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公开(公告)号：US20200252092A1
公开(公告)日：2020-08-06
申请号：US16855401
申请日：2020-04-22
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Taizo HISANO , Hideki TSUKAMOTO , Hirotsugu MORI
Abstract: A multiplexer capable of concurrently sending a radio-frequency signal in one of Band A and Band B belong to a low band group and a radio-frequency signal in a Band C belongs to a high band group that includes: a common terminal and input/output terminals; a low-pass filter arranged between the common terminal and the input/output terminal and whose pass band is frequencies in the low band group and whose attenuation band is frequencies in the high band group; and a high-pass filter arranged between the common terminal and the input/output terminal and whose pass band is the frequencies in the high band group and whose attenuation band is the frequencies in the low band group. The low-pass filter includes a first frequency-variable circuit including a switch, and at least one of the pass band and the attenuation band of the low-pass filter is changeable.
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2.发明申请公开(公告)号：US20190036508A1
公开(公告)日：2019-01-31
申请号：US16145438
申请日：2018-09-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hideki TSUKAMOTO , Masakazu TANI , Kei MATSUTANI
CPC classification number: H03H7/465 , H03F3/19 , H03F3/195 , H03F2200/451 , H03H7/075 , H03H7/24 , H03H7/38 , H03H7/461 , H03H9/54 , H03H9/542 , H03H9/568 , H03H9/605 , H03H9/6436 , H03H9/6483 , H03H2210/012 , H03H2210/036 , H04B1/0475 , H04B1/1018
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：US20230216227A1
公开(公告)日：2023-07-06
申请号：US18065553
申请日：2022-12-13
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hideki TSUKAMOTO
IPC: H01R13/05 , H01R12/71 , H01R13/03 , H01R13/115
CPC classification number: H01R13/05 , H01R12/716 , H01R13/03 , H01R13/115
Abstract: An electrical connector includes a holding member that is electrically insulating, and a signal terminal and a male ground terminal held by the holding member. The male ground terminal is disposed next to the signal terminal. The male ground terminal includes a first lengthwise extending part, a second lengthwise extending part opposed to the first lengthwise extending part, and a laterally connecting part connecting an end portion of the first lengthwise extending part and an end portion of the second lengthwise extending part. The male ground terminal projects in side view. The male ground terminal includes a connection path configured to electrically connect the first lengthwise extending part and the second lengthwise extending part.
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公开(公告)号：US20200382152A1
公开(公告)日：2020-12-03
申请号：US16996278
申请日：2020-08-18
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hideki TSUKAMOTO
Abstract: A multilayer substrate includes a pair of first capacitor electrodes, a pair of second capacitor electrodes, and a dielectric substrate. Electrodes of the pair of first capacitor electrodes are disposed in dielectric substrate so as to face each other in a thickness direction of the dielectric substrate. Electrodes of the pair of second capacitor electrodes are disposed in the dielectric substrate so as to face each other in the thickness direction. A first element and a second element that are disposed in or on the dielectric substrate, and the pair of second capacitor electrodes, the pair of first capacitor electrodes, and a ground electrode that are disposed in the dielectric substrate are arranged in the stated order in the thickness direction. The pair of second capacitor electrodes at least partially overlaps the pair of first capacitor electrodes when viewed in plan in the thickness direction.
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公开(公告)号：US20230370105A1
公开(公告)日：2023-11-16
申请号：US18358170
申请日：2023-07-25
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiroyuki NAGAMORI , Akio KANEDA , Hiroshi MURANAKA , Hideki TSUKAMOTO , Daisuke ITO , Kiwamu SAKANO , Daisuke MIYAZAKI
CPC classification number: H04B1/18 , H03F3/193 , H03F3/245 , H04B1/52 , H04B7/04 , H03F2200/165 , H03F2200/294
Abstract: A frontend circuit includes a wide-band filter, a transmit filter, and switches. The wide-band filter passes both the receive frequency band of a first communication frequency band and that of a second communication frequency band which is close to or overlaps that of the first communication frequency band. The transmit filter passes the transmit frequency band of the first or second communication frequency band. The switches are capable of simultaneously bringing, into conduction, at least two of multiple filters including the wide-band filter and the transmit filter. In carrier aggregation using the receive frequency bands of the first and second communication frequency bands, the switches simultaneously bring the wide-band filter and the transmit filter into conduction. Thus, in carrier aggregation using signals of multiple communication frequencies simultaneously in communication, attenuation of signals due to signal leakage in two receive frequency bands, which are close to each other, is suppressed.
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Patent Agency Ranking
公开(公告)号：US20220140534A1
公开(公告)日：2022-05-05
申请号：US17648391
申请日：2022-01-19
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiroyuki HOSHIBA , Minoru MAMURO , Hideki TSUKAMOTO , Yuma AMEMORI
IPC: H01R13/6461 , H01R12/71 , H01R13/22 , H01R13/20
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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7.发明申请公开(公告)号：US20210194452A1
公开(公告)日：2021-06-24
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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8.发明申请公开(公告)号：US20190267969A1
公开(公告)日：2019-08-29
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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9.发明申请公开(公告)号：US20190222198A1
公开(公告)日：2019-07-18
申请号：US16365839
申请日：2019-03-27
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hideki TSUKAMOTO , Koji NOSAKA
CPC classification number: H03H9/64 , H03H9/02007 , H03H9/171 , H03H9/205 , H03H9/542 , H03H9/72 , H04B1/00 , H04B1/403 , H04B1/525
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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10.发明公开公开(公告)号：US20230327352A1
公开(公告)日：2023-10-12
申请号：US18333398
申请日：2023-06-12
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hideki TSUKAMOTO , Yuma AMEMORI , Yuuto MORITA , Hiroyuki HOSHIBA
CPC classification number: H01R12/716 , H01R13/05 , H01R13/50 , H01R12/57
Abstract: An electrical connector which suppresses radiation noise at a high frequency from an inner terminal, and an electrical connector set provided with the electrical connector. An electrical connector includes an inner terminal; an outer terminal surrounding the inner terminal; and a holding member that has electrically insulating properties, extends in the long-side direction and the short-side direction, and is configured to hold the inner terminal and the outer terminal. The holding member has a first surface located on the first side that is the side facing a mounting circuit board, a second surface located on the second side opposite from the first side, and an inner side surface and an outer side surface connecting the first surface to the second surface. The outer terminal includes a first part extending along the first surface, and an inner part connected to the first part and extending along the inner side surface.
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