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公开(公告)号：US20240243765A1
公开(公告)日：2024-07-18
申请号：US18619214
申请日：2024-03-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi TANAKA , Satoshi SAKURAI , Hirotsugu MORI
CPC classification number: H04B1/04 , H03F1/0205 , H04B2001/0425
Abstract: A radio-frequency circuit is capable of performing either uplink MIMO or uplink non-MIMO of a first band. The radio-frequency circuit includes a first power amplifier capable of amplifying a signal in the first band, a first circuit capable of adjusting linearity of output power with respect to input power into the first power amplifier, a second power amplifier capable of amplifying a signal in the first band, and a second circuit capable of adjusting linearity of output power with respect to input power into the second power amplifier. Assuming the uplink MIMO is performed using a first transmission signal output from the first power amplifier and a second transmission signal output from the second power amplifier, saturated output powers of the first power amplifier and the second power amplifier are increased due to the first circuit and the second circuit.
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公开(公告)号：US20190190563A1
公开(公告)日：2019-06-20
申请号：US16215777
申请日：2018-12-11
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi SAKURAI , Satoshi ARAYASHIKI , Satoshi TANAKA , Kyoichi HIRAYAMA , Tomohito ITO , Kenta KURAHASHI
CPC classification number: H04B1/48 , H04B1/0057
Abstract: A high-frequency module includes a transmission signal amplifier that outputs a transmission signal to an antenna terminal side; a reception signal amplifier that amplifies a reception signal supplied from an antenna terminal; a switch that selectively connects the antenna terminal to either an output of the transmission signal amplifier or an input of the reception signal amplifier; and a directional coupler that is provided on a transmission signal path and detects a signal level of the transmission signal. The transmission signal amplifier is controlled by a first control signal supplied from a first control circuit. The reception signal amplifier is controlled by a second control signal supplied from a second control circuit. The switch is controlled by a switch control signal supplied from the first control circuit. The directional coupler is controlled by a coupler control signal supplied from the first control circuit.
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公开(公告)号：US20220294395A1
公开(公告)日：2022-09-15
申请号：US17805277
申请日：2022-06-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi TANAKA , Kiichiro TAKENAKA , Satoshi ARAYASHIKI , Satoshi SAKURAI
Abstract: A Doherty amplifier including a main amplifier and a peak amplifier is mounted on a package substrate. A low noise amplifier is further mounted on the package substrate. A transmit/receive switch switches in terms of time between a transmission connection state in which an output signal of the Doherty amplifier is supplied to an antenna and a reception connection state in which a signal received by the antenna is inputted to the low noise amplifier.
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公开(公告)号：US20200186185A1
公开(公告)日：2020-06-11
申请号：US16788625
申请日：2020-02-12
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi SAKURAI , Satoshi ARAYASHIKI , Satoshi TANAKA , Kyoichi HIRAYAMA , Tomohito ITO , Kenta KURAHASHI
Abstract: A high-frequency module includes a transmission signal amplifier that outputs a transmission signal to an antenna terminal side; a reception signal amplifier that amplifies a reception signal supplied from an antenna terminal; a switch that selectively connects the antenna terminal to either an output of the transmission signal amplifier or an input of the reception signal amplifier; and a directional coupler that is provided on a transmission signal path and detects a signal level of the transmission signal. The transmission signal amplifier is controlled by a first control signal supplied from a first control circuit. The reception signal amplifier is controlled by a second control signal supplied from a second control circuit. The switch is controlled by a switch control signal supplied from the first control circuit. The directional coupler is controlled by a coupler control signal supplied from the first control circuit.
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公开(公告)号：US20140253243A1
公开(公告)日：2014-09-11
申请号：US14196408
申请日：2014-03-04
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiroshi HAGISAWA , Satoshi SAKURAI
CPC classification number: H03F1/30 , H03F1/301 , H03F1/302 , H03F3/19 , H03F3/21 , H03F3/245 , H03F2200/447
Abstract: A power amplifying module includes a radio frequency amplifying circuit including an amplifying circuit configured to amplify an input signal and output an amplified signal, and a bias circuit of an emitter-follower type configured to bias the amplifying circuit to an operating point, and a constant voltage generating circuit configured to generate, from a first reference voltage, a first constant voltage applied to a base side of a transistor of the bias circuit and a second constant voltage applied to a collector side of the transistor.
Abstract translation: 功率放大模块包括射频放大电路，其包括被配置为放大输入信号并输出放大信号的放大电路，以及配置为将放大电路偏置到工作点的射极跟随器类型的偏置电路，以及常数 电压产生电路，被配置为从第一参考电压产生施加到偏置电路的晶体管的基极侧的第一恒定电压和施加到晶体管的集电极侧的第二恒定电压。
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Patent Agency Ranking
公开(公告)号：US20220271790A1
公开(公告)日：2022-08-25
申请号：US17663585
申请日：2022-05-16
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi SAKURAI , Satoshi ARAYASHIKI , Satoshi TANAKA , Kyoichi HIRAYAMA , Tomohito ITO , Kenta KURAHASHI
Abstract: A high-frequency module includes a transmission signal amplifier that outputs a transmission signal to an antenna terminal side; a reception signal amplifier that amplifies a reception signal supplied from an antenna terminal; a switch that selectively connects the antenna terminal to either an output of the transmission signal amplifier or an input of the reception signal amplifier; and a directional coupler that is provided on a transmission signal path and detects a signal level of the transmission signal. The transmission signal amplifier is controlled by a first control signal supplied from a first control circuit. The reception signal amplifier is controlled by a second control signal supplied from a second control circuit. The switch is controlled by a switch control signal supplied from the first control circuit. The directional coupler is controlled by a coupler control signal supplied from the first control circuit.
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7.发明申请公开(公告)号：US20200343932A1
公开(公告)日：2020-10-29
申请号：US16853817
申请日：2020-04-21
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hitoshi AKAMINE , Satoshi SAKURAI
IPC: H04B1/44
Abstract: A radio-frequency signal sending/receiving circuit includes a low-noise amplifier electrically connected to a first terminal, a first switch electrically connected to the input terminal of the low-noise amplifier, a band pass filter electrically connected at one end to the other end of the first switch and at the other end to a first antenna via a fourth terminal, a power amplifier electrically connected to a second terminal, a second switch electrically connected at one end to the output terminal of the power amplifier and at the other end to the band pass filter, a third switch electrically connected at one end to the output terminal of the power amplifier and at the other end to a fifth terminal, and a fourth switch electrically connected at one end to a third terminal and at the other end to the fifth terminal.
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公开(公告)号：US20190068127A1
公开(公告)日：2019-02-28
申请号：US16170812
申请日：2018-10-25
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Mizuho ISHIKAWA , Satoshi SAKURAI
Abstract: A power amplification module includes first and second amplifiers for first and second communication modes, a bypass line that bypasses the first or second amplifier, an input switch circuit that supplies a radio frequency signal to the first or second amplifier in accordance with a communication mode when a desired output level is equal to or greater than a reference level, and that supplies a radio frequency signal to the bypass line when the desired output level is less than the reference level, and an output switch circuit that outputs a first amplified signal from the first amplifier or a second amplified signal from the second amplifier in accordance with the communication mode when the desired output level is equal to or greater than the reference level, and that outputs a radio frequency signal output from the bypass line when the desired output level is less than the reference level.
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公开(公告)号：US20240056040A1
公开(公告)日：2024-02-15
申请号：US18204403
申请日：2023-06-01
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi SAKURAI , Toshiki MATSUI , Yasunobu YOSHIZAKI , Fuminori MORISAWA
CPC classification number: H03F3/245 , H04B1/04 , H03F2200/451
Abstract: A radio-frequency module includes a power amplifier, a first bias circuit connected to the power amplifier, and a second bias circuit connected to the power amplifier. The first bias circuit includes a register that receives a first digital control signal corresponding to a power mode of the power amplifier and a current generation circuit that generates, based on information in the register, a first bias current, and the second bias circuit includes another register that receives a second digital control signal corresponding to the power mode and a current generation circuit that generates, based on information in the other register, a second bias current.
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10.发明申请公开(公告)号：US20210250058A1
公开(公告)日：2021-08-12
申请号：US17241809
申请日：2021-04-27
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hitoshi AKAMINE , Satoshi SAKURAI
IPC: H04B1/44
Abstract: A radio-frequency signal sending/receiving circuit includes a low-noise amplifier electrically connected to a first terminal, a first switch electrically connected to the input terminal of the low-noise amplifier, a band pass filter electrically connected at one end to the other end of the first switch and at the other end to a first antenna via a fourth terminal, a power amplifier electrically connected to a second terminal, a second switch electrically connected at one end to the output terminal of the power amplifier and at the other end to the band pass filter, a third switch electrically connected at one end to the output terminal of the power amplifier and at the other end to a fifth terminal, and a fourth switch electrically connected at one end to a third terminal and at the other end to the fifth terminal.
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