公开(公告)号：US20240347890A1

公开(公告)日：2024-10-17

申请号：US18754898

申请日：2024-06-26

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kenta SEKI ,  Ryangsu KIM ,  Kazuhito OSAWA

IPC: H01P5/18 ,  H01Q5/50

CPC classification number: H01P5/188 ,  H01Q5/50

Abstract: Degrees of a change in an insertion loss of a main line and a change in a phase of a signal are small regardless of whether or not detection is performed by using a sub-line. A directional coupler includes a main line, a sub-line, a first termination circuit, a second termination circuit, and a switch. The sub-line has a first end and a second end. The first termination circuit terminates the first end and the second end of the sub-line. The switch switches connection and disconnection between the sub-line and the first termination circuit.

公开(公告)号：US20200169256A1

公开(公告)日：2020-05-28

申请号：US16777123

申请日：2020-01-30

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kenta SEKI

IPC: H03K17/693

Abstract: A length of a zone in which a power propagation direction from an input/output terminal (P251) toward a common terminal (P20) and a power propagation direction from the common terminal (P20) toward an external connection terminal (P10) are opposite to each other is longer than a length of a zone in which a power propagation direction from an input/output terminal (P211) toward the common terminal (P20) and a power propagation direction from the common terminal (P20) toward the external connection terminal (P10) are opposite to each other. A FET (251) and a FET (211) have structures that power transferred between a drain and a source of the FET (251) in accordance with predetermined input power is greater than power transferred between a drain and a source of the FET (211).

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：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.

公开(公告)号：US20230178870A1

公开(公告)日：2023-06-08

申请号：US18153407

申请日：2023-01-12

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kenta SEKI

IPC: H01P5/18 ,  H01P1/213

CPC classification number: H01P5/18 ,  H01P1/213 ,  H03H7/0161

Abstract: A directional coupler includes a main line, a sub line electromagnetically coupled to the main line, a coupling output terminal connected to one end of the sub line, a filter connected between the one end of the sub line and the coupling output terminal, and a filter with a pass band higher than a pass band of the filter. One end of the filter is connected to the coupling output terminal. Another end of the filter is terminated.

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：US20200343214A1

公开(公告)日：2020-10-29

申请号：US16923516

申请日：2020-07-08

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kenta SEKI

IPC: H01L23/00 ,  H03K17/693

Abstract: A switch module (1) includes RF input/output wires (51a, 51c) connecting RF input/output pad electrodes (11a, 11c) and RF input/output lead electrodes (31a, 31c), control signal wires (52a, 52b) connecting control-signal pad electrodes (12a, 12b) and control-signal lead electrodes (32a, 32b), and a ground wire (53a) connected to a ground pad electrode (13a). The control-signal pad electrodes (12a, 12b), the control-signal lead electrodes (32a, 32b), and the control signal wires (52a, 52b) are disposed in a region (a2) on the opposite side, with respect to a boundary defined by a linear line (L1) along an extension direction of the ground wire (53a), to a region (a1) in which the RF input/output wire (51a), the RF input/output pad electrode (11a), and the RF input/output lead electrode (31a) are disposed.

公开(公告)号：US20180358964A1

公开(公告)日：2018-12-13

申请号：US16001020

申请日：2018-06-06

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kenta SEKI

IPC: H03K17/693 ,  H03K17/687 ,  H03K17/06 ,  H03H11/28 ,  H01L23/522 ,  H01L27/06 ,  H04B1/52

CPC classification number: H03K17/693 ,  H01L23/5223 ,  H01L27/0629 ,  H03H11/28 ,  H03K17/063 ,  H03K17/102 ,  H03K17/6871 ,  H03K2217/0054 ,  H04B1/52

Abstract: A bidirectional switch circuit is constituted of an FET group encompassing FETs of L stages (L≥3) connected in series to each other and includes an FET group configured to control electric conduction for a signal in both directions between one end and the other end of the above-mentioned FET group and a plurality of capacitance elements. The FET group includes a first FET closest to the one end and a second FET closest to the other end. The plurality of capacitance elements encompass a first capacitance element group including capacitance elements of M stages (1≤M

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.