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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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2.发明申请公开(公告)号：US20190334486A1
公开(公告)日：2019-10-31
申请号：US16392864
申请日：2019-04-24
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shigeru TSUCHIDA
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.
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公开(公告)号：US20220094308A1
公开(公告)日：2022-03-24
申请号：US17540264
申请日：2021-12-02
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takayuki SHINOZAKI , Shigeru TSUCHIDA
Abstract: A radio-frequency module includes a mounting substrate, a power amplifier, and a controller. The mounting substrate has first and second main surfaces opposing each other. The power amplifier is disposed on one of the first and second main surfaces (the first main surface, for example) of the mounting substrate. The controller is disposed on the other one of the first and second main surfaces (the second main surface, for example) of the mounting substrate. The controller controls the power amplifier.
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公开(公告)号：US20210111743A1
公开(公告)日：2021-04-15
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
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.
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公开(公告)号：US20190305736A1
公开(公告)日：2019-10-03
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
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.
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Patent Agency Ranking
公开(公告)号：US20230020088A1
公开(公告)日：2023-01-19
申请号：US17955570
申请日：2022-09-29
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shigeru TSUCHIDA , Daerok OH , Takahiro KATAMATA , Satoshi GOTO , Mitsunori SAMATA , Yoshiki YASUTOMO
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.
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公开(公告)号：US20220094373A1
公开(公告)日：2022-03-24
申请号：US17540252
申请日：2021-12-02
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shigeru TSUCHIDA , Takayuki SHINOZAKI
Abstract: A radio-frequency module includes a mounting substrate, plural external connecting terminals, a power amplifier, and a controller. The mounting substrate has first and second main surfaces on opposite sides of the mounting substrate. The plural external connecting terminals are disposed on the second main surface of the mounting substrate. The power amplifier is disposed on one of the first and second main surfaces of the mounting substrate. The controller is disposed on the second main surface of the mounting substrate. The plural external connecting terminals include a control terminal. The controller is configured to control the power amplifier based on a control signal obtained via the control terminal.
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公开(公告)号：US20220021404A1
公开(公告)日：2022-01-20
申请号：US17346308
申请日：2021-06-14
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Atsushi HORITA , Yukiya YAMAGUCHI , Morio TAKEUCHI , Shigeru TSUCHIDA , Tomoaki SATO , Rui TANAKA
Abstract: A radio-frequency module includes a mounting substrate, a first power amplifier, a second power amplifier, a circuit component (IC chip), and an external connection terminal. The mounting substrate has a first main surface and a second main surface on opposite sides of the mounting substrate. The first power amplifier is mounted on the first main surface of the mounting substrate. The second power amplifier is mounted on the first main surface of the mounting substrate. The circuit component is mounted on the second main surface of the mounting substrate. The external connection terminal is disposed on the second main surface of the mounting substrate. The external connection terminal is connected to a power supply that supplies a power supply voltage to the first power amplifier and the second power amplifier.
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公开(公告)号：US20220021357A1
公开(公告)日：2022-01-20
申请号：US17338697
申请日：2021-06-04
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Morio TAKEUCHI , Shigeru TSUCHIDA , Yukiya YAMAGUCHI
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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公开(公告)号：US20250080068A1
公开(公告)日：2025-03-06
申请号：US18954371
申请日：2024-11-20
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Morio TAKEUCHI , Shigeru TSUCHIDA , Yukiya YAMAGUCHI
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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