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公开(公告)号：US20250070718A1
公开(公告)日：2025-02-27
申请号：US18943524
申请日：2024-11-11
Applicant: Murata Manufacturing Co., Ltd.
Inventor： John HOVERSTEN , David Perreault , Yevgeniy Tkachenko , Takeshi Kogure , Yuuki Fukuda , Toshiki Matsui , Yuuma Noguchi , Kiichiro Takenaka
Abstract: An amplifier circuit is provided for amplifying a radio frequency signal within one frame of a radio frequency signal by using multiple discrete voltages supplied from the tracker circuit. The amplifier circuit includes a power amplifier and an RC series circuit including a resistor and a capacitor that are connected in series between the ground and a voltage supply path between the tracker circuit and the power amplifier.
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公开(公告)号：US12177790B2
公开(公告)日：2024-12-24
申请号：US18171881
申请日：2023-02-21
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi Tanaka , Kiichiro Takenaka , Takayuki Tsutsui , Taizo Yamawaki , Shun Imai
IPC: H04W52/24 , H03F1/02 , H03F3/189 , H03F3/19 , H03F3/21 , H03F3/24 , H04B1/04 , H04W52/02 , H04W88/06
Abstract: A high-frequency signal processing apparatus and a wireless communication apparatus can achieve a decrease in power consumption. For example, when an indicated power level to a high-frequency power amplifier is equal to or greater than a second reference value, envelope tracking is performed by causing a source voltage control circuit to control a high-speed DCDC converter using a detection result of an envelope detecting circuit and causing a bias control circuit to indicate a fixed bias value. The source voltage control circuit and the bias control circuit indicate a source voltage and a bias value decreasing in proportion to a decrease in the indicated power level when the indicated power level is in a range of the second reference value to the first reference value, and indicate a fixed source voltage and a fixed bias value when the indicated power level is less than the first reference value.
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公开(公告)号：US11611942B2
公开(公告)日：2023-03-21
申请号：US17652136
申请日：2022-02-23
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi Tanaka , Kiichiro Takenaka , Takayuki Tsutsui , Taizo Yamawaki , Shun Imai
IPC: H04W52/24 , H04W52/02 , H03F3/189 , H03F3/24 , H04B1/04 , H03F1/02 , H03F3/19 , H03F3/21 , H04W88/06
Abstract: A high-frequency signal processing apparatus and a wireless communication apparatus can achieve a decrease in power consumption. For example, when an indicated power level to a high-frequency power amplifier is equal to or greater than a second reference value, envelope tracking is performed by causing a source voltage control circuit to control a high-speed DCDC converter using a detection result of an envelope detecting circuit and causing a bias control circuit to indicate a fixed bias value. The source voltage control circuit and the bias control circuit indicate a source voltage and a bias value decreasing in proportion to a decrease in the indicated power level when the indicated power level is in a range of the second reference value to the first reference value, and indicate a fixed source voltage and a fixed bias value when the indicated power level is less than the first reference value.
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公开(公告)号：US11309844B2
公开(公告)日：2022-04-19
申请号：US16931965
申请日：2020-07-17
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kiichiro Takenaka
Abstract: A power amplifier includes a power splitter that splits a first signal into a second signal and a third signal, a first amplifier that amplifies the second signal within an area where the first signal has a power level greater than or equal to a first level and that outputs a fourth signal, a second amplifier that amplifies the third signal within an area where the first signal has a power level greater than or equal to a second level higher than the first level and that outputs a fifth signal, an output unit that outputs an amplified signal of the first signal, a first and a second LC parallel resonant circuit, and a choke inductor having an end to which a power supply voltage is supplied and another end connected to a node of the first and second LC parallel resonant circuits.
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公开(公告)号：US11223327B2
公开(公告)日：2022-01-11
申请号：US17016747
申请日：2020-09-10
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kiichiro Takenaka
Abstract: A power amplifier includes a distributor distributing an input first signal to a second signal and a third signal delayed by about 2ϕ degrees (45
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Patent Agency Ranking
公开(公告)号：US10454434B2
公开(公告)日：2019-10-22
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
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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公开(公告)号：US10348248B2
公开(公告)日：2019-07-09
申请号：US16002349
申请日：2018-06-07
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kiichiro Takenaka , Masahiro Ito , Masakazu Hori , Mitsuo Ariie , Hayato Nakamura , Satoshi Arayashiki , Hidetoshi Matsumoto , Tsuyoshi Sato , Satoshi Tanaka
IPC: H03F3/04 , H03G3/30 , H03F1/02 , H03F3/21 , H03F1/32 , H03F1/52 , H03F3/19 , H03F1/56 , H03G3/00 , H03F1/42
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.
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公开(公告)号：US20180241362A1
公开(公告)日：2018-08-23
申请号：US15899734
申请日：2018-02-20
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kiichiro Takenaka
CPC classification number: H03F3/211 , H01F27/00 , H03F1/0288 , H03F3/4508 , H03F3/45179 , H03F3/45475 , H03F2200/451 , H03F2200/537 , H03F2200/541 , H03K2005/00286
Abstract: A power amplifier circuit includes: a first differential amplifier that amplifies a first signal split from the input signal and outputs a second signal; a second differential amplifier that amplifies a third signal split from the input signal and outputs a fourth signal; a first transformer including a first input-side winding to which the second signal is input and a first output-side winding; a second transformer including a second input-side winding to which the fourth signal is input and a second output-side winding; a first phase conversion element that is connected in parallel with the first output-side winding and outputs a fifth signal; and a second phase conversion element that is connected in parallel with the second output-side winding and outputs a sixth signal. The first and second output-side windings are connected in series and output a signal obtained by adding voltages of the fifth and sixth signals together.
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9.发明授权公开(公告)号：US09451561B2
公开(公告)日：2016-09-20
申请号：US14369216
申请日：2012-12-05
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi Tanaka , Kiichiro Takenaka , Takayuki Tsutsui , Taizo Yamawaki , Shun Imai
CPC classification number: H04W52/246 , H03F1/0216 , H03F1/0227 , H03F1/0277 , H03F3/189 , H03F3/19 , H03F3/21 , H03F3/24 , H03F2200/102 , H03F2200/294 , H03F2200/504 , H04B1/0475 , H04W52/0251 , H04W52/0261 , H04W88/06 , Y02D70/00 , Y02D70/1246 , Y02D70/1262 , Y02D70/40
Abstract: A high-frequency signal processing apparatus and a wireless communication apparatus can achieve a decrease in power consumption. For example, when an indicated power level to a high-frequency power amplifier is equal to or greater than a second reference value, envelope tracking is performed by causing a source voltage control circuit to control a high-speed DCDC converter using a detection result of an envelope detecting circuit and causing a bias control circuit to indicate a fixed bias value. The source voltage control circuit and the bias control circuit indicate a source voltage and a bias value decreasing in proportion to a decrease in the indicated power level when the indicated power level is in a range of the second reference value to the first reference value, and indicate a fixed source voltage and a fixed bias value when the indicated power level is less than the first reference value.
Abstract translation: 高频信号处理装置和无线通信装置可以实现功耗的降低。 例如，当向高频功率放大器指示的功率电平等于或大于第二参考值时，通过使源电压控制电路使用检测结果控制高速DCDC转换器来执行包络跟踪 包络检测电路，并使偏置控制电路指示固定的偏置值。 源电压控制电路和偏置控制电路指示当所指示的功率电平在第二参考值到第一参考值的范围内时，源电压和偏置值与指示功率电平的减小成比例地减小，以及 当指示的功率电平小于第一参考值时，指示固定的源极电压和固定的偏置值。
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公开(公告)号：US20160056769A1
公开(公告)日：2016-02-25
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.
Abstract translation: 在支持多个频带的功率放大模块中采用包络跟踪系统。 功率放大模块包括多个功率放大电路，每个功率放大电路包括：输入射频信号的第一变压器; 差分放大电路，其中从变压器输出的第一射频信号输入到控制电极，并且其中从变压器输出的第二射频信号输入到控制电极，差分放大电路输出由 放大第一和第二射频信号之间的差; 以及第二变压器，用于向所述第一差分放大电路提供根据所述射频信号的幅度而变化并且被输入所述第一放大信号的电源电压。
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