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公开(公告)号：US11595014B2
公开(公告)日：2023-02-28
申请号：US16727597
申请日：2019-12-26
发明人： Hiroshi Matsubara , Masanori Kato , Syunsuke Kido
摘要： 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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公开(公告)号：US11146229B2
公开(公告)日：2021-10-12
申请号：US16460362
申请日：2019-07-02
发明人： Masanori Kato
摘要： A filter having a pass band includes a series circuit in which a series arm resonator and a first inductor are connected in series with each other and which forms at least part of a signal path R connecting a first input/output terminal and a second input/output terminal and a parallel arm resonator connected between one end of the series circuit and a ground. The series circuit becomes inductive in the pass band. An anti-resonant frequency of the series arm resonator is higher than a frequency at a higher-frequency end of the pass band. A resonant frequency of the parallel arm resonator is higher than the anti-resonant frequency of the series arm resonator.
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公开(公告)号：US10250214B2
公开(公告)日：2019-04-02
申请号：US15794072
申请日：2017-10-26
发明人： Masanori Kato , Syunsuke Kido
摘要： 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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公开(公告)号：US09929719B2
公开(公告)日：2018-03-27
申请号：US15016872
申请日：2016-02-05
发明人： Morio Takeuchi , Hideki Muto , Masanori Kato
CPC分类号： H03H9/725 , H03H9/0009 , H03H9/0542 , H03H9/0566 , H03H9/52 , H03H9/605 , H03H9/6406 , H03H9/6483
摘要： A high-frequency module includes a connection line that interconnects a first SAW resonator and a second SAW resonator, and is connected to a second shunt connection terminal through a third SAW resonator. A connection line interconnecting a fourth SAW resonator and a second series connection terminal is connected to the second shunt connection terminal through a fifth SAW resonator. The second shunt connection terminal is connected to a ground through an inductor. A matching circuit is connected between a first series connection terminal and a first external connection terminal. The matching circuit is inductively or capacitively coupled to the inductor.
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公开(公告)号：US09160307B2
公开(公告)日：2015-10-13
申请号：US13956506
申请日：2013-08-01
发明人： Masanori Kato
IPC分类号： H03H9/46 , H03H9/74 , H03H9/05 , H03H9/60 , H03H9/64 , H03H9/70 , H03H9/72 , H04B1/52 , H03H9/00 , H03H7/42 , H05K1/02
CPC分类号： H03H9/74 , H03H9/0009 , H03H9/0057 , H03H9/0542 , H03H9/0571 , H03H9/0576 , H03H9/605 , H03H9/6483 , H03H9/706 , H03H9/725 , H04B1/52 , H05K1/0216 , H05K1/0243 , H05K1/0245
摘要： At least one duplexer includes first and second balanced terminals. A mount electrode layer includes a first balanced mount electrode, which is connected to the first balanced terminal, and a second balanced mount electrode, which is connected to the second balanced terminal. An internal electrode layer includes at least one internal ground electrode. When viewing a mount board from a side on which the duplexer is mounted, the first and second balanced mount electrodes do not oppose the same internal ground electrode.
摘要翻译： 至少一个双工器包括第一和第二平衡端子。 安装电极层包括连接到第一平衡端子的第一平衡安装电极和连接到第二平衡端子的第二平衡安装电极。 内部电极层包括至少一个内部接地电极。 当从安装有双工器的一侧观察安装板时，第一和第二平衡安装电极不与相同的内部接地电极相对。
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公开(公告)号：US11831299B2
公开(公告)日：2023-11-28
申请号：US17221014
申请日：2021-04-02
摘要： A high-frequency module includes a mounting substrate, a filter, and a common inductor. The mounting substrate includes a first main surface and a second main surface facing each other. The filter includes series arm resonators and parallel arm resonators, and is disposed on the first main surface. The mounting substrate includes a ground terminal on the second main surface. A first end of the common inductor is connected to all of the parallel arm resonators. A second end of the common inductor is connected to the ground terminal.
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公开(公告)号：US11533806B2
公开(公告)日：2022-12-20
申请号：US17221310
申请日：2021-04-02
摘要： A filter includes a first input/output electrode and the second input/output electrode, and is arranged on a first main surface of a mounting substrate. The mounting substrate includes a first land electrode, a second land electrode, a ground terminal, and a plurality of via conductors. The first land electrode is connected to the first input/output electrode. The second land electrode is connected to the second input/output electrode. The ground terminal is located closer to a second main surface side than the first main surface in a thickness direction of the mounting substrate. The plurality of via conductors is arranged between the first main surface and the second main surface, and is connected to the ground terminal. The plurality of via conductors is located between the first land electrode and the second land electrode in a plan view from the thickness direction of the mounting substrate.
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公开(公告)号：US11509290B2
公开(公告)日：2022-11-22
申请号：US16401512
申请日：2019-05-02
发明人： Masanori Kato
摘要： A filter includes a series arm resonator that defines at least a portion of a signal path connected between first and second terminals, a parallel arm resonator including one end that is grounded, a first inductor including one end that is connected to one end of the series arm resonator and another end that is connected to another end of the parallel arm resonator, and a second inductor including one end that is connected to another end of the series arm resonator and another end that is connected to the other end of the parallel arm resonator. A relative band width of the parallel arm resonator is smaller than a relative band width of the series arm resonator.
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公开(公告)号：US20190002097A1
公开(公告)日：2019-01-03
申请号：US16106806
申请日：2018-08-21
摘要： A wing flapping apparatus includes a motive power source; a power transmission mechanism; and a wing unit driven by the power transmission mechanism. The power transmission mechanism includes a rotation transmission member configured to rotate upon reception of motive power transmitted from the motive power source; a slider configured to linearly reciprocate in an X-axis direction upon reception of the motive power transmitted from the rotation transmission member and a rotating body configured to reciprocate in a rotation direction upon reception of the motive power transmitted from the slider. The wing unit is configured to swing such that its distal end moves approximately in the X-axis direction as the rotating body reciprocates in the rotation direction. The power transmission mechanism further includes a pair of crank arms each configured to connect the rotation transmission member and the slider. The pair of crank arms each has: one end rotatably connected to the rotation transmission member and the other end rotatably and slidably connected to the slider.
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公开(公告)号：US11757429B2
公开(公告)日：2023-09-12
申请号：US16828034
申请日：2020-03-24
发明人： Masanori Kato
CPC分类号： H03H9/542 , H03H9/0557 , H03H9/70
摘要： A hybrid filter device (1) includes an acoustic wave device (AD) that includes an acoustic wave resonator and a passive device (PD) that includes an inductor element or an inductor element and a capacitance element. At least one of the acoustic wave device (AD) and the passive device (PD) is mounted on a substrate (20) of the hybrid filter device (1) and the acoustic wave device (AD) and the passive device (PD) are electrically connected to each other. The acoustic wave device (AD) overlaps the passive device (PD) when the hybrid filter device (1) is viewed in a direction perpendicular to one main surface (20a) of the substrate (20).
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