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1.发明授权公开(公告)号：US11411545B2
公开(公告)日：2022-08-09
申请号：US17197261
申请日：2021-03-10
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hideki Tsukamoto , Hirotsugu Mori
Abstract: A multiplexer (100) includes a first filter (FLT1) that passes a signal in a first frequency band, a second filter (FLT2) that passes a signal in a second frequency band lower than the first frequency band, and a third filter (FLT3) that passes a signal in a third frequency band. The third frequency band is a frequency band higher than the first frequency band, or a frequency band lower than the second frequency band. The first filter includes a first inductor (L11) that forms a first attenuation pole on a low-frequency side of the first frequency band. The second filter includes a second inductor (L23) that forms a second attenuation pole on a high-frequency side of the second frequency band. At least a portion of a component constituting the third filter is disposed between the first inductor and the second inductor.
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2.发明申请公开(公告)号：US20200373949A1
公开(公告)日：2020-11-26
申请号：US16989203
申请日：2020-08-10
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Taizo HISANO , Hideki Tsukamoto
Abstract: A multilayer substrate includes a dielectric substrate, a pair of capacitor electrodes, and an input/output electrode that is an electrode for input, an electrode for output, or an electrode for input and output. The dielectric substrate has a first main surface and a second main surface that are opposite to each other in a thickness direction of the dielectric substrate. The pair of capacitor electrodes is disposed in the dielectric substrate. Electrodes of the pair of capacitor electrodes face each other in the thickness direction. The input/output electrode is disposed on the second main surface of the dielectric substrate. A capacitor that includes the pair of capacitor electrodes and a portion being part of the dielectric substrate and located between the electrodes of the pair of capacitor electrodes at least partially overlaps the input/output electrode electrically connected to the capacitor.
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公开(公告)号：US10200012B2
公开(公告)日：2019-02-05
申请号：US15718330
申请日：2017-09-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hideki Tsukamoto , Masakazu Tani
Abstract: A high-frequency filter (10) includes resonators (21, 31, and 32), an inductor (41), and a switch (51). The resonator (21) is connected between a first input/output terminal (P1) and a second input/output terminal (P2). One end of the inductor (41) is connected between the resonator (21) and the first input/output terminal (P1). One end of the resonator (31) is connected to the other end of the inductor (41). The switch (51) selects either a connection portion that connects the inductor (41) and the resonator (31) or the resonator (32) and connects either the connection portion or the resonator (32), which has been selected, to a terminal of the resonator (21) on the side of the second input/output terminal (P2). The switching between the connection modes of the switch (51) changes the circuit configuration of the high-frequency filter (10).
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公开(公告)号：US11075658B2
公开(公告)日：2021-07-27
申请号：US16989203
申请日：2020-08-10
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Taizo Hisano , Hideki Tsukamoto
Abstract: A multilayer substrate includes a dielectric substrate, a pair of capacitor electrodes, and an input/output electrode that is an electrode for input, an electrode for output, or an electrode for input and output. The dielectric substrate has a first main surface and a second main surface that are opposite to each other in a thickness direction of the dielectric substrate. The pair of capacitor electrodes is disposed in the dielectric substrate. Electrodes of the pair of capacitor electrodes face each other in the thickness direction. The input/output electrode is disposed on the second main surface of the dielectric substrate. A capacitor that includes the pair of capacitor electrodes and a portion being part of the dielectric substrate and located between the electrodes of the pair of capacitor electrodes at least partially overlaps the input/output electrode electrically connected to the capacitor.
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公开(公告)号：US10958242B2
公开(公告)日：2021-03-23
申请号：US16365839
申请日：2019-03-27
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hideki Tsukamoto , Koji Nosaka
IPC: H03H9/54 , H03H9/64 , H03H9/72 , H04B1/525 , H03H9/205 , H03H9/17 , H03H9/60 , H04B1/403 , H03H9/70 , H03H9/56 , H04B1/00 , H03H9/02
Abstract: A filter includes a series arm resonator, a first parallel arm resonance circuit, and a second parallel arm resonance circuit. The first parallel arm resonance circuit includes: a first parallel arm resonator connected to a first node; a first capacitor and a first switch connected together in parallel and connected in series with the first parallel arm resonator; and a first inductor provided on a path connecting the node and ground to each other via the first switch. The second parallel arm resonance circuit includes: a second parallel arm resonator connected to a second node; a second capacitor and a second switch connected together in parallel and connected in series with the second parallel arm resonator; and a second inductor provided on a path connecting the second node and ground to each other via the second switch. The first and second inductor have different inductance values.
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Patent Agency Ranking
公开(公告)号：US10944381B2
公开(公告)日：2021-03-09
申请号：US16353088
申请日：2019-03-14
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hideki Tsukamoto , Koji Nosaka
Abstract: A filter includes a series arm resonator, a first parallel arm resonance circuit and a second parallel arm resonance circuit. The each of the first parallel arm resonance circuit and the second parallel arm resonance circuit includes: a parallel arm resonator that is connected to a node; a pair of elements consisting of a capacitor and a switch, which are connected in parallel with each other, that is connected in series with the parallel arm resonator; and an inductor that is provided on a path that connects the node and ground to each other via the switch. The inductance value of the inductor of the first parallel arm resonance circuit and the inductance value of the inductor of the second parallel arm resonance circuit are substantially equal to each other.
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公开(公告)号：US10382006B2
公开(公告)日：2019-08-13
申请号：US16145438
申请日：2018-09-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hideki Tsukamoto , Masakazu Tani , Kei Matsutani
IPC: H04B1/38 , H03H7/46 , H03H7/075 , H03F3/19 , H03H7/24 , H03H7/38 , H03H9/54 , H04B1/04 , H04B1/10 , H03H9/56 , H03H9/60 , H03H9/64
Abstract: A first attenuation circuit is connected between a node and ground, and the node is located between a ladder resonance circuit and a transmitter-side terminal. A second attenuation circuit is connected between a first parallel arm resonator of the ladder resonance circuit and ground and is connected in series to the first parallel arm resonator. The first attenuation circuit includes a second parallel arm resonator and a first switch that switches between a first state in which the second parallel arm resonator is connected to the node and a second state in which the first switch is open. The second attenuation circuit includes a capacitor and a second switch that switches between a first state in which the capacitor is connected to the first parallel arm resonator and a second state in which the first parallel arm resonator is connected to ground.
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公开(公告)号：US10224899B2
公开(公告)日：2019-03-05
申请号：US15718354
申请日：2017-09-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hideki Tsukamoto
IPC: H03H9/50 , H01P1/20 , H03H7/075 , H03H9/64 , H04B1/52 , H04B1/00 , H03H7/01 , H03H9/70 , H03H9/72
Abstract: A high-frequency filter includes a variable frequency filter, a fixed frequency filter, and switches. The variable frequency filter varies a passband in association with frequencies used in multiple communication band. The fixed frequency filter fixes a passband in association with a frequency used in a specific communication band different from the multiple communication bands. The switches are used to switch connection configuration to the variable frequency filter or the fixed frequency filter.
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公开(公告)号：US20180019731A1
公开(公告)日：2018-01-18
申请号：US15718330
申请日：2017-09-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hideki Tsukamoto , Masakazu Tani
CPC classification number: H03H9/542 , H03H9/0009 , H03H9/6406 , H03H9/6423 , H03H9/6483 , H03H9/706 , H03H9/725
Abstract: A high-frequency filter (10) includes resonators (21, 31, and 32), an inductor (41), and a switch (51). The resonator (21) is connected between a first input/output terminal (P1) and a second input/output terminal (P2). One end of the inductor (41) is connected between the resonator (21) and the first input/output terminal (P1). One end of the resonator (31) is connected to the other end of the inductor (41). The switch (51) selects either a connection portion that connects the inductor (41) and the resonator (31) or the resonator (32) and connects either the connection portion or the resonator (32), which has been selected, to a terminal of the resonator (21) on the side of the second input/output terminal (P2). The switching between the connection modes of the switch (51) changes the circuit configuration of the high-frequency filter (10).
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公开(公告)号：US12088045B2
公开(公告)日：2024-09-10
申请号：US17648391
申请日：2022-01-19
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiroyuki Hoshiba , Minoru Mamuro , Hideki Tsukamoto , Yuma Amemori
CPC classification number: H01R13/6461 , H01R12/716 , H01R13/20 , H01R13/22 , H01R12/57
Abstract: A first connector of a connector set includes first internal terminals, a first insulation member that fixes the first internal terminals, and first external terminals having a surrounding shape portion that surrounds the first internal terminals and the first insulation member. The second connector includes second internal terminals, a second insulation member that fixes the second internal terminals, and a second external terminal having a surrounding shape portion that surrounds the second internal terminals and the second insulation member. The first external terminals have cutout portions at a portion that is part of the surrounding shape portion of the first external terminal and faces a ground conductor formed at a mounting position of the second connector of the second circuit substrate.
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