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公开(公告)号：US20220021341A1
公开(公告)日：2022-01-20
申请号：US17376878
申请日：2021-07-15
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi GOTO , Yoshiki KOGUSHI , Yuri HONDA , Kenichi SHIMAMOTO
Abstract: A power amplifier circuit according to the present disclosure includes an amplifier circuit serving as a differential amplifier circuit configured to be activated by a supply voltage that is variable in accordance with amplitude of a signal, a bias circuit configured to output a bias to be supplied to the amplifier circuit, and first and second dispersion circuits respectively provided for a pair of differential signals outputted from the amplifier circuit and configured to control dependence of gain of the differential amplifier circuit on the supply voltage.
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公开(公告)号：US20220385314A1
公开(公告)日：2022-12-01
申请号：US17818388
申请日：2022-08-09
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takeshi KOGURE , Kenichi SHIMAMOTO , Yoshiki KOGUSHI , Toshiki MATSUI
Abstract: A power amplifier circuit is provided that includes a transmission circuit, a control circuit, a first terminal, and a second terminal. The transmission circuit includes an amplifier element that amplifies power of a radio frequency signal. The control circuit controls the transmission circuit. The first terminal receives a serial data signal that is based on a serial data standard. The second terminal receives a digital signal different from the serial data signal. The control circuit then controls the transmission circuit in response to the digital signal received from the second terminal.
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公开(公告)号：US20230411376A1
公开(公告)日：2023-12-21
申请号：US18459421
申请日：2023-09-01
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Atsushi ONO , Yoshiaki SUKEMORI , Yoshiki KOGUSHI , Hisanori NAMIE
CPC classification number: H01L25/18 , H01L23/481 , H01L24/08 , H01L24/05 , H01L24/13 , H01L24/16 , H01L2224/0557 , H01L2224/08238 , H01L2224/13025 , H01L2224/16227 , H01L23/5384
Abstract: A high frequency module capable of improving a heat dissipation performance of a power amplifier includes a mounting board, a power amplifier, and a connection member. The mounting board has a first main surface facing a second main surface. The power amplifier is disposed on the second main surface of the mounting board. The connection member is connectable to an external board. The power amplifier includes a base material, a transistor, and a through via. The base material has a third main surface facing a fourth main surface, and the third main surface is disposed between the second main surface and the fourth main surface. The transistor is disposed on the third main surface of the base material. The through via is provided between the third main surface and the fourth main surface. The through via is connected to the connection member.
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公开(公告)号：US20220123698A1
公开(公告)日：2022-04-21
申请号：US17503919
申请日：2021-10-18
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi GOTO , Yuri HONDA , Yoshiki KOGUSHI
Abstract: A power amplifier circuit includes a differential amplifier circuit configured to amplify a radio-frequency signal, a transformer disposed on an output side with respect to the differential amplifier circuit and including a primary winding and a secondary winding, and a dispersion circuit coupled to a midpoint of the primary winding of the transformer and configured to operate as an adjustment circuit. The dispersion circuit is configured to adjust, based on a supply voltage controlled in accordance with the envelope of the radio-frequency signal, a bias (bias current or bias voltage) to be supplied to the differential amplifier circuit.
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Patent Agency Ranking
公开(公告)号：US20190103846A1
公开(公告)日：2019-04-04
申请号：US16135787
申请日：2018-09-19
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yuri HONDA , Fumio HARIMA , Yoshiki KOGUSHI , Shota ISHIHARA , Fuminori MORISAWA
Abstract: The present disclosure provides a power amplifier circuit capable of suppressing the occurrence of noises while enabling control of an output power level. The power amplifier circuit includes a first transistor that amplifies a first signal; a bias circuit that supplies a bias current or voltage based on a control signal to the first transistor; a second transistor to which a control current based on the control signal is supplied, which has an emitter or a source thereof connected to a collector or a drain of the first transistor, and from which a second signal obtained by amplifying the first signal is output; and a first feedback circuit provided between the collector or the drain of the second transistor and the base or the gate of the second transistor.
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公开(公告)号：US20230411377A1
公开(公告)日：2023-12-21
申请号：US18459440
申请日：2023-09-01
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Atsushi ONO , Masanori KISHIMOTO , Yoshiaki SUKEMORI , Yoshiki KOGUSHI , Kenichi SHIMAMOTO , Hisanori NAMIE
IPC: H01L25/18 , H01L23/48 , H01L23/00 , H01L23/538
CPC classification number: H01L25/18 , H01L23/481 , H01L24/08 , H01L24/05 , H01L24/13 , H01L24/16 , H01L23/5384 , H01L2224/0557 , H01L2224/08238 , H01L2224/13025 , H01L2224/16227 , H01L2924/10329 , H01L2924/10253
Abstract: A high frequency module capable of improving heat dissipation characteristics of a power amplifier and suppressing influence of heat of the power amplifier on another electronic component is provided. A high frequency module includes a mounting substrate, a power amplifier, a switch, a plurality of external connection terminals, and a connector. The mounting substrate has a first main surface and a second main surface that are opposite to each other. The power amplifier and the switch are disposed on the second main surface of the mounting substrate. The plurality of external connection terminals are disposed on the second main surface of the mounting substrate. The connector is able to be connected to an external substrate. The plurality of external connection terminals include a first external connection terminal that is connected to the connector. The first external connection terminal is disposed between the power amplifier and the switch.
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公开(公告)号：US20210013855A1
公开(公告)日：2021-01-14
申请号：US17038988
申请日：2020-09-30
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yuri HONDA , Fumio HARIMA , Yoshiki KOGUSHI , Shota ISHIHARA , Fuminori MORISAWA
Abstract: The present disclosure provides a power amplifier circuit capable of suppressing the occurrence of noises while enabling control of an output power level. The power amplifier circuit includes a first transistor that amplifies a first signal; a bias circuit that supplies a bias current or voltage based on a control signal to the first transistor; a second transistor to which a control current based on the control signal is supplied, which has an emitter or a source thereof connected to a collector or a drain of the first transistor, and from which a second signal obtained by amplifying the first signal is output; and a first feedback circuit provided between the collector or the drain of the second transistor and the base or the gate of the second transistor.
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公开(公告)号：US20190109567A1
公开(公告)日：2019-04-11
申请号：US16212920
申请日：2018-12-07
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiroki SHOUNAI , Yoshiki KOGUSHI
CPC classification number: H03F1/26 , H03F1/32 , H03F1/565 , H03F3/195 , H03F3/213 , H03F3/245 , H03F2200/171 , H03F2200/387 , H03F2200/451
Abstract: A power amplifier module includes an amplifier that amplifies an input signal and outputs an amplified signal, a matching circuit disposed between an output terminal of the amplifier and a subsequent circuit, a choke inductor having a first end to which a power supply voltage is applied and a second end from which power supply is provided to the amplifier through the output terminal of the amplifier, and a first attenuation circuit disposed between the output terminal of the amplifier and the second end of the choke inductor and configured to attenuate a harmonic component of the amplified signal.
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公开(公告)号：US20170338775A1
公开(公告)日：2017-11-23
申请号：US15586367
申请日：2017-05-04
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiroki SHOUNAI , Yoshiki KOGUSHI
CPC classification number: H03F1/26 , H03F1/32 , H03F1/565 , H03F3/195 , H03F3/213 , H03F3/245 , H03F2200/171 , H03F2200/387 , H03F2200/451
Abstract: A power amplifier module includes an amplifier that amplifies an input signal and outputs an amplified signal, a matching circuit disposed between an output terminal of the amplifier and a subsequent circuit, a choke inductor having a first end to which a power supply voltage is applied and a second end from which power supply is provided to the amplifier through the output terminal of the amplifier, and a first attenuation circuit disposed between the output terminal of the amplifier and the second end of the choke inductor and configured to attenuate a harmonic component of the amplified signal.
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