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1. 发明授权

US12136908B2 Method of making an acoustic wave resonator with mass loading strip for suppression of hyperbolic mode 有权
公开(公告)号：US12136908B2
公开(公告)日：2024-11-05
申请号：US18529276
申请日：2023-12-05
申请人： Skyworks Solutions, Inc.
发明人： Yuya Hiramatsu , Rei Goto , Yumi Torazawa
IPC分类号： H03H9/02 , H03F3/24 , H03H9/145 , H03H9/25 , H03H9/64 , H03H9/72
CPC分类号： H03H9/02889 , H03F3/245 , H03H9/02559 , H03H9/02834 , H03H9/02992 , H03H9/145 , H03H9/14541 , H03H9/1457 , H03H9/25 , H03H9/6406 , H03H9/6489 , H03H9/725 , H03F2200/451
摘要： Aspects of this disclosure relate to a method for making an acoustic wave resonator with hyperbolic mode suppression. The acoustic wave resonator can include a piezoelectric layer, an interdigital transducer electrode, a temperature compensation layer, and a mass loading strip. The mass loading strip can be a conductive strip. The mass loading strip can overlap edge portions of fingers of the interdigital transducer electrode. A layer of the mass loading strip can have a density that is at least as high as a density of a material of the interdigital transducer electrode. The material of the interdigital transducer can impact acoustic properties of the acoustic wave resonator.

2. 发明公开

US20240106415A1 SURFACE ACCOUSTIC WAVE FILTER WITH IMPROVED ATTENUATION 审中-公开
公开(公告)号：US20240106415A1
公开(公告)日：2024-03-28
申请号：US18471465
申请日：2023-09-21
申请人： WISOL CO., LTD.
发明人： Hyung Gon KIM , Tae Hyeong KWON , Jae Seung CHOI
IPC分类号： H03H9/64 , H03H9/02 , H03H9/145 , H03H9/25
CPC分类号： H03H9/6489 , H03H9/02992 , H03H9/14541 , H03H9/25
摘要： Provided is a surface acoustic wave filter with improved attenuation characteristics. The surface acoustic wave filter includes: a plurality of series resonators which are connected between an input terminal and an output terminal; and at least one parallel resonator which connects between a ground terminal and two adjacent series resonators among the plurality of series resonators, wherein at least one of the plurality of series resonators includes: first and second bus bars, which extend parallel to each other in a first direction within first to third areas sequentially arranged on a substrate; a plurality of first interdigital (IDT) transducer electrodes which extend in a second direction perpendicular to the first direction from the first bus bar; and a plurality of second IDT electrodes which extend in the second direction from the second bus bar and are alternately arranged with the plurality of first IDT electrodes, wherein the plurality of first IDT electrodes and the plurality of second IDT electrodes are alternately arranged with a reference period in the second area, are alternately arranged in the first area with a period which gets smaller than a reference period in the direction of one end of the first bus bar, and are alternately arranged in the third area with a period which gets smaller than a reference period in the direction of the other end of the first bus bar.

3. 发明授权

US11848663B2 Resonant cavity surface acoustic wave (SAW) filters 有权
公开(公告)号：US11848663B2
公开(公告)日：2023-12-19
申请号：US17263880
申请日：2019-07-25
申请人： FREC'N'SYS
发明人： Sylvain Ballandras , Thierry LaRoche
IPC分类号： H03H9/64 , H03H9/02
CPC分类号： H03H9/6483 , H03H9/02669 , H03H9/02724 , H03H9/02771 , H03H9/02905 , H03H9/6489
摘要： A coupled cavity filter structure that uses a surface acoustic wave, in particular, a guided surface acoustic wave, comprises an acoustic wave propagating substrate, at least one input transducer structure and one output transducer structure, provided over the substrate, each comprising inter-digitated comb electrodes, at least one reflecting structure comprising at least one or more metallic strips positioned at a distance and in between the input and output transducer structures, in the direction of propagation of an acoustic wave. The acoustic wave propagating substrate is a composite substrate comprising a base substrate and a piezoelectric layer. In additional embodiments, a coupled cavity filter structure comprises a groove. In additional embodiments, a SAW ladder filter device comprises at least two coupled cavity filter structures as described herein, wherein the at least two coupled cavity filter structures are positioned on a single line.

4. 发明公开

US20230308081A1 SURFACE ACOUSTIC WAVE DEVICE 审中-公开
公开(公告)号：US20230308081A1
公开(公告)日：2023-09-28
申请号：US18173594
申请日：2023-02-23
申请人： Skyworks Solutions, Inc.
发明人： Gong Bin Tang , Rei Goto , Hiroyuki Nakamura
IPC分类号： H03H9/64 , H03H9/02 , H03H3/08
CPC分类号： H03H9/6489 , H03H9/02992 , H03H3/08
摘要： Aspects of this disclosure relate to a surface acoustic wave device. The surface acoustic wave device includes a piezoelectric layer and an interdigital transducer. The interdigital transducer electrode includes a pair of electrodes, each electrode having a bus bar and fingers extending from the bus bar. The interdigital transducer electrode has an interdigital region defined by a portion of the fingers of the electrodes that interdigitate with each other. A dielectric layer is disposed over the interdigital transducer electrode outside the interdigital region and configured to reduce a loss of the surface acoustic wave device.

5. 发明公开

US20230231541A1 FILTER INCLUDING ACOUSTIC WAVE RESONATOR IN PARALLEL WITH CIRCUIT ELEMENT 审中-公开
公开(公告)号：US20230231541A1
公开(公告)日：2023-07-20
申请号：US18084014
申请日：2022-12-19
申请人： Skyworks Solutions, Inc.
发明人： Tomoya Komatsu , Satoru Ikeuchi , Stephane Richard Marie Wloczysiak
IPC分类号： H03H9/64 , H03H9/02 , H03H9/48 , H03H9/25
CPC分类号： H03H9/6489 , H03H9/02102 , H03H9/48 , H03H9/02834 , H03H9/25
摘要： Aspects of this disclosure relate to an acoustic wave filter that includes acoustic wave resonators arranged to filter a radio frequency signal. The acoustic wave resonators include a first acoustic wave resonator. The acoustic wave filter includes a circuit element in parallel with the first acoustic wave resonator in a stage of the acoustic wave filter. The circuit element and the first acoustic wave resonator have different resonant frequencies. The circuit element can reduce an impact of bulk mode of the first acoustic wave resonator on insertion loss of the acoustic wave filter. The first acoustic wave resonator can be a surface acoustic wave resonator in certain embodiments. The circuit element can be a second acoustic wave resonator or a capacitor, for example.

6. 发明授权

US11658641B2 High-frequency module 有权
公开(公告)号：US11658641B2
公开(公告)日：2023-05-23
申请号：US17068871
申请日：2020-10-13
申请人： Murata Manufacturing Co., Ltd.
发明人： Yukiteru Sugaya
IPC分类号： H03H9/64 , H03H9/05 , H03H9/10 , H03H9/02 , H03H9/25 , H03H9/00 , H03H9/145
CPC分类号： H03H9/6489 , H03H9/0009 , H03H9/02913 , H03H9/059 , H03H9/0557 , H03H9/1064 , H03H9/1092 , H03H9/14597 , H03H9/25 , H03H9/6483
摘要： A high-frequency module includes a module substrate including an internal wiring pattern, and a SAW filter including a piezoelectric substrate, an electrode pattern on the piezoelectric substrate, a support surrounding the electrode pattern, and a cover on the support covering the electrode pattern to define a hollow space together with the support and the piezoelectric substrate. The module substrate, the cover, and the piezoelectric substrate are disposed in this order in a perpendicular or substantially perpendicular direction with respect to the module substrate, and a shield electrode is provided on a surface of the cover that faces the module substrate or on a surface of the cover that faces the piezoelectric substrate.

7. 发明公开

US20230142184A1 Method, System, and Apparatus for Resonator Circuits and Modulating Resonators 审中-公开
公开(公告)号：US20230142184A1
公开(公告)日：2023-05-11
申请号：US17964530
申请日：2022-10-12
申请人： pSemi Corporation
发明人： Mark L. Burgener , James S. Cable
IPC分类号： H03H9/00 , H01Q1/50 , H03H7/38 , H03H7/48 , H03H9/54 , H03H9/64 , H03H9/70 , H03H9/72 , H03H7/40
CPC分类号： H03H9/0009 , H01Q1/50 , H03H7/38 , H03H7/40 , H03H7/48 , H03H9/0014 , H03H9/542 , H03H9/547 , H03H9/706 , H03H9/725 , H03H9/6403 , H03H9/6483 , H03H9/6489 , H03H2009/02204
摘要： Embodiments of resonator circuits and modulating resonators and are described generally herein. One or more acoustic wave resonators may be coupled in series or parallel to generate tunable filters. One or more acoustic wave resonances may be modulated by one or more capacitors or tunable capacitors. One or more acoustic wave modules may also be switchable in a filter. Other embodiments may be described and claimed.

8. 发明公开

US20230142089A1 STACKED FILTER PACKAGE HAVING MULTIPLE TYPES OF ACOUSTIC WAVE DEVICES 审中-公开
公开(公告)号：US20230142089A1
公开(公告)日：2023-05-11
申请号：US18053313
申请日：2022-11-07
申请人： Skyworks Solutions, Inc.
发明人： Atsushi Takano , Mitsuhiro Furukawa , Takeshi Furusawa
IPC分类号： H03H9/64 , H03H9/58
CPC分类号： H03H9/6489 , H03H9/585 , H03H9/586 , H03H9/6426
摘要： A stacked filter package is disclosed. The stacked filter package can include a first acoustic wave device having a first device type. The first acoustic wave device includes a first substrate having a first coefficient of thermal expansion. The stacked filter package can include a second acoustic wave device having a second device type different from the first device type. The second acoustic wave device includes a second substrate having a second coefficient of thermal expansion. The second coefficient of thermal expansion is at least double the first coefficient of thermal expansion. The stacked filter package can include a bonding structure between the first and second substrates. The bonding structure couples the first and second substrate.

9. 发明授权

US10868516B2 Surface acoustic wave filter 有权
公开(公告)号：US10868516B2
公开(公告)日：2020-12-15
申请号：US15807904
申请日：2017-11-09
申请人： Murata Manufacturing Co., Ltd.
发明人： Motoki Ozasa
IPC分类号： H03H9/64 , H03H9/25 , H03H9/145 , H03H9/02
CPC分类号： H03H9/6489 , H03H9/02992 , H03H9/14544 , H03H9/25 , H03H9/6436 , H03H9/6483
摘要： A surface acoustic wave filter includes a longitudinally coupled filter connected between an input terminal and an output terminal on a main surface of a piezoelectric substrate and that includes longitudinally coupled resonators and a parallel arm resonator connected between a node between the input terminal and the longitudinally coupled filter and ground. A line connecting IDT electrodes at an input side of a portion of the longitudinally coupled resonators to the ground and a line connecting the parallel arm resonator to the ground are independently provided and are connected to the same ground terminal.

10. 发明授权

US10840888B2 Multiplexer 有权
公开(公告)号：US10840888B2
公开(公告)日：2020-11-17
申请号：US16056581
申请日：2018-08-07
申请人： Murata Manufacturing Co., Ltd.
发明人： Toshiaki Takata
IPC分类号： H03H9/72 , H03H9/02 , H03H9/64 , H03H9/145 , H03H9/44 , H04B1/00
CPC分类号： H03H9/725 , H03H9/02818 , H03H9/14544 , H03H9/44 , H03H9/6436 , H03H9/6476 , H03H9/6483 , H03H9/6489 , H04B1/0057
摘要： A multiplexer includes a transmission-side filter, a reception-side filter, and a cancel circuit connected between a node M and a node N to cancel out a component in a predetermined frequency band that flows along first and second paths. The cancel circuit includes at least one longitudinally-coupled resonator. An average pitch between electrode fingers of interdigital transducer electrodes of the at least one longitudinally-coupled resonator is narrower than an average pitch between electrode fingers of interdigital transducer electrodes of each of series arm resonators and parallel arm resonators that determine the pass band of the transmission-side filter and an average pitch between electrode fingers of interdigital transducer electrodes of each of series arm resonators and parallel arm resonators that determine the pass band of the reception-side filter.

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