). The amplifying elements (11a, 11b) amplify a transmission signal in a frequency range including multiple communication bands and are cascade-connected to each other. The variable filter circuit (12) is connected between the amplifying elements (11a, 11b). The variable filter circuit (12) uses a transmission band corresponding to a used communication band selected from the multiple communication bands as a pass band and a reception band corresponding to the used communication band as an attenuation band.

    Abstract translation: PA模块（10）包括多个放大元件（11a，11b）和可变滤波器电路（12）。 放大元件（11a，11b）在包括多个通信频带的频率范围内放大发送信号，并且彼此级联。 可变滤波器电路（12）连接在放大元件（11a，11b）之间。 可变滤波器电路（12）使用与从多个通信频带中选择的使用的通信频带相对应的传输频带作为通带和与所使用的通信频带对应的接收频带作为衰减频带。

    POWER AMPLIFICATION MODULE
    8.
    发明申请
    POWER AMPLIFICATION MODULE 有权
    功率放大模块

    公开(公告)号：US20160056769A1

    公开(公告)日：2016-02-25

    申请号：US14932275

    申请日：2015-11-04

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Kiichiro Takenaka ,  Tsuyoshi Sato ,  Masahiro Ito ,  Hidetoshi Matsumoto ,  Satoshi Tanaka

    IPC: H03F1/02 ,  H03F3/21 ,  H03F3/45 ,  H03F3/193

    CPC classification number: H03F1/0205 ,  H03F1/0211 ,  H03F1/0222 ,  H03F3/191 ,  H03F3/193 ,  H03F3/211 ,  H03F3/245 ,  H03F3/45085 ,  H03F3/45179 ,  H03F2200/336 ,  H03F2200/451 ,  H03F2200/534 ,  H03F2200/541 ,  H03F2200/555 ,  H03F2200/78 ,  H03F2203/21106 ,  H03F2203/45481 ,  H03F2203/45554 ,  H03F2203/45638

    Abstract: An envelope tracking system is employed in a power amplification module that supports multiple frequency bands. The power amplification module includes multiple power amplification circuits, each of which includes: a first transformer to which a radio frequency signal is input; a differential amplification circuit, in which a first radio frequency signal output from transformer is input to a control electrode and in which a second radio frequency signal output from the transformer is input to a control electrode, the differential amplification circuit outputting an amplified signal obtained by amplifying a difference between the first and second radio frequency signals; and a second transformer for supplying, to the first differential amplification circuit, power-supply voltage varying according to the amplitude of the radio frequency signal and to which the first amplified signal is input.

    Abstract translation: 在支持多个频带的功率放大模块中采用包络跟踪系统。 功率放大模块包括多个功率放大电路，每个功率放大电路包括：输入射频信号的第一变压器; 差分放大电路，其中从变压器输出的第一射频信号输入到控制电极，并且其中从变压器输出的第二射频信号输入到控制电极，差分放大电路输出由 放大第一和第二射频信号之间的差; 以及第二变压器，用于向所述第一差分放大电路提供根据所述射频信号的幅度而变化并且被输入所述第一放大信号的电源电压。

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