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公开(公告)号：US20240146258A1
公开(公告)日：2024-05-02
申请号：US18407467
申请日：2024-01-09
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji TAHARA , Shigeru TSUCHIDA , Kae YAMAMOTO
CPC classification number: H03F3/245 , H03F1/565 , H03F3/195 , H03F3/72 , H03F2200/423 , H03F2200/451 , H03F2200/537 , H03F2203/7206
Abstract: A power amplifier circuit that includes an external input terminal and an external output terminal; a first power amplifier, a second power amplifier, a third power amplifier, and a fourth power amplifier; a transformer including an input-side coil and an output-side coil; and a first transmission line, the external input terminal being connected to an input terminal of the first and second power amplifiers, an output terminal of the first power amplifier is connected to an input terminal of the third and fourth power amplifiers, output terminals of the third and fourth power amplifiers being connected to a first and second end of the input-side coil respectively, the external output terminal being connected to a first end of the output-side coil, and an output terminal of the second power amplifier being connected to a second end of the output-side coil via the first transmission line.
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公开(公告)号：US20240088841A1
公开(公告)日：2024-03-14
申请号：US18518615
申请日：2023-11-24
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji TAHARA , Yoshiaki SUKEMORI , Kae YAMAMOTO , Ryo WAKABAYASHI , Isao TAKENAKA
CPC classification number: H03F3/19 , H03F1/565 , H04B1/40 , H03F2200/387 , H03F2200/451
Abstract: A radio frequency circuit includes carrier amplifiers and peak amplifiers, transformers, a signal output terminal connected to a first end of an output-side coil, an LC series circuit, and a capacitor. An input-side coil is connected, at its first end, to the carrier amplifier, and is connected, at its second end, to the carrier amplifier. An input-side coil is connected, at its first end, to the peak amplifier, and is connected, at its second end, to the peak amplifier. The LC series circuit is connected between the peak amplifier and the ground. The capacitor is connected to a second end of the output-side coil and a first end of an output-side coil. The output-side coil is connected, at its second end, to the ground.
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公开(公告)号：US20220021510A1
公开(公告)日：2022-01-20
申请号：US17314043
申请日：2021-05-07
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji TAHARA , Seikoh ONO , Kiyoshi AIKAWA , Masanari MIURA , Hiromichi KITAJIMA
Abstract: A radio frequency (RF) module including a module substrate; a filter with a passband including communication band for TDD; a switch connected to the filter; a power amplifier that is arranged on a first surface of the module substrate and connected to the filter via the switch; a low-noise amplifier that is arranged on a second surface of the module substrate and connected to the filter via the switch; a filter with a passband including communication band; a low-noise amplifier that is arranged on the second surface and connected to the filter; and a conductive member arranged between the low-noise amplifiers on the second surface.
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公开(公告)号：US20200321929A1
公开(公告)日：2020-10-08
申请号：US16837601
申请日：2020-04-01
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yoshihiro DAIMON , Kenji TAHARA
Abstract: A first power amplifier amplifies first transmission signals in a first frequency band and outputs the resultant signals. A first matching circuit includes a plurality of first inductor portions and is connected to an output pad electrode of the first power amplifier. A second power amplifier amplifies second transmission signals in a second frequency band higher than the first frequency band and outputs the resultant signals. A second matching circuit includes at least one second inductor portion and is connected to an output side of the second power amplifier. A multilayer substrate has a first main surface and a second main surface located opposite to each other and is provided with the first and second power amplifiers and the first and second matching circuits. The first inductor portion closer than the other first inductor portions to the output pad electrode includes an inner-layer inductor portion located in the multilayer substrate.
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公开(公告)号：US20240421775A1
公开(公告)日：2024-12-19
申请号：US18818671
申请日：2024-08-29
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji TAHARA , Kae YAMAMOTO
Abstract: A Doherty amplification circuit includes a carrier amplifier, a peak amplifier, a phase shift circuit, a phase shift circuit connected to an output end of the peak amplifier, a transformer including an input terminal connected to an output end of the carrier amplifier, and output terminals, and a transformer including input terminals, which are respectively connected to the output terminals of the transformer, and an output terminal connected to an antenna connection terminal, in which the phase shift circuit is connected between the output terminal of the transformer and the input terminal of the transformer, and the peak amplifier and the phase shift circuit are connected between the output terminal of the transformer and the input terminal of the transformer.
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Patent Agency Ranking
16.发明公开公开(公告)号：US20240178868A1
公开(公告)日：2024-05-30
申请号：US18432115
申请日：2024-02-05
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji TAHARA , Hidetaka TAKAHASHI , Kae YAMAMOTO
CPC classification number: H04B1/04 , H03F3/24 , H03F3/68 , H04B2001/0408
Abstract: A radio frequency circuit including power amplifiers, a transformer having an input-side coil and an output-side coil, a bias circuit connected to the power amplifiers, an output terminal connected to one end of the output-side coil, an output terminal connected to another end of the output-side coil, a switch connected between the output terminal and a ground, a switch connected between the output terminal and a ground, a phase shift line having an input end connected to an output terminal of the power amplifier and an output end connected to one end of the input-side coil, and a phase shift line having an input end connected to an output terminal of the power amplifier and an output end connected to another end of the input-side coil.
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公开(公告)号：US20240171140A1
公开(公告)日：2024-05-23
申请号：US18420805
申请日：2024-01-24
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji TAHARA , Kensuke TAKIMOTO , Kae YAMAMOTO
CPC classification number: H03F3/245 , H03F1/0216 , H04B1/0475 , H03F2200/294 , H03F2200/451 , H03F2200/541 , H04B2001/0416
Abstract: A power amplifier circuit that includes a carrier amplifier, peaking amplifiers, an input coil, an output coil, an input coil, an output coil, an output terminal to which one end of the output coil is connected, and ¼-wavelength transmission lines. The carrier amplifier is connected to one end of the input coil. The peaking amplifier is connected to one end of the ¼-wavelength transmission line. The peaking amplifier is connected to one end of the input coil. The peaking amplifier is connected to one end of the ¼-wavelength transmission line. The other end of the ¼-wavelength transmission line is connected to the other end of the input coil. The other end of the ¼-wavelength transmission line is connected to the other end of the input coil. One end of the output coil is connected to the other end of the output coil.
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公开(公告)号：US20240128932A1
公开(公告)日：2024-04-18
申请号：US18395786
申请日：2023-12-26
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji TAHARA , Yoshiaki SUKEMORI , Kae YAMAMOTO , Ryo WAKABAYASHI
CPC classification number: H03F1/0222 , H03F3/195 , H03F3/245 , H03F3/72 , H03F2200/102 , H03F2200/423 , H03F2200/451 , H03F2203/7215
Abstract: A power amplifier circuit includes external input and output terminals; a first power amplifier with first input and output terminals, the first input terminal being connected to the external input terminal, the first output terminal being connected to the external output terminal; a second power amplifier having second input and output terminals, the second input terminal being connected to the external input terminal, the second output terminal being connected to the external output terminal; a power supply terminal that receives a power supply voltage that is supplied to the first power amplifier and controllably supplied to the second power amplifier; and a switch having first and second terminals, the first terminal being connected to the power supply terminal, the second terminal being connected to the second power amplifier.
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公开(公告)号：US20240113662A1
公开(公告)日：2024-04-04
申请号：US18471337
申请日：2023-09-21
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji TAHARA , Kae YAMAMOTO
CPC classification number: H03F1/0288 , H03F1/56 , H03F3/245 , H03F3/604
Abstract: An amplifier module includes an antenna that includes four power feed points, and four power amplifiers. Output ends of the four power amplifiers are connected to the four power feed points in a one-to-one relationship. The four power feed points are arranged rotationally symmetrically around a center of the antenna when a main surface of the antenna is viewed in plan.
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公开(公告)号：US20240097719A1
公开(公告)日：2024-03-21
申请号：US18517294
申请日：2023-11-22
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takanori UEJIMA , Kenji TAHARA , Hiroyuki NAGAMORI , Takahiro KATAMATA
IPC: H04B1/00
CPC classification number: H04B1/0078 , H04B1/006
Abstract: A radio-frequency circuit includes an antenna connection terminal, switch circuits, a duplexer, a low-pass filter, and a high-pass filter. The switch circuit includes a port connected to the antenna connection terminal and ports. The switch circuit includes a single transmission port connected to the port, a simultaneous transmission port connected to ports. The duplexer is connected to the port. The low-pass filter is disposed on a signal path connecting the port and the simultaneous transmission port. The high-pass filter is connected to the port. No filter is disposed on a signal path connecting the port and the single transmission port.
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