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公开(公告)号：US20170214375A1
公开(公告)日：2017-07-27
申请号：US15482055
申请日：2017-04-07
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi Arayashiki , Satoshi Goto
CPC classification number: H03G3/3042 , H03F1/0205 , H03F3/19 , H03F3/191 , H03F3/21 , H03F3/211 , H03F3/245 , H03F2200/18 , H03F2200/21 , H03F2200/324 , H03F2200/451 , H03F2203/21181 , H03G1/0088
Abstract: Provided is a power amplification module that includes: a first transistor, a first signal being inputted to a base thereof; a second transistor, the first signal being inputted to a base thereof and a collector thereof being connected to a collector of the first transistor; a first resistor, a first bias current being supplied to one end thereof and another end thereof being connected to the base of the first transistor; a second resistor, one end thereof being connected to the one end of the first resistor and another end thereof being connected to the base of the second transistor; and a third resistor, a second bias current being supplied to one end thereof and another end thereof being connected to the base of the second transistor.
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公开(公告)号：US20170047894A1
公开(公告)日：2017-02-16
申请号：US15251031
申请日：2016-08-30
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kiichiro Takenaka , Masahiro Ito , Masakazu Hori , Mitsuo Ariie , Hayato Nakamura , Satoshi Arayashiki , Hidetoshi Matsumoto , Tsuyoshi Sato , Satoshi Tanaka
CPC classification number: H03F1/0222 , H03F1/02 , H03F1/0216 , H03F1/0261 , H03F1/32 , H03F1/42 , H03F1/52 , H03F1/56 , H03F3/04 , H03F3/19 , H03F3/21 , H03F2200/102 , H03F2200/408 , H03F2200/411 , H03F2200/444 , H03F2200/451 , H03G3/004
Abstract: Improvement in linearity is achieved at low costs in a power amplifier module employing an envelope tracking system. The power amplifier module includes a first power amplifier circuit that amplifies a radio frequency signal and that outputs a first amplified signal, a second power amplifier circuit that amplifies the first amplified signal on the basis of a source voltage varying depending on amplitude of the radio frequency signal and that outputs a second amplified signal, and a matching circuit that includes first and second capacitors connected in series between the first and second power amplifier circuit and an inductor connected between a node between the first and second capacitors and a ground and that decreases a gain of the first power amplifier circuit as the source voltage of the second power amplifier circuit increases.
Abstract translation: 在采用包络跟踪系统的功率放大器模块中，以低成本实现线性度的改善。 功率放大器模块包括：放大射频信号并输出第一放大信号的第一功率放大器电路;第二功率放大器电路，其根据根据射频幅度变化的源电压放大第一放大信号 信号，并且输出第二放大信号，以及匹配电路，其包括串联连接在第一和第二功率放大器电路之间的第一和第二电容器以及连接在第一和第二电容器之间的节点与地之间的电感器， 随着第二功率放大器电路的源极电压的增加，第一功率放大器电路的增益增加。
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公开(公告)号：US20160315594A1
公开(公告)日：2016-10-27
申请号：US15092362
申请日：2016-04-06
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi Arayashiki , Satoshi Goto
CPC classification number: H03G3/3042 , H03F1/0205 , H03F3/19 , H03F3/191 , H03F3/21 , H03F3/211 , H03F3/245 , H03F2200/18 , H03F2200/21 , H03F2200/324 , H03F2200/451 , H03F2203/21181 , H03G1/0088
Abstract: Provided is a power amplification module that includes: a first transistor, a first signal being inputted to a base thereof; a second transistor, the first signal being inputted to a base thereof and a collector thereof being connected to a collector of the first transistor; a first resistor, a first bias current being supplied to one end thereof and another end thereof being connected to the base of the first transistor; a second resistor, one end thereof being connected to the one end of the first resistor and another end thereof being connected to the base of the second transistor; and a third resistor, a second bias current being supplied to one end thereof and another end thereof being connected to the base of the second transistor.
Abstract translation: 提供了一种功率放大模块，其包括：第一晶体管，输入到其基极的第一信号; 第二晶体管，第一信号被输入到其基极，其集电极连接到第一晶体管的集电极; 第一电阻器，第一偏置电流被提供给其一端，另一端连接到第一晶体管的基极; 第二电阻器，其一端连接到第一电阻器的一端，另一端连接到第二晶体管的基极; 和第三电阻器，第二偏置电流被提供给其一端，另一端连接到第二晶体管的基极。
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公开(公告)号：US09461602B2
公开(公告)日：2016-10-04
申请号：US14327779
申请日：2014-07-10
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kiichiro Takenaka , Masahiro Ito , Masakazu Hori , Mitsuo Ariie , Hayato Nakamura , Satoshi Arayashiki , Hidetoshi Matsumoto , Tsuyoshi Sato , Satoshi Tanaka
CPC classification number: H03F1/0222 , H03F1/02 , H03F1/0216 , H03F1/0261 , H03F1/32 , H03F1/42 , H03F1/52 , H03F1/56 , H03F3/04 , H03F3/19 , H03F3/21 , H03F2200/102 , H03F2200/408 , H03F2200/411 , H03F2200/444 , H03F2200/451 , H03G3/004
Abstract: Improvement in linearity is achieved at low costs in a power amplifier module employing an envelope tracking system. The power amplifier module includes a first power amplifier circuit that amplifies a radio frequency signal and that outputs a first amplified signal, a second power amplifier circuit that amplifies the first amplified signal on the basis of a source voltage varying depending on amplitude of the radio frequency signal and that outputs a second amplified signal, and a matching circuit that includes first and second capacitors connected in series between the first and second power amplifier circuit and an inductor connected between a node between the first and second capacitors and a ground and that decreases a gain of the first power amplifier circuit as the source voltage of the second power amplifier circuit increases.
Abstract translation: 在采用包络跟踪系统的功率放大器模块中，以低成本实现线性度的改善。 功率放大器模块包括：放大射频信号并输出第一放大信号的第一功率放大器电路;第二功率放大器电路，其根据根据射频幅度变化的源电压放大第一放大信号 信号，并且输出第二放大信号，以及匹配电路，其包括串联连接在第一和第二功率放大器电路之间的第一和第二电容器以及连接在第一和第二电容器之间的节点与地之间的电感器， 随着第二功率放大器电路的源极电压的增加，第一功率放大器电路的增益增加。
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公开(公告)号：US11984924B2
公开(公告)日：2024-05-14
申请号：US16711898
申请日：2019-12-12
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Seima Kondo , Satoshi Tanaka , Satoshi Arayashiki , Hiroyuki Furusato , Jin Yokoyama , Toru Yamaji , Akio Kaneda , Kiwamu Sakano , Junichi Yoshioka , Tatsuya Tsujiguchi , Atushi Ono
CPC classification number: H04B1/48 , H03F3/21 , H05K1/0243 , H03F2200/294 , H03F2200/451 , H05K2201/10098
Abstract: A transmit/receive module includes plural duplexers, a power amplifier, and a sending transmission line. The plural duplexers operate in bands different from each other and each includes a transmit filter and a receive filter. The power amplifier amplifies signals of pass bands of the plural transmit filters and outputs the amplified signals. The sending transmission line is connected to the plural transmit filters. The signals of the pass bands of the plural transmit filters output from the power amplifier are transmitted through the sending transmission line.
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Patent Agency Ranking
公开(公告)号：US11757411B2
公开(公告)日：2023-09-12
申请号：US18147849
申请日：2022-12-29
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi Tanaka , Satoshi Arayashiki , Satoshi Goto , Yusuke Tanaka
CPC classification number: H03F1/0216 , H03F3/21 , H03F2200/451 , H04W88/02
Abstract: A power amplifier circuit includes a first transistor having an emitter electrically connected to a common potential, a base to which a first high-frequency signal is input, and a collector from which a third high-frequency signal is output; a second transistor having an emitter electrically connected to the common potential, a base to which a second high-frequency signal is input, and a collector from which a fourth high-frequency signal is output; a first capacitance circuit electrically connected between the collector of the second transistor and the base of the first transistor; and a second capacitance circuit electrically connected between the collector of the first transistor and the base of the second transistor.
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公开(公告)号：US11606066B2
公开(公告)日：2023-03-14
申请号：US17195770
申请日：2021-03-09
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi Tanaka , Satoshi Arayashiki , Kazuo Watanabe
Abstract: A power amplifier circuit includes a first amplifier that amplifies an input signal and outputs an output signal; a second amplifier that, in accordance with a control signal, amplifies a signal corresponding to the input signal, generates a signal having an opposite phase to that of the output signal, and adds the signal to the output signal; and a control circuit that supplies the control signal to the second amplifier. The control circuit outputs the control signal so that during operation of the power amplifier circuit in a first power mode, a gain of the second amplifier is not less than zero and less than a predetermined level and during operation in a second power mode lower than the first power mode in output power level, a gain of the second amplifier is not less than the predetermined level and less than a gain of the first amplifier.
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公开(公告)号：US11190138B2
公开(公告)日：2021-11-30
申请号：US16721062
申请日：2019-12-19
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi Tanaka , Kazuo Watanabe , Satoshi Arayashiki
Abstract: A power amplifier circuit includes a first transistor; a first bias circuit that supplies a first bias current or voltage; a capacitor; a first inductor; a second inductor; a second transistor; a second bias circuit that supplies a second bias current or voltage; a third inductor; a third transistor; a third bias circuit that supplies a third bias current or voltage; and a fourth inductor.
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公开(公告)号：US11114982B2
公开(公告)日：2021-09-07
申请号：US16821282
申请日：2020-03-17
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi Tanaka , Kazuo Watanabe , Satoshi Arayashiki
Abstract: A power amplifier circuit includes an amplifier transistor having a first terminal supplied with a power supply voltage that changes in accordance with an amplitude level of an input signal, and a second terminal supplied with the input signal and a bias current, an amplified signal obtained by amplifying the input signal being outputted from the first terminal, a bias circuit that outputs the bias current from an output terminal thereof in accordance with a reference current supplied to an input terminal thereof, and a regulation circuit that generates a regulation current for regulating the bias current in accordance with a change in the power supply voltage. The regulation current increases with an increase in the power supply voltage, and decreases with a decrease in the power supply voltage. The regulation circuit extracts the regulation current from at least one of the reference current or the bias current.
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公开(公告)号：US11088720B2
公开(公告)日：2021-08-10
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
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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