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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：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：US10797657B2
公开(公告)日：2020-10-06
申请号：US16217506
申请日：2018-12-12
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kiichiro Takenaka , Masahiro Ito , Tsuyoshi Sato , Kozo Sato , Hidetoshi Matsumoto
Abstract: A matching network is a matching network of a power amplifier circuit that outputs a signal obtained by a differential amplifier amplifying power of a high-frequency signal. The matching network includes an input-side winding connected between differential outputs of the differential amplifier; an output-side winding that is coupled to the input-side winding via an electromagnetic field and whose one end is connected to a reference potential; a first LC series resonant circuit including a capacitive element and an inductive element connected in series with each other, and being connected in parallel with the input-side winding; and a second LC series resonant circuit including a capacitive element and an inductive element connected in series with each other, and being connected in parallel with the output-side winding.
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公开(公告)号：US10594341B2
公开(公告)日：2020-03-17
申请号：US16274391
申请日：2019-02-13
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Tsuyoshi Sato , Hidetoshi Matsumoto , Kiichiro Takenaka , Masahiro Ito , Satoshi Tanaka
Abstract: A high-frequency-signal transceiver circuit transmits and receives a signal between first to sixth antenna terminals and terminals near a high-frequency circuit. The high-frequency-signal transceiver circuit includes first to sixth circuits connected to the corresponding first to sixth antenna terminals. One of the first to sixth circuits transmits and receives only a signal of time division multiplexing communication.
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公开(公告)号：US20190028074A1
公开(公告)日：2019-01-24
申请号：US16038770
申请日：2018-07-18
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Tsuyoshi Sato , Hidetoshi Matsumoto , Kiichiro Takenaka , Masahiro Ito , Satoshi Tanaka , Takahiro Katamata
CPC classification number: H03F3/245 , H03F3/195 , H03F3/211 , H03F3/4508 , H03F2200/294
Abstract: A communication unit includes a first input terminal to which a first transmission signal based on a first communication standard is input, a second input terminal to which a second transmission signal based on a second communication standard is input, a first transmission signal amplifier circuit outputting a first amplified transmission signal, or outputting a second amplified transmission signal, a first input-output terminal outputting the first amplified transmission signal or the second amplified transmission signal, and at least one of a first reception signal and a second reception signal inputted to the first input-output terminal, a first reception signal amplifier circuit performing at least one of operation of outputting a first amplified reception signal and operation of outputting a second amplified reception signal, a first output terminal outputting the first amplified reception signal, and a second output terminal outputting the second amplified reception signal.
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Patent Agency Ranking
公开(公告)号：US10128796B2
公开(公告)日：2018-11-13
申请号：US14977814
申请日：2015-12-22
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shinya Hitomi , Hidenori Obiya , Tsuyoshi Sato , Shingo Yanagihara
Abstract: A PA module (10) includes multiple amplifying elements (11a, 11b) and a variable filter circuit (12). The amplifying elements (11a, 11b) amplify a transmission signal in a frequency range including multiple communication bands and are cascade-connected to each other. The variable filter circuit (12) is connected between the amplifying elements (11a, 11b). The variable filter circuit (12) uses a transmission band corresponding to a used communication band selected from the multiple communication bands as a pass band and a reception band corresponding to the used communication band as an attenuation band.
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公开(公告)号：US09705451B2
公开(公告)日：2017-07-11
申请号：US14932275
申请日：2015-11-04
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kiichiro Takenaka , Tsuyoshi Sato , Masahiro Ito , Hidetoshi Matsumoto , Satoshi Tanaka
CPC classification number: H03F1/0205 , H03F1/0211 , H03F1/0222 , H03F3/191 , H03F3/193 , H03F3/211 , H03F3/245 , H03F3/45085 , H03F3/45179 , H03F2200/336 , H03F2200/451 , H03F2200/534 , H03F2200/541 , H03F2200/555 , H03F2200/78 , H03F2203/21106 , H03F2203/45481 , H03F2203/45554 , H03F2203/45638
Abstract: An envelope tracking system is employed in a power amplification module that supports multiple frequency bands. The power amplification module includes multiple power amplification circuits, each of which includes: a first transformer to which a radio frequency signal is input; a differential amplification circuit, in which a first radio frequency signal output from transformer is input to a control electrode and in which a second radio frequency signal output from the transformer is input to a control electrode, the differential amplification circuit outputting an amplified signal obtained by amplifying a difference between the first and second radio frequency signals; and a second transformer for supplying, to the first differential amplification circuit, power-supply voltage varying according to the amplitude of the radio frequency signal and to which the first amplified signal is input.
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公开(公告)号：US09577580B2
公开(公告)日：2017-02-21
申请号：US15251012
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：US11496100B2
公开(公告)日：2022-11-08
申请号：US17011766
申请日：2020-09-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kiichiro Takenaka , Masahiro Ito , Tsuyoshi Sato , Kozo Sato , Hidetoshi Matsumoto
Abstract: A matching network is a matching network of a power amplifier circuit that outputs a signal obtained by a differential amplifier amplifying power of a high-frequency signal. The matching network includes an input-side winding connected between differential outputs of the differential amplifier; an output-side winding that is coupled to the input-side winding via an electromagnetic field and whose one end is connected to a reference potential; a first LC series resonant circuit including a capacitive element and an inductive element connected in series with each other, and being connected in parallel with the input-side winding; and a second LC series resonant circuit including a capacitive element and an inductive element connected in series with each other, and being connected in parallel with the output-side winding.
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公开(公告)号：US10547276B2
公开(公告)日：2020-01-28
申请号：US16111797
申请日：2018-08-24
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Masahiro Ito , Tsuyoshi Sato , Kiichiro Takenaka , Hidetoshi Matsumoto
Abstract: A power amplifier circuit includes a Doherty amplifier including a divider that divides a first signal into a second signal and a third signal, a carrier amplifier that amplifies the second signal and outputs a fourth signal, a peak amplifier that amplifies the third signal and outputs a fifth signal, a combiner that combines the fourth signal and the fifth signal and outputs an amplified signal of the first signal, a first bias circuit that supplies a first bias current or voltage to the carrier amplifier, and a second bias circuit that supplies a second bias current or voltage corresponding to a control signal to the peak amplifier; and a control circuit that supplies the control signal corresponding to a level of the second signal to the second bias circuit. The control circuit includes a detecting unit, an output unit, and a filter circuit.
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