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：US20070229194A1

公开(公告)日：2007-10-04

申请号：US11761939

申请日：2007-06-12

申请人： Yuichi Takamine

发明人： Yuichi Takamine

IPC分类号： H03H9/64

CPC分类号： H03H9/14588 ,  H03H9/0038 ,  H03H9/0057

摘要： A 5-IDT balanced SAW filter suppresses and prevents generation of a ripple within a pass band and exhibits excellent filter characteristics. The 5-IDT longitudinally coupled resonator-type SAW filter has a balanced-to-unbalanced conversion function. In areas in which first to fifth IDTs are adjacent to each other, each of the IDTs includes a narrow-pitched electrode finger portion. The IDTs are configured such that one condition selected from among conditions (1) to (3) and one condition selected from among conditions (4) to (6) are satisfied when the numbers and pitches of electrode fingers in the narrow-pitched electrode finger portions of the first to fifth IDTs 11 to 15 are denoted by N1 and P1, N2a and P2a, N2b and P2b, N3 and P3, N4a and P4a, N4b and P4b, and N5 and P5, respectively: Condition (1): When N1=N3=N5, 0.99≦P1/P3≦1.008 and P1=P5 Condition (2): When N1=N5 N2b=N4a, 1

摘要翻译： 5-IDT平衡SAW滤波器抑制并防止通带内的纹波产生并且具有优异的滤波器特性。 5-IDT纵向耦合谐振器型SAW滤波器具有平衡到不平衡的转换功能。 在第一至第五IDT彼此相邻的区域中，IDT中的每一个包括狭窄的电极指部。 IDT被配置为当窄条电极指中的电极指的数量和间距被满足时，满足条件（1）至（3）中选择的一个条件和从条件（4）至（6）中选择的一个条件 第一至第五IDT11至15的部分由N 1和P 1，N 2 a和P 2 a，N 2 b和P 2 b，N 3和P 3，N 4 a和P 4 a，N 条件（1）：当N 1 = N 3 = N 5时，0.99 <= P 1 / P 3 <= 1.008，P 1 = P 5条件（ 2）：当N 1 = N 5 N 2 b = N 4 a，1

N 2 ao r P 1 <> P 2 a。

公开(公告)号：US06963156B2

公开(公告)日：2005-11-08

申请号：US10410851

申请日：2003-04-10

申请人： Teruhisa Shibahara ,  Yuichi Takamine

发明人： Teruhisa Shibahara ,  Yuichi Takamine

IPC分类号： H01L41/09 ,  H01L41/18 ,  H03H9/00 ,  H03H9/145 ,  H03H9/64 ,  H01L41/00

CPC分类号： H03H9/0042 ,  H03H9/0061 ,  H03H9/14591

摘要： In a surface acoustic wave device in which balanced terminals extend from series IDTs, noise coming from an electrical-potential signal at the series connection point of the series IDTs is removed to improve the degree of balance. A surface acoustic wave filter includes a pair of surface acoustic wave reflectors disposed on a piezoelectric substrate along the propagation direction of surface acoustic waves, and a plurality of IDTs disposed between the two surface acoustic wave reflectors. Two opposing electrode fingers of the IDTs, which are series IDTs, are connected to corresponding balanced terminals, and the series connection point thereof is grounded. As a result, noise coming from an abnormal electrical-potential signal generated at the series connection point is removed to improve the degree of balance between the balanced terminals.

摘要翻译： 在平衡端子从串联IDT延伸的表面声波装置中，除去来自串联IDT的串联连接点处的电位信号的噪声以提高平衡度。 表面声波滤波器包括沿表面声波的传播方向设置在压电基板上的一对表面声波反射器，以及设置在两个表面声波反射器之间的多个IDT。 作为IDT的IDT的两个相对的电极指连接到相应的平衡端子，并且其串联连接点接地。 结果，消除了在串联连接点处产生的异常电位信号的噪声，以提高平衡端子之间的平衡度。

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。

公开(公告)号：US06737942B2

公开(公告)日：2004-05-18

申请号：US10122352

申请日：2002-04-16

申请人： Hiroki Watanabe ,  Yuichi Takamine

发明人： Hiroki Watanabe ,  Yuichi Takamine

IPC分类号： H03H964

CPC分类号： H03H9/6436 ,  H03H9/0042 ,  H03H9/14582 ,  H03H9/6469

摘要： A surface acoustic wave apparatus includes a plurality of interdigital transducers arranged in a longitudinally-coupled-resonator manner. The interdigital transducers are located adjacent to each other, and the pitch of an electrode finger located in an end portion of an IDT is made smaller than that of electrode fingers at the other portions in the interdigital transducers, and the duty of the electrode finger of which the pitch has been made smaller is smaller than that of the electrode fingers at the other portions.

摘要翻译： 表面声波装置包括以纵向耦合谐振器布置的多个叉指式换能器。 叉指式换能器彼此相邻地定位，并且位于IDT的端部中的电极指的间距比在叉指式换能器中的其他部分处的电极指的间距小，并且电极指的占空比 间距已经变小的部分比其他部分的电极指的小。

公开(公告)号：US06606016B2

公开(公告)日：2003-08-12

申请号：US09799387

申请日：2001-03-05

申请人： Yuichi Takamine

发明人： Yuichi Takamine

IPC分类号： H03H964

CPC分类号： H03H9/6423 ,  H03H9/0028 ,  H03H9/6436 ,  H03H9/6473 ,  H03H9/6476 ,  H03H2250/00

摘要： A surface acoustic wave device includes a first surface acoustic wave filter connected between an input terminal and an output terminal, a second surface acoustic wave filter having a different center frequency from that of the first surface acoustic wave filter, and which is connected between the input terminal and the output terminal and in parallel with the first surface acoustic wave filter, and at least one one-port surface acoustic wave resonator connected in series with the first or second surface acoustic wave filter, on at least one side between the input terminal and at least one of the first and second surface acoustic wave filters, or between the output terminal and at least one of the first and second surface acoustic wave filters. The anti-resonance frequency of the one one-port surface acoustic wave resonator is positioned on the side of higher frequencies than those of the pass band of the surface acoustic wave filter disposed on the side where the one-port surface acoustic wave resonator is connected in series.

摘要翻译： 表面声波装置包括连接在输入端子和输出端子之间的第一声表面波滤波器，具有与第一声表面波滤波器的中心频率不同的中心频率的第二声表面波滤波器，并且连接在输入端 和与第一表面声波滤波器并联的至少一个单端口声表面波谐振器，以及与第一或第二表面声波滤波器串联连接的至少一个单端口声表面波谐振器，该输入端子和输出端子在输入端子和 第一和第二表面声波滤波器中的至少一个，或者在输出端子与第一和第二声表面波滤波器中的至少一个之间。 一个单端口声表面波谐振器的反共振频率位于比设置在单端口声表面波谐振器的一侧的表面声波滤波器的通带的频率更高的一侧 系列。

公开(公告)号：US08169278B2

公开(公告)日：2012-05-01

申请号：US12796757

申请日：2010-06-09

申请人： Yuichi Takamine

发明人： Yuichi Takamine

IPC分类号： H03H9/72 ,  H03H9/64

CPC分类号： H03H9/725 ,  H03H9/02637 ,  H03H9/059 ,  H03H9/1092 ,  H03H9/1452 ,  H03H9/14573 ,  H03H9/643

摘要： A surface acoustic wave device in which miniaturization and a flat design implemented, is resistant to a deformation responsive to a pressure of a molten resin in the formation of a mold resin layer, and is less susceptible to a characteristic degradation. In the surface acoustic wave device, an IDT electrode is located on a piezoelectric substrate, and an insulator member is arranged such that a space B surrounding the IDT electrode is provided. For the purpose of reducing the area of the space B, reflectors having weighted portions are arranged on both sides of the IDT electrode. The weighted portions include electrode fingers of the reflectors that become shorter in length as they extend farther away from the IDT electrode. The shape of the space B is reduced accordingly.

摘要翻译： 实现微型化和平面设计的表面声波装置在形成模制树脂层时抵抗对熔融树脂的压力的响应的变形，并且不易受特性劣化的影响。 在表面声波装置中，IDT电极位于压电基板上，并且布置绝缘体构件以使得围绕IDT电极的空间B被设置。 为了减小空间B的面积，具有加重部分的反射器布置在IDT电极的两侧。 加权部分包括反射器的电极指，其长度越长越远离IDT电极。 空间B的形状相应地减小。

公开(公告)号：US07358832B2

公开(公告)日：2008-04-15

申请号：US11733068

申请日：2007-04-09

申请人： Yuichi Takamine

发明人： Yuichi Takamine

IPC分类号： H03H9/64

CPC分类号： H03H9/14582 ,  H03H9/0057 ,  H03H9/0061 ,  H03H9/14588

摘要： In a balanced SAW filter, a third IDT of a first SAW filter element includes first and second IDT segments, and similarly, an eighth IDT of a second SAW filter element includes first and second IDT segments. A first IDT, the first IDT segment, the second IDT segment, and a fifth IDT included in the first SAW filter element are respectively connected to a sixth IDT, the first IDT segment, the second IDT segment, and a tenth IDT segment included in the second SAW filter element by first to fourth wiring lines. The phase of electric signals transmitted through the first and third wiring lines differs from the phase of electric signals transmitted through the second and fourth wiring lines by 180°.

摘要翻译： 在平衡SAW滤波器中，第一SAW滤波器元件的第三IDT包括第一和第二IDT段，类似地，第二SAW滤波器元件的第八IDT包括第一和第二IDT段。 包括在第一SAW滤波器元件中的第一IDT，第一IDT段，第二IDT段和第五IDT分别连接到第六IDT，第一IDT段，第二IDT段和包括在第一IDT段中的第十IDT段 所述第二SAW滤波器元件通过第一至第四布线。 通过第一和第三布线传输的电信号的相位不同于通过第二和第四布线传输的电信号的相位为180°。

公开(公告)号：US20070152778A1

公开(公告)日：2007-07-05

申请号：US11686624

申请日：2007-03-15

申请人： Yuichi Takamine

发明人： Yuichi Takamine

IPC分类号： H03H9/64

CPC分类号： H03H9/0061 ,  H03H9/0057 ,  H03H9/14582 ,  H03H9/14588 ,  H03H9/6473

摘要： In a balanced-type surface acoustic wave filter, a first longitudinally coupled resonator surface acoustic wave filter unit connected to an unbalanced signal terminal is connected in a cascade arrangement to a second longitudinally coupled resonator surface acoustic wave filter unit connected to a first balanced signal terminal and a second balanced signal terminal. When the number of electrode fingers included in each of narrow pitch electrode finger portions in a center second IDT of the first longitudinally coupled resonator surface acoustic wave filter unit is defined as N1, and the number of electrode fingers included in each of narrow pitch electrode finger portions in a center fifth IDT of the second longitudinally coupled resonator surface acoustic wave filter unit is defined as N2, the numbers N1 and N2 are set to N1>N2.

摘要翻译： 在平衡型表面声波滤波器中，连接到不平衡信号端子的第一纵向耦合谐振器表面声波滤波器单元以级联方式连接到连接到第一平衡信号端子的第二纵向耦合谐振器表面声波滤波器单元 和第二平衡信号端子。 当包括在第一纵向耦合谐振器表面声波滤波器单元的中心第二IDT中的每个窄间距电极指部分中的电极指的数量被定义为N 1，并且包括在每个窄间距电极 第二纵向耦合谐振器表面声波滤波器单元的中心第五IDT中的指部被定义为N 2，数N 1和N 2被设置为N 1> N 2。

公开(公告)号：US07190242B2

公开(公告)日：2007-03-13

申请号：US10521776

申请日：2004-08-19

申请人： Yuichi Takamine

发明人： Yuichi Takamine

IPC分类号： H03H9/64 ,  H03H9/72

CPC分类号： H03H9/14582 ,  H03H9/0038 ,  H03H9/0057 ,  H03H9/008 ,  H03H9/14588

摘要： In a longitudinally-coupled-resonator surface acoustic wave filter unit having a first interdigital transducer, a central interdigital transducer, a second interdigital transducer, and first and second reflectors arranged such that the interdigital transducers are provided therebetween, for one comb electrode of the central interdigital transducer, first and second comb electrodes, which are substantially symmetrically bisected along a surface-acoustic-wave propagation direction, are provided. Between the first and second comb electrodes, a design parameter of at least one of the interdigital transducers, and the reflectors is set to be different from one another.

摘要翻译： 在具有第一叉指换能器，中央叉指式换能器，第二叉指式换能器以及第一和第二反射器的纵向耦合谐振器表面声波滤波器单元中，所述第一和第二反射器布置成使得叉指换能器设置在其间，用于中心的一个梳电极 提供了沿着表面声波传播方向基本对称地平分的叉指式换能器，第一和第二梳状电极。 在第一梳状电极和第二梳状电极之间，交叉指型传感器和反射器中的至少一个的设计参数被设定为彼此不同。