公开(公告)号：US10804955B2

公开(公告)日：2020-10-13

申请号：US16788625

申请日：2020-02-12

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Satoshi Sakurai ,  Satoshi Arayashiki ,  Satoshi Tanaka ,  Kyoichi Hirayama ,  Tomohito Ito ,  Kenta Kurahashi

IPC: H04B1/48 ,  H04B1/00

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.

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

IPC: H04B1/48 ,  H04B1/00

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.

公开(公告)号：US11050455B2

公开(公告)日：2021-06-29

申请号：US16853817

申请日：2020-04-21

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hitoshi Akamine ,  Satoshi Sakurai

IPC: H04B1/44

Abstract: A radio-frequency signal sending/receiving circuit includes a low-noise amplifier electrically connected to a first terminal, a first switch electrically connected to the input terminal of the low-noise amplifier, a band pass filter electrically connected at one end to the other end of the first switch and at the other end to a first antenna via a fourth terminal, a power amplifier electrically connected to a second terminal, a second switch electrically connected at one end to the output terminal of the power amplifier and at the other end to the band pass filter, a third switch electrically connected at one end to the output terminal of the power amplifier and at the other end to a fifth terminal, and a fourth switch electrically connected at one end to a third terminal and at the other end to the fifth terminal.

公开(公告)号：US20200036342A1

公开(公告)日：2020-01-30

申请号：US16589848

申请日：2019-10-01

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Mizuho Ishikawa ,  Satoshi Sakurai

IPC: H03F1/02 ,  H03F3/72 ,  H03F3/68 ,  H04B1/00 ,  H03F3/195 ,  H03F3/21 ,  H03F3/213 ,  H03F3/60 ,  H04B1/401 ,  H03F3/24

Abstract: A power amplification module includes first and second amplifiers for first and second communication modes, a bypass line that bypasses the first or second amplifier, an input switch circuit that supplies a radio frequency signal to the first or second amplifier in accordance with a communication mode when a desired output level is equal to or greater than a reference level, and that supplies a radio frequency signal to the bypass line when the desired output level is less than the reference level, and an output switch circuit that outputs a first amplified signal from the first amplifier or a second amplified signal from the second amplifier in accordance with the communication mode when the desired output level is equal to or greater than the reference level, and that outputs a radio frequency signal output from the bypass line when the desired output level is less than the reference level.