公开(公告)号：US20180152191A1

公开(公告)日：2018-05-31

申请号：US15817782

申请日：2017-11-20

申请人： SKYWORKS SOLUTIONS, INC.

发明人： Satoshi Niwa ,  Yoshiaki Ando ,  Hiroyuki Nakamura

IPC分类号： H03L7/093 ,  H01P1/205 ,  H03H9/02 ,  H01L41/047 ,  H03H9/54 ,  H04B1/10 ,  H01P1/20

CPC分类号： H03H9/6483 ,  H01L41/0471 ,  H01P1/2005 ,  H01P1/205 ,  H01P1/213 ,  H03H9/02047 ,  H03H9/542 ,  H03H9/547 ,  H03H9/568 ,  H03H9/605 ,  H03H9/6436 ,  H03H9/706 ,  H03L7/093 ,  H04B1/0458 ,  H04B1/1036 ,  H04B1/18 ,  H04B1/525

摘要： Aspects and examples provide improvement in the attenuation level near the passband within the stopband of the bandpass-type filter using a ladder-type circuit formed by a BAW resonator. In one example the filter includes a ladder-type circuit formed by a bulk acoustic wave (BAW) resonator, and a loop circuit connected between two distinct points on a signal path extending from an input to an output of the ladder-type circuit for phase-cancellation of signals at the two distinct points. The two distinct points may be the input and the output of the ladder-type circuit. The loop circuit may include a SAW resonator or a BAW resonator. The BAW resonator may be a film bulk acoustic resonator (FBAR) or solidly mounted resonator (SMR).

公开(公告)号：US20170331453A1

公开(公告)日：2017-11-16

申请号：US15531262

申请日：2015-10-15

申请人： SNAPTRACK, INC.

发明人： Andreas BERGMANN

IPC分类号： H03H9/145 ,  H03H9/72

CPC分类号： H03H9/14597 ,  H03H9/0038 ,  H03H9/14514 ,  H03H9/14588 ,  H03H9/6436 ,  H03H9/72

摘要： In an arrangement having a DMS filter, it is provided to symmetrically divide at least one of the transducers (W) of the DMS filter (DMS) into two sub-transducers (T,T′) electrically connected in parallel and to shift them apart from each other by an amount of at least a half wavelength. This results in the signals of the two sub-transducers canceling each other out at a frequency in a stopband and thereby generating an attenuation pole in the upper blocking region.

公开(公告)号：US09806693B2

公开(公告)日：2017-10-31

申请号：US15051828

申请日：2016-02-24

申请人： Murata Manufacturing Co., Ltd.

发明人： Yuichi Takamine

IPC分类号： H03H9/72 ,  H03H9/64 ,  H03H9/00 ,  H03H9/46

CPC分类号： H03H9/725 ,  H03H9/0009 ,  H03H9/009 ,  H03H9/46 ,  H03H9/6433 ,  H03H9/6436 ,  H03H9/6479 ,  H03H9/6483

摘要： A duplexer includes a transmission filter with a ladder circuit configuration and a reception filter including a ladder filter portion connected to an antenna terminal and a longitudinally coupled resonator-type surface acoustic wave filter. In the transmission filter, a coupling capacitor is connected between an end portion of an inductor nearer to parallel arm resonators and a wiring line connecting the series arm resonators of the ladder filter portion to each other in the reception filter.

公开(公告)号：US20170201230A1

公开(公告)日：2017-07-13

申请号：US15388364

申请日：2016-12-22

申请人： Seiko Epson Corporation

发明人： Masataka NOMURA ,  Shigeki SASAYAMA ,  Akira NAKADA

IPC分类号： H03H9/19 ,  H01L23/535

CPC分类号： H03H9/19 ,  H01L23/52 ,  H01L23/535 ,  H01L2224/48091 ,  H01L2224/48227 ,  H01L2924/00014 ,  H03B5/326 ,  H03H7/06 ,  H03H9/0547 ,  H03H9/6436 ,  H01L2224/45099

摘要： An oscillation module includes a loop interconnection, a high-frequency output interconnection, a differential amplifier, and an output terminal, the differential amplifier is connected to the output terminal with the high-frequency output interconnection, the high-frequency output interconnection crosses the loop interconnection in a grade-separated manner, and the loop interconnection is different in thickness between a crossing part and a non-crossing part with the high-frequency interconnection.

公开(公告)号：US09641155B2

公开(公告)日：2017-05-02

申请号：US14565093

申请日：2014-12-09

申请人： TAIYO YUDEN CO., LTD.

发明人： Shogo Inoue ,  Hiroshi Nakamura

IPC分类号： H03H9/72 ,  H03H9/70 ,  H03H9/00 ,  H03H9/02 ,  H03H9/54 ,  H03H9/58 ,  H03H9/64

CPC分类号： H03H9/725 ,  H03H9/0023 ,  H03H9/0071 ,  H03H9/0085 ,  H03H9/02669 ,  H03H9/542 ,  H03H9/585 ,  H03H9/6436 ,  H03H9/644 ,  H03H9/6483 ,  H03H9/6489 ,  H03H9/706

摘要： A duplexer includes a reception filter that is connected between a reception terminal and an antenna terminal and includes one or a plurality of series resonators that are acoustic wave resonators, and a transmission filter that is connected between a transmission terminal and the antenna terminal and includes one or a plurality of acoustic wave resonators, a resonance frequency of a first series resonator that is one of the one or the plurality of series resonators and is closest to the antenna terminal in the reception filter being higher than an upper limit frequency of a reception band of the reception filter.

公开(公告)号：US20140049341A1

公开(公告)日：2014-02-20

申请号：US14112547

申请日：2013-02-05

申请人： Tomoya Komatsu ,  Joji Fujiwara ,  Tetsuya Tsurunari ,  Hiroyuki Nakamura ,  Kazunori Nishimura

发明人： Tomoya Komatsu ,  Joji Fujiwara ,  Tetsuya Tsurunari ,  Hiroyuki Nakamura ,  Kazunori Nishimura

IPC分类号： H03H9/54

CPC分类号： H03H9/54 ,  H03H9/008 ,  H03H9/0566 ,  H03H9/0576 ,  H03H9/14582 ,  H03H9/14588 ,  H03H9/6436

摘要： A multimode elastic wave device includes a pair of reflectors, and a first interdigital transducer (IDT) electrode through a fifth IDT electrode arranged between the pair of reflectors. In this configuration, each of the average of electrode-finger pitches in the first IDT electrode and the average of electrode-finger pitches in the fifth IDT electrode is smaller than both of the average of electrode-finger pitches in the second IDT electrode and the average of electrode-finger pitches in the fourth IDT electrode.

摘要翻译： 多模弹性波装置包括一对反射器，以及通过布置在该对反射器之间的第五IDT电极的第一叉指式换能器（IDT）电极。 在该结构中，第一IDT电极中的电极指间隔的平均值和第五IDT电极中的电极指间隔的平均值均小于第二IDT电极中的电极指间隔的平均值， 第四IDT电极中电极指间隔的平均值。

公开(公告)号：US08289107B2

公开(公告)日：2012-10-16

申请号：US12778252

申请日：2010-05-12

申请人： Takao Mukai ,  Daisuke Ajima ,  Masaru Yata

发明人： Takao Mukai ,  Daisuke Ajima ,  Masaru Yata

IPC分类号： H03H9/25 ,  H03H9/64

CPC分类号： H03H9/6436 ,  H03H9/0071 ,  H03H9/0222 ,  H03H9/14582

摘要： A longitudinally-coupled resonator-type acoustic wave device includes first to third IDT electrodes disposed on a piezoelectric material and first and second reflectors disposed in acoustic wave propagation directions. Each of any two IDT electrodes adjacent to each other in the acoustic wave propagation directions, of the first to third IDT electrodes, has a narrower-pitch electrode finger portion at an edge thereof adjacent to the other IDT electrode. Most portions of the first to third IDT electrodes are apodized, and the narrower-pitch electrode finger portions and the electrode finger portions adjacent thereto are normally shaped.

摘要翻译： 纵向耦合的谐振器型声波器件包括设置在压电材料上的第一至第三IDT电极和布置在声波传播方向上的第一和第二反射器。 在第一至第三IDT电极的声波传播方向上彼此相邻的任何两个IDT电极中的每一个在与其它IDT电极相邻的边缘处具有窄间距电极指部。 第一至第三IDT电极的大多数部分被变迹，并且与其相邻的较窄节距电极指部分和电极指部分通常成形。

公开(公告)号：US08222971B2

公开(公告)日：2012-07-17

申请号：US12614510

申请日：2009-11-09

申请人： Yasuaki Shin

发明人： Yasuaki Shin

IPC分类号： H03H9/64 ,  H03H9/72

CPC分类号： H03H9/0071 ,  H03H9/0057 ,  H03H9/0085 ,  H03H9/02818 ,  H03H9/6436

摘要： An acoustic wave filter device includes a plurality of acoustic wave filters disposed on the same piezoelectric substrate, and achieves enlargement of out-of-passband attenuation without a large increase in its size. For at least the first acoustic wave filter, ends of second IDTs and of third IDTs connected to first and second balanced terminals, the ends being connected to a ground potential, are connected to a common connection line, the common connection line is connected to a ground terminal by a ground line, and a distance between a connection point, at which the ground line is connected to the common connection line, and the first balanced terminal, and a distance between the connection point and the second balanced terminal, is the same or substantially the same.

摘要翻译： 声波滤波器装置包括设置在同一压电基片上的多个声波滤波器，并且在其大小增加的情况下实现了通带外衰减的放大。 对于至少第一声波滤波器，连接到第一和第二平衡端子的第二IDT的端部和连接到地电位的第三IDT的端部连接到公共连接线，公共连接线连接到 接地端子和接地线连接到公共连接线的连接点与第一平衡端子之间的距离以及连接点和第二平衡端子之间的距离是相同的 或基本上相同。

公开(公告)号：US20120108167A1

公开(公告)日：2012-05-03

申请号：US13283292

申请日：2011-10-27

申请人： Jean-Luc Erb

发明人： Jean-Luc Erb

IPC分类号： H04B7/24 ,  H03H9/54 ,  H03H7/38 ,  H03H9/64

CPC分类号： H03H9/6436 ,  H03H9/6476 ,  H03H2260/00

摘要： A filter may be constructed from multiple acoustic elements in parallel. A filtering method may comprise passing a signal to be filtered through such parallel acoustic elements. Such filtering may be applicable to communication devices.

摘要翻译： 滤波器可以由多个并行的声学元件构成。 滤波方法可以包括通过这样的平行声学元件传递要滤波的信号。 这种过滤可以适用于通信设备。

公开(公告)号：US08102225B2

公开(公告)日：2012-01-24

申请号：US12627165

申请日：2009-11-30

申请人： Seiichi Takahara

发明人： Seiichi Takahara

IPC分类号： H03H9/64 ,  H03H9/54

CPC分类号： H03H9/0038 ,  H03H9/0057 ,  H03H9/02748 ,  H03H9/14588 ,  H03H9/14591 ,  H03H9/6436 ,  H03H9/6469

摘要： An acoustic wave filter device having a greatly reduced size includes a balance-unbalance conversion function and an input/output impedance ratio of about 1. The acoustic wave filter device includes a second IDT of a first acoustic wave filter portion that is connected to an unbalanced terminal. The second IDT includes first and second divided IDT portions which are divided in an overlap width direction and connected in series with each other between the unbalanced terminal and a ground potential. A fifth IDT of a second acoustic wave filter portion connected to the first acoustic wave filter portion includes first and second divided IDT portions which are divided in an acoustic wave propagating direction. The first and second divided IDT portions of the fifth IDT are connected to first and second balanced terminals, respectively.

摘要翻译： 具有大大减小的声波滤波器装置包括平衡不平衡转换功能和大约1的输入/输出阻抗比。声波滤波器装置包括第一声波滤波器部分的第二IDT，该第一声波滤波器部分连接到不平衡 终奌站。 第二IDT包括在重叠宽度方向上划分并在不平衡终端和地电位之间彼此串联连接的第一和第二分割IDT部分。 连接到第一声波滤波器部分的第二声波滤波器部分的第五IDT包括以声波传播方向分割的第一和第二分开的IDT部分。 第五IDT的第一和第二分割IDT部分分别连接到第一和第二平衡端子。