公开(公告)号：US20080315973A1

公开(公告)日：2008-12-25

申请号：US12134854

申请日：2008-06-06

申请人： Hiroyuki NAKAMURA ,  Tetsuya TSURUNARI ,  Ken MATSUNAMI ,  Hidekazu NAKANISHI

发明人： Hiroyuki NAKAMURA ,  Tetsuya TSURUNARI ,  Ken MATSUNAMI ,  Hidekazu NAKANISHI

IPC分类号： H03H9/64 ,  H03H9/72

CPC分类号： H03H9/6433 ,  H03H9/0222 ,  H03H9/02834 ,  H03H9/1452

摘要： A surface acoustic wave filter includes a piezoelectric substrate including lithium niobate, a series resonator including a first interdigital transducer electrode provided on the piezoelectric substrate, and a parallel resonator including a second interdigital transducer electrode provided on the piezoelectric substrate and being electrically connected to the series resonator. An apodized weighting factor of the first interdigital transducer electrode is smaller than an apodized weighting factor of the second interdigital transducer electrode. This surface acoustic wave filter has a small loss.

摘要翻译： 表面声波滤波器包括：包括铌酸锂的压电基片，包括设置在压电基片上的第一指叉式换能器电极的串联谐振器，以及包括设置在压电基片上的电连接到该压电基片上的第二叉指换能器电极的并联谐振器 谐振器。 第一叉指换能器电极的变迹加权系数小于第二叉指换能器电极的变迹加权因子。 该声表面波滤波器损耗小。

公开(公告)号：US20110215884A1

公开(公告)日：2011-09-08

申请号：US13037663

申请日：2011-03-01

申请人： Joji FUJIWARA ,  Tetsuya TSURUNARI ,  Hiroyuki NAKAMURA

发明人： Joji FUJIWARA ,  Tetsuya TSURUNARI ,  Hiroyuki NAKAMURA

IPC分类号： H03H9/64

CPC分类号： H03H9/64

摘要： A ladder-type filter having plural elastic-wave resonators provided on a series arm and a parallel arm in a ladder shape on a piezoelectric substrate. Each of the elastic-wave resonators has an interdigital electrode. The interdigital electrode has plural electrode finger pairs formed of electrode fingers extending from first and second bus bars. The interdigital electrode included in the elastic-wave resonator provided on the parallel arm has an electrode cross width of the electrode fingers extending from the first and second bus bars 23 times or more of the wavelength of elastic waves excited by the interdigital electrodes.

摘要翻译： 具有设置在压电基板上的串联臂和梯形平行臂上的多个弹性波谐振器的梯形滤波器。 每个弹性波谐振器都具有叉指电极。 叉指电极具有由从第一和第二汇流条延伸的电极指形成的多个电极指对。 设置在平行臂上的弹性波形谐振器中包括的叉指电极具有从第一和第二母线延伸的电极指的电极交叉宽度，其是由叉指电极激发的弹性波的波长的23倍或更多倍。

公开(公告)号：US20120326801A1

公开(公告)日：2012-12-27

申请号：US13551853

申请日：2012-07-18

申请人： Tetsuya TSURUNARI ,  Hiroyuki NAKAMURA ,  Joji FUJIWARA

发明人： Tetsuya TSURUNARI ,  Hiroyuki NAKAMURA ,  Joji FUJIWARA

IPC分类号： H03H9/72

CPC分类号： H03H9/0576 ,  H03H9/725

摘要： A duplexer includes an acoustic wave element having a first terminal and a second terminal; a substrate; a first columnar conductor electrically connected to the first terminal, and drawn to a back surface of the substrate while partially in the substrate; a second columnar conductor electrically connected to the second terminal, and drawn to the back surface of the substrate while partially in the substrate. Additionally, a first ground pattern region is between the first columnar conductor drawn part and the second columnar conductor drawn part on the back surface of the substrate; a second ground pattern region is electrically connected to the first ground pattern region and arranged in the part not including the part between the first columnar conductor drawn part and the second columnar conductor drawn part; and a third columnar conductor electrically is connected to the first ground pattern region while partially in the substrate.

摘要翻译： 双工器包括具有第一端子和第二端子的声波元件; 底物; 电连接到第一端子的第一柱状导体，并且一部分地在衬底中被吸引到衬底的背面; 电连接到第二端子的第二柱状导体，并且一部分地在衬底中被吸引到衬底的背面。 此外，第一接地图案​​区域位于基板的背面的第一柱状导体拉伸部和第二柱状导体拉伸部之间。 第二接地图案区域电连接到第一接地图案​​区域并且布置在不包括第一柱状导体拉出部分和第二柱状导体拉出部分之间的部分中; 并且第三柱状导体电连接到第一接地图案​​区域，同时部分地在基板中。

公开(公告)号：US20110063046A1

公开(公告)日：2011-03-17

申请号：US12878104

申请日：2010-09-09

申请人： Joji FUJIWARA ,  Tetsuya TSURUNARI ,  Hiroyuki NAKAMURA ,  Rei GOTO

发明人： Joji FUJIWARA ,  Tetsuya TSURUNARI ,  Hiroyuki NAKAMURA ,  Rei GOTO

IPC分类号： H03H9/72 ,  H03H9/64

CPC分类号： H03H9/008 ,  H03H9/0071 ,  H03H9/725

摘要： A surface acoustic wave (SAW) filter device includes an input port for receiving an unbalanced signal, a pair of input/output ports, a first SAW filter for receiving the unbalanced signal from the input port and outputting balanced signals to the pair of input/output ports, a second SAW filter for receiving the balanced signals output from the pair of input/output ports and outputting balanced signals, and a pair of output ports for outputting the balanced signals output from the second SAW filter. The first SAW filter includes a first longitudinally-coupled SAW resonator having a first unbalanced signal input port and first and second balanced signal output ports, and a second longitudinally-coupled SAW resonator having a second unbalanced signal input port and third and fourth balanced signal output port. The first and second unbalanced signal input ports are electrically connected to the input port. The first and third balanced signal output ports both are electrically connected to one of the pair of input/output ports. The second and fourth balanced signal output ports both are electrically connected to another of the pair of input/output ports. This SAW filter device can suppress spurious and has a small insertion loss.

摘要翻译： 表面声波（SAW）滤波器装置包括用于接收不平衡信号的输入端口，一对输入/输出端口，用于从输入端口接收不平衡信号的第一SAW滤波器，并将平衡信号输出到输入/ 输出端口，第二SAW滤波器，用于接收从一对输入/输出端口输出的平衡信号并输出​​平衡信号;以及一对输出端口，用于输出从第二SAW滤波器输出的平衡信号。 第一SAW滤波器包括具有第一不平衡信号输入端口和第一和第二平衡信号输出端口的第一纵向耦合SAW谐振器，以及具有第二不平衡信号输入端口和第三和第四平衡信号输出端的第二纵向耦合SAW谐振器 港口。 第一和第二不平衡信号输入端口电连接到输入端口。 第一和第三平衡信号输出端口都电连接到一对输入/输出端口中。 第二和第四平衡信号输出端口都电连接到该对输入/输出端口中的另一个。 该SAW滤波器装置可以抑制杂散并具有小的插入损耗。

公开(公告)号：US20110221546A1

公开(公告)日：2011-09-15

申请号：US13040450

申请日：2011-03-04

申请人： Toru YAMAJI ,  Koji KAWAKITA ,  Tetsuya TSURUNARI ,  Joji FUJIWARA ,  Toru JIBU

发明人： Toru YAMAJI ,  Koji KAWAKITA ,  Tetsuya TSURUNARI ,  Joji FUJIWARA ,  Toru JIBU

IPC分类号： H03H9/64

CPC分类号： H03H9/1071 ,  H03H9/0547

摘要： An elastic wave device includes a piezoelectric substrate, an IDT electrode disposed on the piezoelectric substrate, an internal electrode disposed on the piezoelectric substrate and connected to the IDT electrode, a support pillar disposed on the piezoelectric substrate and provided around the IDT electrode, a top panel provided on the support pillar to cover a space above the IDT electrode, an insulation protector provided to cover the support pillar and the top panel, an external electrode disposed on the insulation protector, a conductor pattern disposed on the insulation protector in order to obtain inductance, and a connection electrode provided through the insulation protector, to connect the external electrode and the internal electrode to each other.

摘要翻译： 弹性波装置包括压电基板，设置在压电基板上的IDT电极，设置在压电基板上并连接到IDT电极的内部电极，设置在压电基板上并设置在IDT电极周围的支撑柱，顶部 设置在支撑柱上以覆盖IDT电极上方的空间的面板，设置成覆盖支撑柱和顶板的绝缘保护器，设置在绝缘保护器上的外部电极，设置在绝缘保护器上的导体图案，以获得 电感和通过绝缘保护器提供的连接电极，以将外部电极和内部电极彼此连接。