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公开(公告)号：US20250105794A1
公开(公告)日：2025-03-27
申请号：US18894479
申请日：2024-09-24
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Jun ENOMOTO , Shohei IMAI , Hideyuki SATO
Abstract: A substrate and a chip device mounted on a main surface of the substrate are provided. The chip device is provided with a first differential amplifier including a first carrier amplifier and a second carrier amplifier, and a second differential amplifier including a first peak amplifier and a second peak amplifier. In the chip device, the first carrier amplifier and the second carrier amplifier are disposed side by side in a first direction, the first carrier amplifier and the first peak amplifier are disposed side by side in a second direction different from the first direction, the first peak amplifier and the second peak amplifier are disposed side by side in the first direction, and the second carrier amplifier and the second peak amplifier are disposed side by side in the second direction.
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公开(公告)号：US20240333225A1
公开(公告)日：2024-10-03
申请号：US18610639
申请日：2024-03-20
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shohei IMAI
CPC classification number: H03F1/0288 , H03F3/193 , H03F3/211 , H03F2200/451
Abstract: A Doherty amplifier circuit includes a carrier amplifier that amplifies a high frequency signal, a peak amplifier that amplifies the high frequency signal, and a control circuit that controls the peak amplifier based on a supply current of an amplifying transistor in the carrier amplifier.
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公开(公告)号：US20230216450A1
公开(公告)日：2023-07-06
申请号：US18182641
申请日：2023-03-13
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shohei IMAI
CPC classification number: H03F1/303 , H03F3/245 , H03F1/0288 , H03F2200/451
Abstract: A power amplification circuit including: a power splitter which splits an input signal into a first signal and a second signal; a first carrier amplifier which amplifies the first signal to output a first amplified signal; a first peak amplifier which amplifies the second signal when a power level of the second signal is larger than or equal to a predetermined power level to output a second amplified signal; and a combiner which combines the first amplified signal and the second amplified signal, in which the first carrier amplifier and the first peak amplifier are provided to a same semiconductor substrate.
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公开(公告)号：US20250105793A1
公开(公告)日：2025-03-27
申请号：US18829720
申请日：2024-09-10
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shohei IMAI
Abstract: A first bias circuit, a second bias circuit, a first differential amplifier, a second differential amplifier, and an inverting amplifier are included. The first bias circuit has: a first bias output terminal from which first bias current or a voltage is output to a carrier amplifier; and a first monitoring terminal from which a first monitoring signal is output. The second bias circuit has: a second bias output terminal from which second bias current or a voltage is output to a peaking amplifier; and a second monitoring terminal from which a second monitoring signal is output. The first differential amplifier outputs the first bias control signal. The second differential amplifier outputs an amplified signal. The inverting amplifier outputs the second bias control signal resulting from inverting amplification of the amplified signal.
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公开(公告)号：US20240333227A1
公开(公告)日：2024-10-03
申请号：US18619797
申请日：2024-03-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shohei IMAI
IPC: H03F1/02
CPC classification number: H03F1/0288 , H03F2200/451 , H03F2200/474
Abstract: A Doherty amplifier includes a carrier amplifier amplifying a radio frequency signal, a peak amplifier amplifying a radio frequency signal and including a driver stage peak amplifier and a power stage peak amplifier receiving an output of the driver stage peak amplifier, a drive level detection circuit detecting a drive level of the carrier amplifier, a control circuit outputting a signal to set a bias of the driver stage peak amplifier based on a drive level signal indicating the drive level detected by the drive level detection circuit, and a generation circuit generating a current or a voltage in accordance with an operating state of the driver stage peak amplifier. An operating state of the power stage peak amplifier is controlled based on the current or the voltage generated by the generation circuit in accordance with the operating state of the driver stage peak amplifier.
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Patent Agency Ranking
公开(公告)号：US20240429872A1
公开(公告)日：2024-12-26
申请号：US18825500
申请日：2024-09-05
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shohei IMAI
Abstract: An electronic circuit includes: a variable amplitude control circuit that controls an amplitude of a first radio-frequency signal being a single-ended signal in accordance with a control signal that continuously changes and that outputs a second radio-frequency signal being a single-ended signal; and a balun that converts the second radio-frequency signal into differential signals and outputs a pair of third radio-frequency signals.
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公开(公告)号：US20240348209A1
公开(公告)日：2024-10-17
申请号：US18627475
申请日：2024-04-05
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Tetsurou ASHIDA , Kouhei JITOUSHO , Tomoya ODA , Shohei IMAI
CPC classification number: H03F1/0288 , H03F3/245 , H03F2200/451
Abstract: A radio frequency module includes a carrier amplifier and a peak amplifier. A 90° hybrid circuit is connected to an input end of the carrier amplifier and an input end of the peak amplifier. A coupler is connected to an output end of the carrier amplifier and an output end of the peak amplifier. A control circuit varies a threshold value of a bias voltage of the peak amplifier based on a radio frequency signal input to the 90° hybrid circuit or the carrier amplifier, and a signal indicating a drive level of the carrier amplifier. The carrier amplifier and the peak amplifier are included in an integrated circuit, the control circuit is included in another integrated circuit, and the other integrated circuit is disposed adjacent to the integrated circuit on a carrier amplifier side out of the carrier amplifier and the peak amplifier.
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公开(公告)号：US20240235490A1
公开(公告)日：2024-07-11
申请号：US18405258
申请日：2024-01-05
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shohei IMAI
CPC classification number: H03F1/0288 , H03F1/565 , H03F3/245 , H03F3/602 , H03F2200/451
Abstract: A divider circuit divides an input signal into first, second, third, and fourth input signals. A first carrier amplifier amplifies the first input signal and outputs a first output signal. A first peak amplifier amplifies the second input signal and outputs a second output signal. A first converter inputs the first and second output signals. A second carrier amplifier amplifies the third input signal and outputs a third output signal, the first and second carrier amplifiers forming a differential pair. A second peak amplifier amplifies the fourth input signal and outputs a fourth output signal, the first and second peak amplifiers forming a differential pair. A second converter inputs the third output signal and is electrically connected to the first converter. A combiner is electrically connected to an output terminal or a ground and to the first and second converters.
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公开(公告)号：US20240204730A1
公开(公告)日：2024-06-20
申请号：US18544917
申请日：2023-12-19
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Jun ENOMOTO , Shohei IMAI
CPC classification number: H03F1/0288 , H03F1/56 , H03F3/245 , H03F3/602 , H03F2200/198 , H03F2200/204 , H03F2200/423 , H03F2200/451
Abstract: A power amplifier includes a first amplifier configured to amplify a first high-frequency signal, a second amplifier configured to amplify a second high-frequency signal delayed with respect to the first high-frequency signal by at least 90 degrees, a hybrid coupler including a first transmission line and a second transmission line, a first power-supply circuit for the first amplifier, a second power-supply circuit for the second amplifier, and an output matching network. The hybrid coupler is connected to an output end of the first amplifier at a first end of the first transmission line. The first transmission line is connected to the first power-supply circuit and the output matching network at a second end. The second transmission line is connected to an output end of the second amplifier at a first end. The second transmission line is connected to the second power-supply circuit at a second end.
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公开(公告)号：US20230261622A1
公开(公告)日：2023-08-17
申请号：US18307089
申请日：2023-04-26
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shohei IMAI , Satoshi TANAKA
CPC classification number: H03F3/245 , H03F1/56 , H03F2200/09
Abstract: A power amplifier circuit includes: a power splitter; a first amplifier; a second amplifier; a first balun that splits a first amplified signal into a third amplified signal and a fourth amplified signal having a different phase from the third amplified signal; a third amplifier and a fourth amplifier that respectively amplify the third amplified signal and the fourth amplified signal; a second balun that splits a second amplified signal into a fifth amplified signal and a sixth amplified signal having a different phase from the fifth amplified signal; a fifth amplifier that amplifies the fifth amplified signal if a power level of the fifth amplified signal is equal to or higher than a predetermined power level; and a sixth amplifier that amplifies the sixth amplified signal if a power level of the sixth amplified signal is equal to or higher than a predetermined power level.
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