公开(公告)号：US20240088865A1

公开(公告)日：2024-03-14

申请号：US18511405

申请日：2023-11-16

Applicant: Skyworks Solutions, Inc.

Inventor： Satoru Matsuda ,  Tatsuya Fujii ,  Yoshiro Kabe ,  Kenji Nagano

IPC: H03H9/02 ,  H03H9/145 ,  H03H9/25 ,  H03H9/64 ,  H03H9/72

CPC classification number: H03H9/02574 ,  H03H9/02559 ,  H03H9/02834 ,  H03H9/02842 ,  H03H9/14502 ,  H03H9/14541 ,  H03H9/25 ,  H03H9/6406 ,  H03H9/725

Abstract: An acoustic wave device is disclosed. The acoustic wave device includes a piezoelectric layer, an interdigital transducer electrode positioned over the piezoelectric layer, and an anti-refection layer over a conductive layer of the interdigital transducer electrode. The conductive layer can include aluminum, for example. The anti-reflection layer can include silicon. The anti-reflection layer can be free from a material of the interdigital transducer electrode. The acoustic wave device can further include a temperature compensation layer positioned over the anti-reflection layer in certain embodiments.

公开(公告)号：US20230387887A1

公开(公告)日：2023-11-30

申请号：US18325583

申请日：2023-05-30

Applicant: Skyworks Solutions, Inc.

Inventor： Tomoya Komatsu ,  Yiliu Wang ,  Toru Jibu

IPC: H03H9/72 ,  H03H9/02 ,  H03H9/64

CPC classification number: H03H9/72 ,  H03H9/02842 ,  H03H9/6483

Abstract: Aspects of this disclosure relate to a multiplexer that includes a first filter and a second filter coupled to a common node. The first filter includes an acoustic filter arranged to filter a radio frequency signal, a matching network coupled between the acoustic filter and the common node, and a parallel circuit coupled in series between the acoustic filter and the common node. The parallel circuit includes an inductive component in parallel with a capacitive component. In certain instances, the first filter is coupled to the common node via a switch, the matching network is coupled to a node between the acoustic filter and the switch, and the parallel circuit is coupled in series between the acoustic filter and the switch. Related methods, radio frequency modules, and wireless communication devices are also disclosed.

公开(公告)号：US07846490B2

公开(公告)日：2010-12-07

申请号：US12153909

申请日：2008-05-28

Applicant: Young Joo Oh

Inventor： Young Joo Oh

IPC: B05D5/12 ,  H01L41/18

CPC classification number: H03H3/08 ,  H01L41/314 ,  H03H9/02574 ,  H03H9/02653 ,  H03H9/02842 ,  Y10T29/42

Abstract: Disclosed are a piezoelectric substrate and a surface acoustic wave (SAW) filter. A piezoelectric substrate 10a includes a base member 11 including an oxide layer 12 with a plurality of grooves 12a on one surface of the base member 11; a buffer member 13 being formed on the oxide layer 12 to expose one end and another end of the oxide layer 12; an insulating member 14 being formed on another surface of the base member 11; and a piezoelectric member 15 being formed on the buffer member 13. A SAW filter using the piezoelectric substrate 10a, includes the base member 11 including the oxide layer 12 with the plurality of grooves 12a on one surface; the buffer member 13; the insulating member 14; the piezoelectric member 15; and a plurality of interdigital transducer (IDT) electrodes 17 and 17 being formed on the piezoelectric member 15 to receive an electrical signal, filter the electrical signal, and output the filtered electrical signal.

Abstract translation: 公开了压电基板和表面声波（SAW）滤波器。 压电基板10a包括：基部构件11，其包括在基底构件11的一个表面上具有多个凹槽12a的氧化物层12; 缓冲部件13形成在氧化物层12上，以露出氧化物层12的一端和另一端; 绝缘构件14形成在基底构件11的另一个表面上; 以及形成在缓冲部件13上的压电部件15.使用该压电基板10a的SAW滤波器包括在一个表面上具有多个槽12a的氧化物层12的基材11。 缓冲部件13; 绝缘构件14; 压电部件15; 并且在压电构件15上形成多个叉指式换能器（IDT）电极17和17，以接收电信号，对电信号进行滤波，并输出经过滤波的电信号。

公开(公告)号：US07528685B2

公开(公告)日：2009-05-05

申请号：US11380509

申请日：2006-04-27

Applicant: Satoru Tanaka

Inventor： Satoru Tanaka

IPC: H03H9/00 ,  H03H9/25 ,  H03H9/125

CPC classification number: H03H9/02842 ,  H03H9/02228 ,  H03H9/02551 ,  H03H9/14552 ,  H03H9/6426 ,  H03H9/643

Abstract: A lamb wave type high frequency device includes: an interdigital transducer (IDT) electrode having an electrode finger interdigitated therein; a pair of reflectors having an electrode finger and being disposed at both sides of a propagation direction of a lamb wave excited by the IDT electrode; and a piezoelectric substrate on a surface of which the IDT electrode and the reflectors are disposed, wherein a pitch of the electrode finger of the IDT electrode and a pitch of the electrode finger of the reflectors are different from one another.

Abstract translation: 兰姆波型高频器件包括：叉指式换能器（IDT）电极，其中具有互相指向的电极指; 一对反射器，具有电极指并设置在由IDT电极激发的兰姆波的传播方向的两侧; 以及其上设置有IDT电极和反射器的表面上的压电基板，其中IDT电极的电极指的间距和反射器的电极指的间距彼此不同。

公开(公告)号：US07271685B2

公开(公告)日：2007-09-18

申请号：US11619243

申请日：2007-01-03

Applicant: Nobunari Tanaka

Inventor： Nobunari Tanaka

IPC: H03H9/64

CPC classification number: H03H9/14552 ,  H03H9/02842 ,  H03H9/64

Abstract: A transversal surface acoustic wave filter includes an input-side interdigital electrode, an output-side interdigital electrode, and a shield electrode, which are provided on a surface wave substrate. The distance between an excitation point of the input-side interdigital electrode, which is closest to the shield electrode, and an intermediate point between the shield electrode-side end of the input-side interdigital electrode and the input-side interdigital electrode-side end of the shield electrode is in the range of about 0.8λ to about 0.975λ, wherein λ is the wavelength of a surface wave.

Abstract translation: 横向声表面波滤波器包括设置在表面波基板上的输入侧交叉指状电极，输出侧交叉指状电极和屏蔽电极。 最靠近屏蔽电极的输入侧交叉指状电极的激励点与输入侧叉指电极的屏蔽电极侧端部和输入侧叉指电极侧端部之间的中间点 的屏蔽电极在约0.8λ至约0.975λ的范围内，其中λ是表面波的波长。

公开(公告)号：US5051644A

公开(公告)日：1991-09-24

申请号：US510964

申请日：1990-04-19

Applicant: Peter Wright

Inventor： Peter Wright

IPC: H03H9/02 ,  H03H9/145

CPC classification number: H03H9/02842 ,  H03H9/02637 ,  H03H9/02771

Abstract: An electrode structure for use with a surface acoustic wave resonator which has the same velocity as the transducers and gratings but no reflections; a second embodiment provides an electrode structure having a velocity equal to the velocity of the transducers and gratings but that has a coefficient of reflectivity that can be predetermined by varying the width of the electrodes in the electrode structure.

公开(公告)号：US4916348A

公开(公告)日：1990-04-10

申请号：US342542

申请日：1989-04-24

Applicant: Bruce C. Beggs ,  Grantley O. Este

Inventor： Bruce C. Beggs ,  Grantley O. Este

IPC: H03H9/02

CPC classification number: H03H9/02842

Abstract: A grating is positioned on a surface acoustic wave device on a first axis in-line with the delay line for substantially reducing the amount of energy reflected on that axis to the transmitter and receiver. The grating site on the first axis at a position between the delay line and one of the edges of the device. The grating is comprised of a parallel series of grating members each oriented so as to extend at a first angle relative to the first axis, the grating members being generally longitudinally bisected by that axis. An optimum value for the first angle is provided by a theoretical analysis, and experimental results are presented. On the experimental device, the grating is defined by a series of parallel grooves formed in the surface of the device; however, the grating may also be defined by a series of metallic strips mounted on the surface of the device.

Abstract translation: 光栅位于与延迟线成一直线的第一轴上的表面声波装置上，用于基本上减少在该轴上反射到发射器和接收器的能量的量。 延迟线与设备边缘之间的位置处的第一轴上的光栅位置。 光栅由平行的光栅构件组成，每个光栅构件定向成相对于第一轴线以第一角度延伸，光栅构件大体上被该轴线纵向平分。 通过理论分析提供了第一个角度的最佳值，并给出了实验结果。 在实验装置上，光栅由形成在装置表面上的一系列平行凹槽限定; 然而，光栅也可以由安装在器件表面上的一系列金属条限定。

公开(公告)号：US4510410A

公开(公告)日：1985-04-09

申请号：US507463

申请日：1983-06-24

Applicant: Akitsuna Yuhara ,  Kazuo Nate ,  Tatsuro Toyama ,  Jun Yamada

Inventor： Akitsuna Yuhara ,  Kazuo Nate ,  Tatsuro Toyama ,  Jun Yamada

IPC: H03H9/25 ,  G10K11/36 ,  H03H3/08 ,  H03H9/02

CPC classification number: H03H9/02842 ,  G10K11/36

Abstract: An elastic surface wave device that has good frequency characteristics and no unwanted signals, and is highly suited for mass production, comprising a piezoelectric substrate, at least one pair of transmitting and receiving electrodes on the surface of said substrate, and elastic surface wave absorbers formed by curing a composition, the main component of which is a resin curable by ultraviolet radiation, disposed on at least part of the zone on said piezoelectric substrate that propagates unwanted elastic surface waves.

Abstract translation: 一种弹性表面波装置，其具有良好的频率特性，并且不需要不需要的信号，并且非常适合批量生产，包括压电基板，在所述基板的表面上的至少一对发送和接收电极以及形成的弹性表面波吸收体 通过固化其主要成分是通过紫外线辐射固化的树脂的组合物，其被设置在所述压电基板上的至少部分传播不需要的弹性表面波的区域上。

公开(公告)号：US4485364A

公开(公告)日：1984-11-27

申请号：US495376

申请日：1983-05-17

Applicant: Adrian J. DeVries

Inventor： Adrian J. DeVries

IPC: H03H9/02 ,  H03H9/145 ,  H03H9/64

CPC classification number: H03H9/14547 ,  H03H9/02842 ,  H03H9/14544 ,  H03H9/02637 ,  H03H9/1452

Abstract: An echo-compensating surface acoustic wave interdigital transducer in which the entire length of the end finger of the transducer at each end is connected directly or indirectly to at least one of the bus bars, the end finger extends only partially across the aperture of the transducer, and the space which is colinear with the end finger across the remaining portion of the aperture is not occupied by any surface-acoustic-wave-reflective structure. The end finger is substantially a quarter of an acoustic wavelength out of phase with the nearest interior finger with respect to an incident wave at the operating frequency of the transducer, so that the acoustic reflections of the end finger and the nearest interior finger are in phase-opposition to each other. In addition, the end finger spans one half of the transducer aperture, and is arranged to permit unobstructed acoustic reflection from the nearest interior finger over the other half of the aperture at one of the ends of the transducer, so that the resulting phase-opposed reflections are equal in amplitude in order to achieve mutual cancellation.

Abstract translation: 一种回声补偿表面声波叉指式换能器，其中每端处的换能器的端部指状物的整个长度直接或间接地连接到至少一个母线上，端部手指仅部分延伸穿过换能器的孔径 并且与终端手指在孔的剩余部分上共线的空间不被任何表面声波反射结构占据。 终端手指相对于在换能器的操作频率处的入射波相对于最近的内指，与声波波长相差大约四分之一，使得末端指和最近的内指的声反射是相位的 - 彼此相对。 此外，端部指状物跨过换能器孔的一半，并且被布置成允许在换能器的一端处的孔的另一半上的最近的内部指状物的无阻碍的声反射，使得所得到的相对的 反射幅度相等，以达到相互抵消。

公开(公告)号：US4426595A

公开(公告)日：1984-01-17

申请号：US341683

申请日：1982-01-22

Applicant: Kuninori Kawaura ,  Sumio Yamada ,  Noboru Wakatsuki ,  Masaaki Ono ,  Shigeo Tanji ,  Yoshiro Fujiwara ,  Masanobu Yanagisawa

Inventor： Kuninori Kawaura ,  Sumio Yamada ,  Noboru Wakatsuki ,  Masaaki Ono ,  Shigeo Tanji ,  Yoshiro Fujiwara ,  Masanobu Yanagisawa

IPC: H03H9/25 ,  H03H3/08 ,  H03H9/02 ,  H03H9/64 ,  H01L41/10

CPC classification number: H03H9/02842 ,  H03H9/02866

Abstract: An acoustic surface wave device comprises a piezoelectric substrate (1), an input transducer (2), an output transducer (3) and acoustical absorbent layer patterns (5, 6) for absorbing undesired acoustic surface waves and bulk waves (S.sub.4, S.sub.5). Each of the acoustical absorbent layer patterns (5, 6) has zigzag-shaped or triangular shaped edges, i.e., a recess portion (R.sub.1, R.sub.3) and a protruding portion (R.sub.2, R.sub.4). The recess portion has a further recess portion (R.sub.1 ', R.sub.3 ') which is formed diagonally with respect to the propagation path of acoustic surface waves.

Abstract translation: 声表面波装置包括用于吸收不需要的声表面波和体波的压电基片（1），输入换能器（2），输出换能器（3）和吸声层图案（5,6） 。 每个吸声层图案（5,6）都具有锯齿状或三角形边缘，即凹部（R1，R3）和突出部分（R2，R4）。 凹部具有相对于声表面波的传播路径对角地形成的另一凹部（R1'，R3'）。