公开(公告)号：US12009804B2

公开(公告)日：2024-06-11

申请号：US17460737

申请日：2021-08-30

申请人： Murata Manufacturing Co., Ltd.

发明人： Ventsislav Yantchev

IPC分类号： H03H9/25 ,  H03H9/02 ,  H03H9/145 ,  H03H9/56 ,  H03H9/64

CPC分类号： H03H9/25 ,  H03H9/02228 ,  H03H9/02559 ,  H03H9/14582 ,  H03H9/56 ,  H03H9/6406

摘要： Acoustic resonator devices and filters are disclosed. An acoustic resonator includes a piezoelectric plate having front and back surfaces and an interdigital transducer (IDT). The IDT has a first pitch/mark zone with interleaved fingers having a pitch equal to a first pitch value P1 and a mark equal to a first mark value M1, and a second pitch/mark zone with interleaved fingers having a pitch equal to a second pitch value P2 and a mark equal to a second mark value M2. A radio frequency signal applied to the IDT causes excitation of a same shear primary acoustic mode by both the first pitch/mark zone and the second pitch/mark zone. P1, M1, P2, and M2, are selected such that an amplitude of spurious modes is reduced as compared to a device having a same primary acoustic mode and a single pitch/mark zone.

公开(公告)号：US08552618B2

公开(公告)日：2013-10-08

申请号：US12989395

申请日：2009-04-24

申请人： Takehiro Okumichi ,  Hiroyuki Tanaka

发明人： Takehiro Okumichi ,  Hiroyuki Tanaka

IPC分类号： H03H9/00

CPC分类号： H03H9/0009 ,  H03H9/02763 ,  H03H9/1457 ,  H03H9/14582 ,  H03H9/6433

摘要： Among the plurality of IDT electrodes having serially divided type structures, when designating any three continuously and sequentially arranged IDT electrodes as first, second, and third IDT electrodes in the order of arrangement, electrode fingers are arranged so that a first electrode finger pitch P1 at the boundary between the first IDT electrode and the second IDT electrode in the first region and a second electrode finger pitch P2 at the boundary between the second IDT electrode and the third IDT electrode in the first region are equal, the first and second electrode finger pitches P1 and P2 are the smallest among electrode finger pitches of IDT electrodes in the first region, and each of the IDT electrodes has a third electrode finger pitch P3 larger than the first and second electrode finger pitches P1 and P2 in the first region.

摘要翻译： 在具有串联分离型结构的多个IDT电极中，当以布置的顺序指定作为第一，第二和第三IDT电极的任何三个连续且顺序布置的IDT电极时，电极指被布置成使得第一电极指间距P1 第一区域中的第一IDT电极和第二IDT电极之间的边界以及第一区域中的第二IDT电极和第三IDT电极之间的边界处的第二电极指间隔P2相等，第一和第二电极指间距 P1和P2在第一区域中的IDT电极的电极指间隔中最小，并且每个IDT电极具有比第一区域中的第一和第二电极指间隔P1和P2大的第三电极指间距P3。

公开(公告)号：US08525621B2

公开(公告)日：2013-09-03

申请号：US12398237

申请日：2009-03-05

申请人： Takashi Yamane ,  Masaru Yata

发明人： Takashi Yamane ,  Masaru Yata

IPC分类号： H03H9/46 ,  H03H9/64

CPC分类号： H03H9/0222 ,  H03H9/0038 ,  H03H9/0071 ,  H03H9/0085 ,  H03H9/14582 ,  H03H9/14588

摘要： A boundary acoustic wave filter device includes an electrode structure provided at a boundary between a piezoelectric body and a dielectric body laminated on the piezoelectric body and utilizes an SH-type boundary acoustic wave that propagates along the boundary. In the boundary acoustic wave filter device, the electrode structure includes a longitudinally coupled resonator boundary acoustic wave filter portion that has a first IDT and second and third IDTs arranged respectively on both sides of the IDT in a direction in which the boundary acoustic wave propagates. At portions at which two IDTs are located adjacent to each other in the direction in which the boundary acoustic wave propagates, narrow pitch electrode finger portions are provided in the IDTs, and the pitch of the electrode fingers of the narrow pitch electrode finger portion is different from the pitch of the electrode fingers of each of the narrow pitch electrode finger portions.

摘要翻译： 一种边界声波滤波器装置，包括设置在压电体和层叠在压电体上的电介质体之间的边界处的电极结构，利用沿边界传播的SH型边界声波。 在边界声波滤波器装置中，电极结构包括纵向耦合的谐振器边界弹性波滤波器部分，其具有在边界声波传播的方向上分别布置在IDT的两侧上的第一IDT和第二和第三IDT。 在两个IDT彼此相邻的部分，在声波传播的方向上，在IDT中设置窄间距电极指部分，窄间距电极指部分的电极指的间距不同 从每个窄间距电极指部分的电极指的间距开始。

公开(公告)号：US20130214873A1

公开(公告)日：2013-08-22

申请号：US13857169

申请日：2013-04-05

申请人： Murata Manufacturing Co., Ltd.

发明人： Yuichi TAKAMINE

IPC分类号： H03H9/72

CPC分类号： H03H7/42 ,  H03H9/0047 ,  H03H9/0085 ,  H03H9/0576 ,  H03H9/059 ,  H03H9/1085 ,  H03H9/14582 ,  H03H9/6433 ,  H03H9/725

摘要： In an elastic wave demultiplexer having excellent isolation characteristics, a first ground wiring electrode is connected to a second ground wiring electrode, via first ground via-hole electrodes. The first ground wiring electrode is connected to ground land electrodes via second ground via-hole electrodes. The second ground wiring electrode is connected to a ground terminal via third ground via-hole electrodes. The number of the first ground via-hole electrodes is greater than the number of the second ground via-hole electrodes and the number of the third ground via-hole electrodes.

摘要翻译： 在具有优异的隔离特性的弹性波解复用器中，第一接地布线电极通过第一接地通孔电极连接到第二接地布线电极。 第一接地布线电极经由第二接地通孔电极连接到接地电极。 第二接地线电极通过第三接地通孔电极连接到接地端子。 第一接地通孔电极的数量大于第二接地通孔电极的数量和第三接地通孔电极的数量。

公开(公告)号：US08344815B2

公开(公告)日：2013-01-01

申请号：US13125239

申请日：2009-10-22

申请人： Kunihito Yamanaka

发明人： Kunihito Yamanaka

IPC分类号： H01L41/04 ,  H03H9/64 ,  H03B5/30

CPC分类号： H03H9/02551 ,  H03H9/0547 ,  H03H9/14517 ,  H03H9/14555 ,  H03H9/1457 ,  H03H9/14582 ,  H03H9/25 ,  H03H9/643

摘要： In a surface acoustic wave resonator in which an IDT having electrode fingers for exciting surface acoustic waves is formed on a crystal substrate, the line occupying ratio causing the maximum electromechanical coupling coefficient and the line occupying ratio causing the maximum reflection of the surface acoustic waves in the IDT are different from each other, the center of the IDT has the line occupying ratio causing an increase in electromechanical coupling coefficient in comparison with the edges of the IDT, and the edges of the IDT have the line occupying ratio causing an increase in reflection of the surface acoustic waves in comparison with the center of the IDT.

摘要翻译： 在晶体基板上形成具有用于激发表面声波的电极指的IDT的表面声波谐振器中，导致最大机电耦合系数和线占有率的线占有率导致表面声波的最大反射 IDT彼此不同，IDT的中心具有与IDT的边缘相比机电耦合系数增加的线占有率，并且IDT的边缘具有导致反射增加的线占有率 的表面声波与IDT的中心相比。

公开(公告)号：US07902716B2

公开(公告)日：2011-03-08

申请号：US12091283

申请日：2006-10-27

申请人： Hiroyuki Tanaka ,  Tsuyoshi Nakai ,  Kiyohiro Iioka

发明人： Hiroyuki Tanaka ,  Tsuyoshi Nakai ,  Kiyohiro Iioka

IPC分类号： H01L41/08

CPC分类号： H03H9/0038 ,  H03H9/0071 ,  H03H9/0274 ,  H03H9/14582 ,  H03H9/14588

摘要： To provide a surface elastic wave apparatus that suppresses occurrence of fine ripples within a pass band, improves insertion loss and enhances the degree of balance. First and second surface acoustic wave elements (14, 15) that are parallel-connected to a surface acoustic wave resonator (16) respectively have three or more odd-numbered IDTs (2-4, 5-7), each having a plurality of electrode fingers placed along a propagation direction of a surface acoustic wave that is propagated over a piezoelectric substrate (1), and reflectors (8, 20, 21, 10), each having a plurality of electrode fingers that are placed on the two ends of the IDT row, and among all the electrode fingers respectively possessed by the IDTs and reflectors, the polarities of the electrode fingers placed adjacent to a different IDT or reflector are arranged symmetrically centered on the IDT located in the center.

摘要翻译： 为了提供抑制通带内的细微波纹发生的表面弹性波装置，可以提高插入损耗，提高平衡度。 与声表面波谐振器（16）并联的第一和第二表面声波元件（14,15）分别具有三个或更多个奇数IDT（2-4,5-7），每个具有多个 沿着在压电基板（1）上传播的表面声波的传播方向放置的电极指，以及反射器（8,20,21,10），每个反射器具有多个电极指， IDT行，以及分别由IDT和反射器所具有的所有电极指中，与不同的IDT或反射器相邻设置的电极指的极性以位于中心的IDT对称地布置。

公开(公告)号：US20090289740A1

公开(公告)日：2009-11-26

申请号：US12539875

申请日：2009-08-12

申请人： Yuichi Takamine

发明人： Yuichi Takamine

IPC分类号： H03H9/205

CPC分类号： H03H9/725 ,  H03H9/0028 ,  H03H9/0061 ,  H03H9/0085 ,  H03H9/14582 ,  H03H9/6433

摘要： A second band pass filter that is used in a filter device, which has a relatively high pass band, in the pass band of a first band pass filter is provided. One end of a second IDT of a second longitudinally coupled resonator surface acoustic wave filter portion is connected to a first balanced terminal and the other end thereof is connected to a second balanced terminal. Each of a first longitudinally coupled resonator surface acoustic wave filter portion and the second longitudinally coupled resonator surface acoustic wave filter portion has narrow pitch electrode finger portions. The number of electrode fingers of the narrow pitch electrode finger portion of the second IDT of the first longitudinally coupled resonator surface acoustic wave filter portion is greater than the number of electrode fingers of the narrow pitch electrode finger portion of the second IDT of the second longitudinally coupled resonator surface acoustic wave filter portion.

摘要翻译： 提供了在第一带通滤波器的通带中用于具有相对较高通带的滤波器装置中的第二带通滤波器。 第二纵向耦合谐振器表面声波滤波器部分的第二IDT的一端连接到第一平衡端子，另一端连接到第二平衡端子。 第一纵向耦合谐振器表面声波滤波器部分和第二纵向耦合谐振器表面声波滤波器部分中的每一个具有窄间距电极指部分。 第一纵向耦合谐振器表面声波滤波器部分的第二IDT的窄间距电极指部分的电极指的数量大于第二纵向耦合谐振器表面声波滤波器部分的第二IDT的窄间距电极指部分的电极指的数量 耦合谐振器表面声波滤波器部分。

公开(公告)号：US07425882B2

公开(公告)日：2008-09-16

申请号：US10595383

申请日：2005-08-10

申请人： Yuichi Takamine

发明人： Yuichi Takamine

IPC分类号： H03H9/64

CPC分类号： H03H9/0071 ,  H03H9/0038 ,  H03H9/14582 ,  H03H9/14588 ,  H03H9/6436 ,  H03H9/6476

摘要： In a balanced-type surface acoustic wave filter, IDTs in the center of each of first and second longitudinally coupled resonator type surface acoustic wave filter sections are connected to an unbalanced input terminal, first and third IDT sections on both the sides of the center IDT are connected to first and second balanced output terminals, respectively, the first and third IDTs have narrow pitch electrode finger sections N, and when an electrode finger pitch of the narrow pitch electrode finger section of the second IDT is P1, an electrode finger pitch of the narrow pitch electrode finger section of the first and third IDTs is P2, the number of electrode fingers of the second IDT except for the narrow pitch electrode finger section of the IDT is K1, and the number of electrode fingers of the first and third IDT except for the narrow pitch electrode finger section is K2, P1>P2 and 1.12≦K1/K2≦1.65 are satisfied.

摘要翻译： 在平衡型表面声波滤波器中，第一和第二纵向耦合谐振器型表面声波滤波器部分的中心的IDT与不平衡输入端子连接，中心IDT的两侧的第一和第三IDT部分 分别连接到第一和第二平衡输出端子，第一和第三IDT具有窄间距电极指部分N，并且当第二IDT的窄间距电极指部分的电极指间距为P 1时，电极指间距 第一和第三IDT的窄间距电极指部分的电极指数为P 2，IDT的窄间距电极指部分以外的第二IDT的电极指数为K 1，第一IDT的电极指的数量为 除了窄间距电极指部分之外的第三IDT是K 2，P 1> P 2和1.12 <= K 1 / K 2 <= 1.65。

公开(公告)号：US07330089B2

公开(公告)日：2008-02-12

申请号：US11672241

申请日：2007-02-07

申请人： Masaru Yata

发明人： Masaru Yata

IPC分类号： H03H9/64

CPC分类号： H03H9/0085 ,  H03H9/0071 ,  H03H9/0222 ,  H03H9/02748 ,  H03H9/14582 ,  H03H9/25 ,  H03H9/6476

摘要： In a balanced acoustic wave filter device, first and second acoustic wave filter sections that are connected in parallel to an unbalanced terminal are connected to first and second balanced terminals, respectively. The first and second surface acoustic wave filter sections are configured such that the phases of the first and second balanced terminals differ by 180 degrees. The first and second acoustic wave filter sections are longitudinally coupled resonator-type acoustic wave filter sections each including a plurality of IDTs disposed in a direction in which acoustic waves propagate. The total number of pairs of electrode fingers of the IDTs in the second acoustic wave filter section in which the polarities of electrode fingers that are adjacent to each other in an area in which IDTs are adjacent to each other are opposite to each other is greater than the total number of pairs of electrode fingers of the IDTs in the first acoustic wave filter section in which the polarities of electrode fingers that are adjacent to each other in an area in which IDTs are adjacent to each other in the direction in which acoustic waves propagate are equal to each other.

摘要翻译： 在平衡声波滤波器装置中，与不平衡端子并联连接的第一和第二声波滤波器部分分别连接到第一和第二平衡端子。 第一和第二表面声波滤波器部分被配置成使得第一和第二平衡端子的相位相差180度。 第一和第二声波滤波器部分是纵向耦合的谐振器型声波滤波器部分，每个声波滤波器部分包括沿声波传播的方向设置的多个IDT。 第二声波滤波器部分中的IDT的电极指对的总数彼此相邻的区域中彼此相邻的电极指的极性彼此相对大， 第一声​​波滤波器部分中的IDT的电极指的对的总数，其中在声波传播的方向上IDT彼此相邻的区域中彼此相邻的电极指的极性 彼此相等。

公开(公告)号：US06936952B2

公开(公告)日：2005-08-30

申请号：US10665107

申请日：2003-09-19

申请人： Yuichi Takamine

发明人： Yuichi Takamine

IPC分类号： H03H9/00 ,  H03H9/145 ,  H03H9/25 ,  H03H9/64 ,  H01L41/08

CPC分类号： H03H9/0042 ,  H03H9/0038 ,  H03H9/0071 ,  H03H9/14582 ,  H03H9/14588 ,  H03H9/14591

摘要： A surface acoustic wave device has a balanced-to-unbalanced conversion function, in which the common mode in the vicinity of outside the passband is satisfactory. The surface acoustic wave device includes surface acoustic wave filters having interdigital transducers (IDTs) arranged along a surface acoustic wave propagation direction, which filters are provided on a piezoelectric substrate so as to have a balanced-to-unbalanced conversion function, and balanced signal terminals are correspondingly connected to the surface acoustic wave filters. Surface acoustic wave resonators including an interdigital transducer sandwiched between reflectors are correspondingly connected in series to the balanced signal terminals. The center-to-center distance between mutually adjacent electrode fingers in the reflectors and the interdigital transducer in one of the surface acoustic wave resonators differs from that of the other surface acoustic wave resonator.

摘要翻译： 表面声波装置具有平衡不平衡转换功能，其中通带外部附近的共模令人满意。 表面声波装置包括具有沿声表面波传播方向布置的叉指式换能器（IDT）的表面声波滤波器，在压电基板上设置滤波器以具有平衡不平衡转换功能，平衡信号端子 相应地连接到表面声波滤波器。 包括夹在反射器之间的叉指式换能器的表面声波谐振器相应地与平衡信号端子连接。 反射器中相互相邻的电极指之间的中心到中心的距离和表面声波谐振器之一的叉指换能器与另一声表面波谐振器的不同。