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    Radio frequency module and communication device
    1.
    发明授权
    Radio frequency module and communication device 有权

    公开(公告)号：US11489547B2

    公开(公告)日：2022-11-01

    申请号：US17066492

    申请日：2020-10-09

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Shigeru Tsuchida ,  Daerok Oh ,  Takahiro Katamata ,  Satoshi Goto ,  Mitsunori Samata ,  Yoshiki Yasutomo

    IPC: H04B1/04 ,  H03F1/56 ,  H03F3/24

    Abstract: A radio frequency module includes: a module board that includes a first principal surface and a second principal surface on opposite sides of the module board; a power amplifier; and a first circuit component. The power amplifier includes: a first amplifying circuit element; a second amplifying circuit element; and an output transformer that includes a primary coil and a secondary coil. An end of the primary coil is connected to an output terminal of the first amplifying circuit element. Another end of the primary coil is connected to an output terminal of the second amplifying circuit element. An end of the secondary coil is connected to an output terminal of the power amplifier. The first amplifying circuit element and the second amplifying circuit element are disposed on the first principal surface. The first circuit component is disposed on the second principal surface.

    High frequency amplification circuit, high frequency front-end circuit, and communication device
    2.
    发明授权
    High frequency amplification circuit, high frequency front-end circuit, and communication device 有权

    公开(公告)号：US11437959B2

    公开(公告)日：2022-09-06

    申请号：US17064812

    申请日：2020-10-07

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Shigeru Tsuchida

    IPC: H03F1/02 ,  H03F3/191 ,  H03H7/46 ,  H03H7/38 ,  H03H7/01

    Abstract: A high frequency amplification circuit includes transmission amplification circuits 11 and 12; a transmission filter D-Tx whose pass band is a band D of a first frequency band group; transmission filters E-Tx and G-Tx whose pass bands are respectively bands E and G of a second frequency band group; an output matching circuit 31 configured to match the transmission amplification circuit 11 and the transmission filter D-Tx; and an output matching circuit 32 configured to match the transmission amplification circuit 12 and the transmission filters E-Tx and G-Tx. The band D is positioned at a high frequency-side end portion of the first frequency band group, and the band E is positioned at a low frequency-side end portion of the second frequency band group. The output matching circuit 31 includes a low-pass circuit, and the output matching circuit 32 includes an impedance-variable circuit.

    Radio-frequency module and communication apparatus
    5.
    发明授权
    Radio-frequency module and communication apparatus 有权

    公开(公告)号：US11791853B2

    公开(公告)日：2023-10-17

    申请号：US17376167

    申请日：2021-07-15

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Shigeru Tsuchida ,  Hiroki Shonai ,  Masakazu Tani ,  Yukiya Yamaguchi ,  Morio Takeuchi

    IPC: H04B1/04 ,  H04B1/16

    CPC classification number: H04B1/0458 ,  H04B1/0483 ,  H04B1/1615

    Abstract: A radio-frequency module includes a mounting substrate having a first main surface; a first power amplifier that is mounted on the first main surface and that amplifies a first transmission signal in a first frequency band; a second power amplifier that is mounted on the first main surface and that amplifies a second transmission signal in a second frequency band different from the first frequency band; a first output matching circuit that is mounted on the first main surface and that receives the first transmission signal amplified by the first power amplifier; and a second output matching circuit that is mounted on the first main surface and that receives the second transmission signal amplified by the second power amplifier. The first output matching circuit and the second output matching circuit are mounted along a second direction intersecting with the first direction.

    Radio-frequency module and communication device
    6.
    发明授权
    Radio-frequency module and communication device 有权

    公开(公告)号：US11736077B2

    公开(公告)日：2023-08-22

    申请号：US17338697

    申请日：2021-06-04

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Morio Takeuchi ,  Shigeru Tsuchida ,  Yukiya Yamaguchi

    IPC: H04W88/02 ,  H03F3/24 ,  H03F1/56 ,  H04L5/14 ,  H04B1/40

    CPC classification number: H03F3/245 ,  H03F1/56 ,  H04B1/40 ,  H04L5/14 ,  H03F2200/222 ,  H03F2200/387 ,  H03F2200/451

    Abstract: A radio-frequency module includes a first power amplifier, a second power amplifier, a switch, a plurality of first filters, and a second filter. The first power amplifier amplifies a transmission signal of a first frequency band and outputs the amplified transmission signal. The second power amplifier amplifies a transmission signal of a second frequency band and outputs the amplified transmission signal. The pass bands of the plurality of first filters are contained within the first frequency band. The pass band of the second filter is contained within the second frequency band. The second power amplifier has a greater output power level than the first power amplifier. The first output terminal of the first power amplifier is switchably connectable to the plurality of first filters via the switch. The second output terminal of the second power amplifier is connected to the second filter without the switch interposed therebetween.

    Power amplification circuit
    7.
    发明授权
    Power amplification circuit 有权

    公开(公告)号：US10924072B2

    公开(公告)日：2021-02-16

    申请号：US16296754

    申请日：2019-03-08

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Kenji Tahara ,  Kenichi Shimamoto ,  Shigeru Tsuchida ,  Mitsunori Samata ,  Yoshiaki Sukemori

    IPC: H03F3/04 ,  H03F3/24 ,  H03F3/195

    Abstract: A power amplification circuit includes an amplification transistor, a variable voltage power supply that supplies a variable voltage to a collector of the amplification transistor, a bias circuit that has a constant current amplification transistor outputting a DC bias current to a base of the amplifier transistor, and a current limiting circuit that limits the DC bias current. The current limiting circuit includes a current limiting transistor, a resistor element connected to a collector of the current limiting transistor and the variable voltage power supply, and a resistor element connected to a base of the current limiting transistor and a base of the constant current amplifying transistor.

    Radio-frequency module and communication device
    8.
    发明授权
    Radio-frequency module and communication device 有权

    公开(公告)号：US12191828B2

    公开(公告)日：2025-01-07

    申请号：US18349997

    申请日：2023-07-11

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Morio Takeuchi ,  Shigeru Tsuchida ,  Yukiya Yamaguchi

    IPC: H04B1/00 ,  H03F1/56 ,  H03F3/24 ,  H04B1/40 ,  H04L5/14

    Abstract: A radio-frequency module includes a first power amplifier, a second power amplifier, a switch, a plurality of first filters, and a second filter. The first power amplifier amplifies a transmission signal of a first frequency band and outputs the amplified transmission signal. The second power amplifier amplifies a transmission signal of a second frequency band and outputs the amplified transmission signal. The pass bands of the plurality of first filters are contained within the first frequency band. The pass band of the second filter is contained within the second frequency band. The second power amplifier has a greater output power level than the first power amplifier. The first output terminal of the first power amplifier is switchably connectable to the plurality of first filters via the switch. The second output terminal of the second power amplifier is connected to the second filter without the switch interposed therebetween.

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