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公开(公告)号：US12051843B2
公开(公告)日：2024-07-30
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
CPC classification number: 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.
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公开(公告)号：US11043978B2
公开(公告)日：2021-06-22
申请号：US15688980
申请日：2017-08-29
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Ryangsu Kim
Abstract: A bidirectional coupler includes the following elements. A main line and a sub-line are electromagnetically coupled. First and second resistors are each grounded at one end. First and second switches connect the sub-line to the first and second resistors or a third port. A third resistor is disposed between one end of the sub-line and the first switch or between the other end of the sub-line and the second switch. When detecting an input signal, the first switch electrically connects one end of the sub-line to the other end of the first resistor and the second switch electrically connects the other end of the sub-line to the third port. When detecting a reflected signal, the first switch electrically connects one end of the sub-line to the third port and the second switch electrically connects the other end of the sub-line to the other end of the second resistor.
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公开(公告)号：US11984638B2
公开(公告)日：2024-05-14
申请号：US17461099
申请日：2021-08-30
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenta Seki , Ryangsu Kim , Kazuhito Osawa
CPC classification number: H01P5/187 , H01P5/188 , H03H2001/0085
Abstract: A directional coupler includes a multilayer body, a conductor (31), and a conductor (32). The conductor (31) is a conductor that is arranged in an insulating layer (21) of the multilayer body and that extends in a certain shape. The conductor (32) is arranged on a side of an insulating layer (22) of the multilayer body opposite the insulating layer (21). The conductor (32) runs parallel to the conductor (31) and is electromagnetically coupled to the conductor (31). The conductor (32) has a winding shape with one or more rounds, and has a conductor portion (321) and a conductor portion (325) that are arranged adjacent to each other with a spacing in a direction orthogonal to a running parallel direction. In plan view of the multilayer body, the conductor (31) is arranged between the conductor portion (321) and the conductor portion (325).
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公开(公告)号：US11362634B2
公开(公告)日：2022-06-14
申请号：US16944777
申请日：2020-07-31
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hisanori Murase , Naru Morito , Hiromichi Kitajima , Ryangsu Kim , Yasushi Shigeno , Kenta Seki
Abstract: A filter module includes a first ground terminal, a second ground terminal, a low pass filter, and a second inductor. The low pass filter includes a first inductor provided in an input/output path of signal, a first capacitor provided in a first path connecting a first node and the first ground terminal, and a second capacitor provided in a second path connecting a second node and the second ground terminal. The second inductor is connected in series to the second capacitor in a path connecting the second capacitor and the second ground terminal. The first path and the second path are not connected to each other by any path except the one between the first node and the second node.
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公开(公告)号：US20150200653A1
公开(公告)日：2015-07-16
申请号：US14569897
申请日：2014-12-15
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Ryangsu Kim
CPC classification number: H03K17/223 , G06F1/24 , H03K3/012 , H03K3/0375 , H03K17/22
Abstract: A power-on reset circuit includes a first resistor having one end connected to a power source node; a first capacitor connected to another end of the first resistor; a second resistor having one end connected to the power source node; a second capacitor connected to another end of the second resistor; a first inverter having a power source terminal connected to the other end of the first resistor and an input terminal connected to the other end of the second resistor; and a second inverter having a power source terminal connected to the other end of the first resistor, an input terminal connected to an output terminal of the first inverter, and an output terminal electrically connected to a reset signal output terminal.
Abstract translation: 上电复位电路包括：一端连接到电源节点的第一电阻; 连接到所述第一电阻器的另一端的第一电容器; 一个第二电阻器，其一端连接到电源节点; 连接到所述第二电阻器的另一端的第二电容器; 第一反相器，其具有连接到第一电阻器的另一端的电源端子和连接到第二电阻器的另一端的输入端子; 以及第二反相器，其具有连接到第一电阻器的另一端的电源端子，连接到第一反相器的输出端子的输入端子和电连接到复位信号输出端子的输出端子。
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Patent Agency Ranking
公开(公告)号：US11837770B2
公开(公告)日：2023-12-05
申请号：US17186171
申请日：2021-02-26
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenta Seki , Ryangsu Kim , Katsuya Shimizu
Abstract: A directional coupler includes a main line and a sub-line electromagnetically coupled to each other, a variable termination circuit that is connected to one end of the sub-line and that has a variable impedance, a variable matching circuit that is connected to the other end of the sub-line and that has a variable impedance or a variable attenuator that has a variable attenuation, and a control circuit that controls the impedance of the variable termination circuit and that controls the impedance of the variable matching circuit or the attenuation of the variable attenuator. The control circuit includes a non-volatile memory and controls the impedance of the variable termination circuit in accordance with data stored in the memory.
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公开(公告)号：US11509034B2
公开(公告)日：2022-11-22
申请号：US16941577
申请日：2020-07-29
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenta Seki , Yasushi Shigeno , Daisuke Tokuda , Ryangsu Kim , Katsuya Shimizu , Kazuhito Osawa
Abstract: A directional coupler includes a main line through which a signal is transmitted, first and second sub-lines that are selectively coupled to the main line, and a common output port that outputs a detection signal generated by the signal transmitted through the main line, wherein a first degree of coupling between the main line and the first sub-line is different than a second degree of coupling between the main line and the second sub-line.
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公开(公告)号：US11121444B2
公开(公告)日：2021-09-14
申请号：US16552360
申请日：2019-08-27
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenta Seki , Ryangsu Kim , Katsuya Shimizu
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.
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公开(公告)号：US09337777B2
公开(公告)日：2016-05-10
申请号：US14569928
申请日：2014-12-15
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Ryangsu Kim
CPC classification number: H03F1/0211 , H03F1/0261 , H03F1/223 , H03F1/3205 , H03F3/193 , H03F3/211 , H03F2200/516 , H03F2201/3215
Abstract: An amplifier includes a first FET having a first back-gate end, a second FET having a second back-gate end, a third FET having a third back-gate end, a first power supply terminal configured to apply a voltage to the first back-gate end, a second power supply terminal configured to apply a voltage to the second back-gate end, and a third power supply terminal configured to apply a voltage to the third back-gate end. In the stated amplifier, the first through third power supply terminals are configured such that different voltages can be set to the first through third power supply terminals.
Abstract translation: 放大器包括具有第一后栅极端的第一FET，具有第二后栅极端的第二FET，具有第三后栅极端的第三FET，被配置为向第一背面施加电压的第一电源端 门端，被配置为向第二后栅极端施加电压的第二电源端子和被配置为向第三后栅极端施加电压的第三电源端子。 在所述放大器中，第一至第三电源端子被配置为使得可以将第一至第三电源端子设定不同的电压。
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公开(公告)号：US11699983B2
公开(公告)日：2023-07-11
申请号：US17032281
申请日：2020-09-25
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Daisuke Tokuda , Ryangsu Kim , Yasushi Shigeno , Katsuya Shimizu
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.
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