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公开(公告)号：US10361664B2
公开(公告)日：2019-07-23
申请号：US16002457
申请日：2018-06-07
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Toshiki Matsui , Kenji Sasaki , Fumio Harima
Abstract: A power amplifier circuit is capable of restraining uneven temperature distribution among a plurality of unit transistors while restraining the deterioration of the characteristics of the power amplifier circuit. The power amplifier circuit includes: a first transistor group which includes a plurality of unit transistors and which amplifies an input signal and outputs an amplified signal; a bias circuit which supplies a bias current or a bias voltage to a base or a gate of each unit transistor of the first transistor group; a plurality of first resistive elements, each of which is connected between the base or the gate of each unit transistor of the first transistor group and an output of the bias circuit; and a plurality of second resistive elements, each of which is connected between an emitter or a source of each unit transistor of the first transistor group and a reference potential.
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公开(公告)号：US08922281B2
公开(公告)日：2014-12-30
申请号：US14029042
申请日：2013-09-17
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Wataru Takahashi , Toshiki Matsui , Jun Sakatsume
CPC classification number: H03F1/56 , H03F1/0277 , H03F1/565 , H03F3/195 , H03F3/211 , H03F3/245 , H03F3/72 , H03F2200/108 , H03F2200/111 , H03F2200/387 , H03F2200/429 , H03F2200/507 , H03F2203/7215 , H03F2203/7227 , H03F2203/7236
Abstract: In a power amplifier, in response to a power mode signal at a predetermined level, a first switch circuit supplies a signal to first and second amplifier devices that perform parallel operations. In response to the power mode signal at another level, the first switch circuit supplies a signal to the first amplifier device and stops supplying the signal to the second amplifier device such that the first amplifier device performs a standalone operation. One end of an impedance adjusting circuit is connected to a connection node between the outputs of the first and second amplifier devices, the other end of the impedance adjusting circuit is connected to one end of a second switch circuit, and the other end of the second switch circuit is connected to a ground potential. The impedance adjusting circuit includes a reactance element.
Abstract translation: 在功率放大器中，响应于预定电平的功率模式信号，第一开关电路向执行并行操作的第一和第二放大器装置提供信号。 响应于另一电平的功率模式信号，第一开关电路向第一放大器装置提供信号，并停止向第二放大器装置提供信号，使得第一放大器装置执行独立操作。 阻抗调节电路的一端连接到第一和第二放大器装置的输出端之间的连接节点，阻抗调节电路的另一端连接到第二开关电路的一端，而第二开关电路的另一端 开关电路连接到地电位。 阻抗调整电路包括电抗元件。
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公开(公告)号：US11664830B2
公开(公告)日：2023-05-30
申请号：US17658705
申请日：2022-04-11
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji Tahara , Toshiki Matsui
CPC classification number: H04B1/006 , H03H7/46 , H03H7/465 , H04B1/0053 , H04B1/0057 , H04B1/04 , H04B1/401 , H04B1/48 , H04B2001/0408
Abstract: A radio frequency module includes a transmit filter of Band A and Band B, a transmit amplifier, and a switch circuit and can perform CA using a transmit signal of Band A and a receive signal of Band B, a transmit band of Band B including a receive band of Band C. The switch circuit includes a switch switching connection between a common terminal and a first selection terminal, a switch switching connection between the common terminal and a second selection terminal, and a switch switching connection between the second selection terminal and a third selection terminal. The common terminal is connected to the transmit amplifier. The first selection terminal is connected to the transmit filter of Band A. The second selection terminal is connected to the transmit filter of Band B. The third selection terminal is connected to a receive path of Band C.
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公开(公告)号：US10651804B2
公开(公告)日：2020-05-12
申请号：US16437335
申请日：2019-06-11
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Toshiki Matsui , Kenji Sasaki , Fumio Harima
IPC: H03F1/30 , H01L27/07 , H03F1/02 , H03F3/21 , H03F3/19 , H01L29/737 , H01L29/73 , H01L29/417 , H03F3/195 , H03F3/72
Abstract: A power amplifier circuit is capable of restraining uneven temperature distribution among a plurality of unit transistors while restraining the deterioration of the characteristics of the power amplifier circuit. The power amplifier circuit includes: a first transistor group which includes a plurality of unit transistors and which amplifies an input signal and outputs an amplified signal; a bias circuit which supplies a bias current or a bias voltage to a base or a gate of each unit transistor of the first transistor group; a plurality of first resistive elements, each of which is connected between the base or the gate of each unit transistor of the first transistor group and an output of the bias circuit; and a plurality of second resistive elements, each of which is connected between an emitter or a source of each unit transistor of the first transistor group and a reference potential.
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Patent Agency Ranking
公开(公告)号：US09374040B2
公开(公告)日：2016-06-21
申请号：US14561414
申请日：2014-12-05
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Toshiki Matsui
CPC classification number: H03F1/0222 , H03F1/3223 , H03F1/56 , H03F3/19 , H03F3/211 , H03F3/24 , H03F2200/111 , H03F2200/222 , H03F2200/318 , H03F2200/387 , H03F2200/411 , H03F2200/429 , H03F2200/451 , H03F2200/504
Abstract: The linearity of a power amplifying module employing an envelope tracking scheme is improved. The power amplifying module includes a first bipolar transistor having a base to which a first radio frequency signal is input and an emitter grounded, and a second bipolar transistor having a base to which a first constant voltage is applied, a collector to which a first power supply voltage is applied, the first power supply voltage adapted to vary in accordance with an amplitude of the first radio frequency signal, and an emitter connected to a collector of the first bipolar transistor. The second bipolar transistor is configured to output a first amplified signal, obtained by amplifying the first radio frequency signal, from the collector of the second bipolar transistor.
Abstract translation: 提高了采用包络跟踪方案的功率放大模块的线性度。 功率放大模块包括第一双极晶体管，其具有输入第一射频信号的基极和发射极接地的第一双极晶体管，以及具有施加第一恒定电压的基极的第二双极晶体管， 施加电源电压，第一电源电压适合于根据第一射频信号的幅度而变化，以及连接到第一双极晶体管的集电极的发射极。 第二双极晶体管被配置为从第二双极晶体管的集电极输出通过放大第一射频信号而获得的第一放大信号。
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公开(公告)号：US20150171796A1
公开(公告)日：2015-06-18
申请号：US14561414
申请日：2014-12-05
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Toshiki Matsui
CPC classification number: H03F1/0222 , H03F1/3223 , H03F1/56 , H03F3/19 , H03F3/211 , H03F3/24 , H03F2200/111 , H03F2200/222 , H03F2200/318 , H03F2200/387 , H03F2200/411 , H03F2200/429 , H03F2200/451 , H03F2200/504
Abstract: The linearity of a power amplifying module employing an envelope tracking scheme is improved. The power amplifying module includes a first bipolar transistor having a base to which a first radio frequency signal is input and an emitter grounded, and a second bipolar transistor having a base to which a first constant voltage is applied, a collector to which a first power supply voltage is applied, the first power supply voltage adapted to vary in accordance with an amplitude of the first radio frequency signal, and an emitter connected to a collector of the first bipolar transistor. The second bipolar transistor is configured to output a first amplified signal, obtained by amplifying the first radio frequency signal, from the collector of the second bipolar transistor.
Abstract translation: 提高了采用包络跟踪方案的功率放大模块的线性度。 功率放大模块包括第一双极晶体管，其具有输入第一射频信号的基极和发射极接地的第一双极晶体管，以及具有施加第一恒定电压的基极的第二双极晶体管， 施加电源电压，第一电源电压适合于根据第一射频信号的幅度而变化，以及连接到第一双极晶体管的集电极的发射极。 第二双极晶体管被配置为从第二双极晶体管的集电极输出通过放大第一射频信号而获得的第一放大信号。
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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：US12206439B2
公开(公告)日：2025-01-21
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：US11996869B2
公开(公告)日：2024-05-28
申请号：US18304418
申请日：2023-04-21
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji Tahara , Toshiki Matsui
CPC classification number: H04B1/006 , H03H7/46 , H04B1/0057 , H04B1/04 , H04B1/401 , H04B2001/0408
Abstract: A radio frequency module includes a transmit filter of Band A and Band B, a transmit amplifier, and a switch circuit and can perform CA using a transmit signal of Band A and a receive signal of Band B, a transmit band of Band B including a receive band of Band C. The switch circuit includes a switch switching connection between a common terminal and a first selection terminal, a switch switching connection between the common terminal and a second selection terminal, and a switch switching connection between the second selection terminal and a third selection terminal. The common terminal is connected to the transmit amplifier. The first selection terminal is connected to the transmit filter of Band A. The second selection terminal is connected to the transmit filter of Band B. The third selection terminal is connected to a receive path of Band C.
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