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公开(公告)号：US20240014804A1
公开(公告)日：2024-01-11
申请号：US18472237
申请日：2023-09-22
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Syunsuke KIDO , Takanori UEJIMA , Naru MORITO , Masanari MIURA , Yukiya YAMAGUCHI , Takuma KUROYANAGI , Tomomi YASUDA , Masanori KATO , Yuuki FUKUDA
CPC classification number: H03H9/542 , H03F3/245 , H03F2200/451 , H03F2200/294
Abstract: A radio-frequency module includes a module substrate having main surfaces opposite to each other, a hybrid filter having a first acoustic wave resonator, a first inductor, and a first capacitor, a switch for connecting and disconnecting an antenna connection terminal and the hybrid filter, and a coupler disposed on a path linking the antenna connection terminal and the switch. The first acoustic wave resonator is disposed on the main surface, the switch is included in a semiconductor IC disposed on the main surface, the coupler is disposed inside the module substrate, and in plan view of the module substrate, the semiconductor IC at least partially overlaps the first acoustic wave resonator, and the semiconductor IC and the coupler at least partially overlaps.
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公开(公告)号：US20230261642A1
公开(公告)日：2023-08-17
申请号：US18305397
申请日：2023-04-24
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hirotsugu MORI , Syunsuke KIDO
CPC classification number: H03H9/703 , H03H9/568 , H04B1/0057
Abstract: A multiplexer includes first and second filters connected to an antenna connecting terminal. The first filter includes a first series arm resonator and a first parallel arm resonator. Each of the first series arm resonator and the first parallel arm resonator includes a bottom electrode, a top electrode, and a piezoelectric layer. At least one of resonators forming the first series arm resonator and the first parallel arm resonator is constituted by plural series-divided resonators. The second filter includes plural second series arm resonators and a second parallel arm resonator. Each of the plural second series arm resonators and the second parallel arm resonator includes a bottom electrode, a top electrode, and a piezoelectric layer. Among the plural second series arm resonators, the top electrodes or the bottom electrodes of two adjacent second series arm resonators are formed by one electrode.
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公开(公告)号：US20230112175A1
公开(公告)日：2023-04-13
申请号：US17818990
申请日：2022-08-11
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Keisuke NISHIO , Yukiteru SUGAYA , Masaki TADA , Masanori KATO , Syunsuke KIDO , Hiroshi MATSUBARA
Abstract: In a radio-frequency module, a hybrid filter includes an acoustic wave filter including at least one acoustic wave resonator, an inductor having a winding portion, and a capacitor. A plurality of outer electrodes of the acoustic wave filter includes a first input and output electrode connected to a first signal terminal, a second input and output electrode connected to a second signal terminal, and a ground electrode connected to a ground terminal. The inductor is disposed on a first major surface of a mounting substrate and is adjacent to the acoustic wave filter in plan view in a thickness direction of the mounting substrate. When viewed in a direction of a winding axis of the winding portion of the inductor, an inner part of the winding portion in the inductor does not overlap any of the first input and output electrode, the second input and output electrode, and ground electrode.
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公开(公告)号：US20170214386A1
公开(公告)日：2017-07-27
申请号：US15480522
申请日：2017-04-06
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Syunsuke KIDO
CPC classification number: H03H9/145 , H03H9/02007 , H03H9/02535 , H03H9/0557 , H03H9/1014 , H03H9/1071 , H03H9/175 , H03H9/25
Abstract: A filter component with a passive element includes a filter substrate, an elastic wave filter including an elastic wave resonator in a predetermined region of one main surface of the filter substrate, and a support substrate on another main surface of the filter substrate, wherein a passive element is provided in or on a support substrate, the passive element includes a wiring electrode and is electrically connected to the elastic wave filter.
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公开(公告)号：US20160329876A1
公开(公告)日：2016-11-10
申请号：US15212489
申请日：2016-07-18
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Munehisa WATANABE , Hideki IWAMOTO , Hajime KANDO , Syunsuke KIDO
CPC classification number: H03H9/0222 , H01L41/04 , H01L41/047 , H01L41/0477 , H01L41/18 , H01L41/22 , H03H3/02 , H03H3/04 , H03H3/08 , H03H3/10 , H03H9/02574 , H03H9/02834 , H03H9/54 , H03H2003/023 , H03H2003/027 , Y10T29/42 , Y10T29/49005 , Y10T29/49155
Abstract: An elastic wave device includes a supporting substrate, a high-acoustic-velocity film stacked on the supporting substrate and in which an acoustic velocity of a bulk wave propagating therein is higher than an acoustic velocity of an elastic wave propagating in a piezoelectric film, a low-acoustic-velocity film stacked on the high-acoustic-velocity film and in which an acoustic velocity of a bulk wave propagating therein is lower than an acoustic velocity of a bulk wave propagating in the piezoelectric film, the piezoelectric film is stacked on the low-acoustic-velocity film, and an IDT electrode stacked on a surface of the piezoelectric film.
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Patent Agency Ranking
公开(公告)号：US20250047263A1
公开(公告)日：2025-02-06
申请号：US18635187
申请日：2024-04-15
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Syunsuke KIDO
IPC: H03H9/64
Abstract: A filter includes a series arm resonator and parallel arm circuits, in which the parallel arm circuit has a parallel arm resonator and a frequency variable circuit connected in series to each other, the frequency variable circuit has a capacitor and a switch connected parallel to each other, the other parallel arm circuit has a capacitor and a switch connected in series to each other.
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公开(公告)号：US20240014805A1
公开(公告)日：2024-01-11
申请号：US18474261
申请日：2023-09-26
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Tomomi YASUDA , Syunsuke KIDO , Masanori KATO , Takanori UEJIMA , Masanari MIURA , Naru MORITO , Yukiya YAMAGUCHI , Takuma KUROYANAGI , Yuuki FUKUDA
CPC classification number: H03H9/542 , H03F3/245 , H04B1/40 , H03F2200/294 , H03F2200/451
Abstract: A radio-frequency module includes a module substrate having main surfaces opposite to each other, a hybrid filter having a first acoustic wave resonator, a first inductor, and a first capacitor, and a first radio-frequency component, wherein a pass band width of the hybrid filter is greater than a resonant band width of the first acoustic wave resonator, one of the first acoustic wave resonator, the first inductor, and the first capacitor is disposed on the main surface, and the first radio-frequency component is disposed on the main surface.
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公开(公告)号：US20230318558A1
公开(公告)日：2023-10-05
申请号：US18116984
申请日：2023-03-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Masanori KATO , Syunsuke KIDO , Atsushi ONO , Hiroshi MATSUBARA
CPC classification number: H03H7/0115 , H04B1/40 , H03H9/542
Abstract: A radio-frequency circuit includes a first switch, a first filter, a second filter, a third filter, and a fourth filter. The first switch is capable of selectively connecting a first selection terminal or a second selection terminal to a first common terminal. The first filter and the second filter are connected to the first selection terminal. The third filter and the fourth filter are connected to the second selection terminal. The first filter and the third filter are band pass filters. The second filter is a band elimination filter. A pass band of the first filter and a rejection band of the second filter overlap each other. The pass band of the first filter and a pass band of the third filter overlap each other.
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公开(公告)号：US20200212866A1
公开(公告)日：2020-07-02
申请号：US16727597
申请日：2019-12-26
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiroshi MATSUBARA , Masanori KATO , Syunsuke KIDO
Abstract: A filter circuit that secures the steepness from a pass range to an attenuation range while maintaining a wide-band transmission characteristic and a filter device including this filter circuit are formed. A filter circuit includes a first filter and a second filter. The first filter is a filter including an LC circuit in which a first frequency band is a pass band and a frequency band not higher than the first frequency band is an attenuation band. The second filter is a filter that attenuates a second frequency band within the first frequency band by using an attenuation pole produced by a resonance or an antiresonance of an acoustic wave resonator. Further, the first filter is placed closer to an antenna terminal than the second filter.
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10.发明申请公开(公告)号：US20190173448A1
公开(公告)日：2019-06-06
申请号：US16273192
申请日：2019-02-12
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Masanori KATO , Syunsuke KIDO
CPC classification number: H03H7/0161 , H03H7/01 , H03H7/38 , H03H9/465 , H03H9/542 , H03H9/605 , H03H9/6483 , H03H2007/013 , H03H2009/02299 , H04J1/045
Abstract: A filter includes two series arm resonators electrically connected in series between two input/output terminals, a parallel arm resonator electrically connected between a ground and a series arm between the two series arm resonators, an inductor electrically connected in parallel to the two series arm resonators, and a matching circuit electrically connected between one of the two series arm resonators and one of the input/output terminals, wherein the two series arm resonators and the parallel arm resonator define a pass band of a bandpass filter, the two series arm resonators and the inductor define an LC resonant circuit, respective anti-resonant frequencies of each of the two series arm resonators and a resonant frequency of the parallel arm resonator are located in a pass band of the LC resonant circuit, and a resonant frequency of the LC resonant circuit is lower than the resonant frequency of the parallel arm resonator.
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