公开(公告)号：US20240072407A1

公开(公告)日：2024-02-29

申请号：US18449909

申请日：2023-08-15

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Daisuke TOKUDA ,  Ryangsu KIM ,  Yuuta MIYAZAKI ,  Naoya AKASHI

IPC: H01P5/18

CPC classification number: H01P5/188

Abstract: A directional coupler includes a first main line, a second main line, first sub-lines, second sub-lines, a first output terminal, a second output terminal, a first inductor, and a second inductor. The first output terminal is configured to be coupled to the first sub-lines. The first output terminal is configured to output a first detection signal corresponding to a first radio-frequency signal transferred through the first main line. The second output terminal is configured to be coupled to the second sub-lines. The second output terminal is configured to output a second detection signal corresponding to a second radio-frequency signal transferred through the second main line. The first inductor is provided in a first signal path including the first output terminal. The second inductor is provided in a second signal path including the second output terminal.

公开(公告)号：US20220407211A1

公开(公告)日：2022-12-22

申请号：US17821492

申请日：2022-08-23

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kenta SEKI ,  Yasushi SHIGENO ,  Daisuke TOKUDA ,  Ryangsu KIM ,  Katsuya SHIMIZU ,  Kazuhito OSAWA

IPC: H01P5/18

Abstract: A directional coupler includes a main line, a first sub-line to be electromagnetically coupled to the main line, a second sub-line to be electromagnetically coupled to the main line, and a coupling terminal configured to output a detection signal corresponding to a radio frequency signal that is transmitted through the main line, the first sub-line and the second sub-line are different in length from each other, and connection between the first sub-line and the coupling terminal and connection between the second sub-line and the coupling terminal are switched.

公开(公告)号：US20210376441A1

公开(公告)日：2021-12-02

申请号：US17331080

申请日：2021-05-26

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Daisuke TOKUDA ,  Katsuya SHIMIZU ,  Kenta SEKI ,  Ryangsu KIM

IPC: H01P5/18

Abstract: A directional coupler includes a main line, a sub-line electromagnetically coupled with the main line, a coupled output terminal, plural filters, filter switching circuits, and plural filter protecting switches. Each of the filter switching circuits is able to connect a corresponding one of the plural filters to one end of the sub-line and to the coupled output terminal. Each of the filter protecting switches is directly connected to a corresponding end of a corresponding one of the plural filters and is able to switch between a connection state and a disconnection state. The connection state is a state in which the corresponding end of the corresponding one of the plural filters is connected to a reference potential. The disconnection state is a state in which the corresponding end of the corresponding one of the plural filters is disconnected from the reference potential.

公开(公告)号：US20210344096A1

公开(公告)日：2021-11-04

申请号：US17244124

申请日：2021-04-29

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kenta SEKI ,  Ryangsu KIM ,  Kazuhito OSAWA ,  Katsuya SHIMIZU

IPC: H01P5/18 ,  H01P1/10

Abstract: A directional coupler includes a main line, a sub-line, a coupling terminal, a terminal circuit, a first switching circuit, and a second switching circuit. The first switching circuit and the second switching circuit respectively connects the first end and the second end of the sub-line alternately to the coupling terminal and to the terminal circuit. The first switching circuit connects the first end to the coupling terminal at a time that differs from a time at which the first switching circuit disconnects the first end from the terminal circuit. The first switching circuit disconnects the first end from the coupling terminal at a time that differs from a time at which the first switching circuit connects the first end to the terminal circuit.

公开(公告)号：US20210013858A1

公开(公告)日：2021-01-14

申请号：US17032281

申请日：2020-09-25

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Daisuke TOKUDA ,  Ryangsu KIM ,  Yasushi SHIGENO ,  Katsuya SHIMIZU

IPC: H03H7/40 ,  H01P5/18

Abstract: A directional coupler (2) includes a main line (11), a sub-line (12), a variable terminator (13), and a variable filter circuit (15). The variable terminator (13) is a variable impedance circuit that terminates one end portion of the sub-line (12). The variable filter circuit (15) is connected to the other end portion of the sub-line (12). The variable filter circuit (15) may include a filter, a bypass path, and a switch which is connected to at least one of the filter and the bypass path.

公开(公告)号：US20180351229A1

公开(公告)日：2018-12-06

申请号：US15989740

申请日：2018-05-25

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Ryangsu KIM ,  Yasushi SHIGENO

IPC: H01P5/18 ,  H03H1/00 ,  H04B17/10

CPC classification number: H01P5/184 ,  H01P5/185 ,  H03H1/00 ,  H03H2001/005 ,  H04B17/101 ,  H04B17/102 ,  H04B17/103 ,  H04W52/247

Abstract: A bidirectional coupler includes: a multilayer substrate; and a first main line, a second main line, and a sub line which are provided in or on the multilayer substrate. The sub line includes a first line portion being a portion electromagnetically coupled with the first main line and an even number of second line portions being portions electromagnetically coupled with the second main line. One half of the second line portions is provided between the first line portion and one end portion of the sub line, and the other half of the second line portions is provided between the first line portion and the other end portion of the sub line.

公开(公告)号：US20240332778A1

公开(公告)日：2024-10-03

申请号：US18742270

申请日：2024-06-13

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kazuhito OSAWA ,  Ryangsu KIM ,  Kenta SEKI

IPC: H01P5/18 ,  H03H7/18 ,  H04B1/44

CPC classification number: H01P5/18 ,  H03H7/18 ,  H04B1/44

Abstract: A directional coupler includes a main line, a first sub line, a second sub line, a termination circuit, a first phase shifter circuit, a first selector switch, and a second selector switch. The termination circuit terminates one of the first sub line and the second sub line. The first phase shifter circuit is disposed on a first signal path between the first sub line and the second sub line. The first selector switch performs switching between connection and non-connection between the first sub line and the first phase shifter circuit. The second selector switch performs switching between connection and non-connection between the first phase shifter circuit and the second sub line.

公开(公告)号：US20230208004A1

公开(公告)日：2023-06-29

申请号：US18168644

申请日：2023-02-14

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Daisuke TOKUDA ,  Ryangsu KIM

IPC: H01P5/18 ,  H01P1/10 ,  H03H7/38

CPC classification number: H01P5/18 ,  H01P1/10 ,  H03H7/38

Abstract: A directional coupler includes a main line, sub-lines, and a switch. The sub-lines are located at positions that enable the sub-lines to be electromagnetically coupled to the main line. The switch is coupled between an end portion sand an end portion of the sub-line. The switch is configured to switch connection of the end portion and the end portion between a shorted state and an open state.

公开(公告)号：US20220077559A1

公开(公告)日：2022-03-10

申请号：US17455250

申请日：2021-11-17

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kenta SEKI ,  Ryangsu KIM ,  Katsuya SHIMIZU

IPC: H01P5/18

Abstract: A directional coupler includes a main line, a secondary line, and a variable terminator. The variable terminator includes a variable inductor. The variable inductor includes a plurality of inductors coupled in series with each other between an end portion of the secondary line and the ground and switches configured to bypass at least one inductor of the plurality of inductors.

公开(公告)号：US20200076045A1

公开(公告)日：2020-03-05

申请号：US16552360

申请日：2019-08-27

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kenta SEKI ,  Ryangsu KIM ,  Katsuya SHIMIZU

IPC: H01P5/18 ,  H03F3/189 ,  H03H7/38 ,  H03H7/01 ,  H04B1/00 ,  H01P1/201

Abstract: A directional coupler includes a main line for transmitting a high frequency signal, a sub line electromagnetically coupled to the main line, a termination circuit for terminating one end portion of the sub line, and a variable filter that has an input terminal and an output terminal and the input terminal is connected to another end portion of the sub line. The variable filter is a filter unit circuit having one frequency band as a pass band or a stop band, and in the filter unit circuit, a variable passive element for shifting a frequency in the pass band or the stop band is disposed.