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31. 发明授权

US06674345B2 Surface acoustic wave filter and communication device using the filter 有权
标题翻译：表面声波滤波器和使用滤波器的通信装置
公开(公告)号：US06674345B2
公开(公告)日：2004-01-06
申请号：US10196433
申请日：2002-07-15
申请人： Hiroyuki Nakamura , Kazunori Nishimura , Akio Tsunekawa
发明人： Hiroyuki Nakamura , Kazunori Nishimura , Akio Tsunekawa
IPC分类号： H03H964
CPC分类号： H03H9/14547 , H03H9/0061 , H03H9/14582 , H03H9/25
摘要： A surface acoustic wave filter has a piezoelectric substrate; at least an input IDT electrod arranged on a piezoelectric substrate; and at least an output IDT electrod arranged on the piezoelectric substrate. A pitch of electrode fingers of the input IDT electrode and a pitch of electrode fingers of the output IDT electrode are different from each other.
摘要翻译：表面声波滤波器具有压电基板; 至少一个布置在压电基片上的输入IDT电极; 以及布置在所述压电基板上的至少一个输出IDT电极。输入IDT电极的电极指的间距和输出IDT电极的电极指的间距彼此不同。

32. 发明授权

US06469598B2 SAW filter with unidirectional transducer and communication apparatus using the same 有权
标题翻译：具有单向换能器的SAW滤波器及其使用的通信装置
公开(公告)号：US06469598B2
公开(公告)日：2002-10-22
申请号：US09803771
申请日：2001-03-12
申请人： Shigeru Tsuzuki , Tsutomu Igaki , Kazunori Nishimura , Ken Matsunami
发明人： Shigeru Tsuzuki , Tsutomu Igaki , Kazunori Nishimura , Ken Matsunami
IPC分类号： H03H964
CPC分类号： H03H9/14505
摘要： A surface acoustic wave (SAW) filter is disclosed which comprises a piezoelectric substrate and at least two Interdigital Transducers (IDTs) having four fingered electrodes in a region corresponding to one-wavelength of SAW excited on the piezoelectric substrate. At least one IDT is formed of at least one pair of fingered electrodes having different electrode widths. By provision of the pair of fingered electrodes being different in electrode width, the IDT can be given unidirectionality. Thus, a SAW filter producing a low insertion loss and having good amplitude and phase characteristics in the pass-band can be realized. Further, by using such SAW filter, a high-performance and low-cost communication apparatus, such as a CDMA-system mobile telephone, can be realized.
摘要翻译：公开了一种表面声波（SAW）滤波器，其包括压电基片和至少两个在对应于在压电基片上激发的SAW的一波长波长的区域中的四指指电极的指数指数变换器（IDT）。至少一个IDT由具有不同电极宽度的至少一对指形电极形成。通过设置电极宽度不同的一对指形电极，可以给予IDT单向性。因此，可以实现在通带中产生低插入损耗并具有良好振幅和相位特性的SAW滤波器。此外，通过使用这样的SAW滤波器，可以实现诸如CDMA系统移动电话的高性能和低成本通信装置。

33. 发明授权

US08723620B2 Antenna sharer with a ladder filter 有权
标题翻译：天线分享器与梯形滤波器
公开(公告)号：US08723620B2
公开(公告)日：2014-05-13
申请号：US13265338
申请日：2010-04-21
申请人： Kazunori Nishimura , Toru Jibu , Tetsuya Tsurunari
发明人： Kazunori Nishimura , Toru Jibu , Tetsuya Tsurunari
IPC分类号： H03H9/00 , H01P5/12
CPC分类号： H03H9/1452 , H03H9/008 , H03H9/02803 , H03H9/14526 , H03H9/643 , H03H9/6456 , H03H9/6479 , H03H9/725
摘要： An antenna sharer with both low loss and sharp attenuation characteristic in a wide band is achieved. Antennal sharer 1 of the present invention includes first filter 3 for passing a signal in the first frequency band, and second filter 4 for passing a signal in the second frequency band higher than the first frequency band. First filter 3 includes a ladder filter that includes first series resonator 6 and second series resonator 7 with an antiresonant frequency point higher than antiresonant frequency of first series resonator. Electromechanical coupling coefficient of first series resonator 6 is smaller than electromechanical coupling coefficient of second series resonator 7.
摘要翻译：实现了在宽带中具有低损耗和尖锐衰减特性的天线共享器。本发明的天线共享器1包括用于使第一频带中的信号通过的第一滤波器3和用于使比第一频带高的第二频带中的信号通过的第二滤波器4。第一滤波器3包括梯形滤波器，其包括具有比第一串联谐振器的反谐振频率高的反谐振频率点的第一串联谐振器6和第二串联谐振器7。第一串联谐振器6的机电耦合系数小于第二串联谐振器7的机电耦合系数。

34. 发明申请

US20140049341A1 MULTIMODE ELASTIC WAVE DEVICE 有权
标题翻译：多模弹性波形装置
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。

35. 发明申请

US20120188026A1 ANTENNA DUPLEXER 有权
标题翻译：天线双机
公开(公告)号：US20120188026A1
公开(公告)日：2012-07-26
申请号：US13353350
申请日：2012-01-19
申请人： Toru YAMAJI , Kazunori NISHIMURA , Joji FUJIWARA , Hiroyuki NAKAMURA
发明人： Toru YAMAJI , Kazunori NISHIMURA , Joji FUJIWARA , Hiroyuki NAKAMURA
IPC分类号： H03H9/72
CPC分类号： H03H9/725 , H01P1/205 , H03H9/14535 , H03H9/205 , H03H9/25 , H03H9/6483 , H04B1/0057
摘要： An antenna duplexer includes first and second filters connected to an antenna terminal. The first filter has a passband of a low frequency band. The second filter has a passband of a high frequency band. The second filter is a ladder-type filter including series-arm resonators and parallel-arm resonators. At least one parallel-arm resonator out of the parallel-arm resonators has a main resonance and an auxiliary resonance. Attenuation poles caused by the main resonance and the auxiliary resonance are within the low frequency band. This antenna duplexer has a high attenuation characteristic and a high isolation characteristic while maintaining a low insertion loss.
摘要翻译：天线双工器包括连接到天线端子的第一和第二滤波器。第一滤波器具有低频带的通带。第二滤波器具有高频带的通带。第二滤波器是包括串联谐振器和并联臂谐振器的梯形滤波器。并联臂谐振器中的至少一个并联臂谐振器具有主谐振和辅助谐振。由主谐振和辅助谐振引起的衰减极在低频带内。该天线双工器具有高衰减特性和高隔离特性，同时保持低插入损耗。

36. 发明授权

US08154171B2 Boundary acoustic wave device 有权
标题翻译：边界声波装置
公开(公告)号：US08154171B2
公开(公告)日：2012-04-10
申请号：US12680774
申请日：2008-10-21
申请人： Kazunori Nishimura , Hiroyuki Nakamura , Hidekazu Nakanishi , Ryouichi Takayama , Takashi Inoue
发明人： Kazunori Nishimura , Hiroyuki Nakamura , Hidekazu Nakanishi , Ryouichi Takayama , Takashi Inoue
IPC分类号： H03H9/25
CPC分类号： H03H9/0222 , H03H9/02574
摘要： A boundary acoustic wave device includes a first medium layer made of piezoelectric material, a second medium layer provided on the first medium layer, a third medium layer provided on the second medium layer, and an electrode provided at an interface between the second and third medium layers. The electrode drives the third medium layer to generate a transverse wave. A propagation speed of the transverse wave in the third medium layer is lower than a propagation speed of the transverse wave in the first medium layer. A propagation speed of the transverse wave in the second medium layer is lower than the propagation speed of the transverse wave in the first medium layer. This boundary acoustic wave device has a large electro-mechanical coupling coefficient.
摘要翻译：弹性边界波装置包括由压电材料制成的第一介质层，设置在第一介质层上的第二介质层，设置在第二介质层上的第三介质层，以及设置在第二介质和第三介质之间的界面处的电极层。电极驱动第三介质层产生横波。第三介质层中的横波的传播速度低于第一介质层中的横波的传播速度。第二介质层中的横波的传播速度低于第一介质层中的横波的传播速度。该声界面波装置具有大的机电耦合系数。

37. 发明授权

US07679474B2 Surface acoustic wave resonator, and surface acoustic wave filter 有权
标题翻译：表面声波谐振器和表面声波滤波器
公开(公告)号：US07679474B2
公开(公告)日：2010-03-16
申请号：US10580915
申请日：2005-01-06
申请人： Tsutomu Igaki , Kazunori Nishimura , Kazuo Ikeda , Ken Matsunami
发明人： Tsutomu Igaki , Kazunori Nishimura , Kazuo Ikeda , Ken Matsunami
IPC分类号： H03H9/25 , H03H9/145 , H03H9/64
CPC分类号： H03H9/14544 , H03H9/14582 , H03H9/6483
摘要： A surface acoustic wave resonator has a piezoelectric substrate (11), an IDT (13) formed of a plurality of electrode fingers (12) disposed on piezoelectric substrate (11), and reflectors (14) disposed near the opposite ends of IDT (13). The IDT (13) has a gradation region where the electrode finger pitch of the plurality of electrode fingers (12) at the opposite ends is different from the electrode finger pitch near the center of the IDT (13). In this gradation region, the electrode finger pitches are sequentially varied in the range from the electrode finger at the farthest end that is one end of the gradation region to the electrode finger lying at the other end of the gradation region. The electrode finger pitch of the electrode fingers at the farthest end that is one end of the gradation region is set to be 1 through 5% smaller than the electrode finger pitch near the center of the IDT (13).
摘要翻译：表面声波谐振器具有压电基板（11），由设置在压电基板（11）上的多个电极指（12）形成的IDT（13）和设置在IDT（13）的相对端附近的反射器）。 IDT（13）具有灰色区域，其中在相对端的多个电极指（12）的电极指间隔与IDT（13）的中心附近的电极指间隔不同。在该灰度区域中，电极指间隔在从作为灰度区域的一端的最远端的电极指与位于灰度区域的另一端的电极指的范围内依次变化。作为灰度区域的一端的最远端的电极指的电极指间距被设定为比IDT（13）的中心附近的电极指间隔小1〜5％。

38. 发明授权

US06870302B2 Interdigital transducer, surface acoustic wave filter, and radio communication apparatus 有权
标题翻译：叉指式换能器，表面声波滤波器和无线电通信装置
公开(公告)号：US06870302B2
公开(公告)日：2005-03-22
申请号：US10875845
申请日：2004-06-24
申请人： Hiroyuki Nakamura , Ken Matsunami , Kazunori Nishimura
发明人： Hiroyuki Nakamura , Ken Matsunami , Kazunori Nishimura
IPC分类号： H03H9/00 , H03H9/145 , H03H9/64 , H01L41/04 , H01L41/08 , H01L41/18 , H02N2/00
CPC分类号： H03H9/6426 , H03H9/0042 , H03H9/14505
摘要： An interdigital transducer has one-wavelength basic units of a single phase unidirectional transducer a plurality of each having three electrode fingers within one wavelength; and a plurality of one-wavelength basic units of a bidirectional electrode each having four electrode fingers within the one wavelength, wherein the one-wavelength basic units are properly arranged according to a desired filter characteristic, and one of the three electrode fingers of each one-wavelength basic unit of the single phase unidirectional transducer is wider than the two other electrode fingers, and of the four electrode fingers of each one-wavelength basic unit of the bidirectional electrode, one pair of two fingers is interdigitated to the other pair of two fingers, and an adjustment section is provided between the one-wavelength basic units of the single phase unidirectional transducer and the one-wavelength basic units of the bidirectional electrode.
摘要翻译：叉指式换能器具有单相单向换能器的单波长基本单元，其中多个具有一个波长内的三个电极指; 以及在一个波长内具有四个电极指的双向电极的多个单波长基本单元，其中所述单波长基本单元根据期望的滤波器特性适当地布置，并且每个波长的三个电极指的一个单相单向换能器的基本单元比两个其他电极指以及双向电极的每个单波长基本单元的四个电极指的宽，一对两个指与另一对两个指相交，在单相单向换能器的单波长基本单元和双向电极的单波长基本单元之间设置有调节部。

39. 发明授权

US06806619B2 Interdigital transducer, surface acoustic wave filter, and radio communication apparatus 有权
标题翻译：叉指式换能器，表面声波滤波器和无线电通信装置
公开(公告)号：US06806619B2
公开(公告)日：2004-10-19
申请号：US10271269
申请日：2002-10-15
申请人： Hiroyuki Nakamura , Ken Matsunami , Kazunori Nishimura
发明人： Hiroyuki Nakamura , Ken Matsunami , Kazunori Nishimura
IPC分类号： H01L4104
CPC分类号： H03H9/6426 , H03H9/0042 , H03H9/14505
摘要： An interdigital transducer has one-wavelength basic units of a single phase unidirectional transducer a plurality of each having three electrode fingers within one wavelength; and a plurality of one-wavelength basic units of a bidirectional electrode each having four electrode fingers within the one wavelength, wherein the one-wavelength basic units are properly arranged according to a desired filter characteristic, and one of the three electrode fingers of each one-wavelength basic unit of the single phase unidirectional transducer is wider than the two other electrode fingers, and of the four electrode fingers of each one-wavelength basic unit of the bidirectional electrode, one pair of two fingers is interdigitated to the other pair of two fingers, and an adjustment section is provided between the one-wavelength basic units of the single phase unidirectional transducer and the one-wavelength basic units of the bidirectional electrode.
摘要翻译：叉指式换能器具有单相单向换能器的单波长基本单元，其中多个具有一个波长内的三个电极指; 以及在一个波长内具有四个电极指的双向电极的多个单波长基本单元，其中所述单波长基本单元根据期望的滤波器特性适当地布置，并且每个波长的三个电极指的一个单相单向换能器的基本单元比两个其他电极指以及双向电极的每个单波长基本单元的四个电极指的宽，一对两个指与另一对两个指相交，在单相单向换能器的单波长基本单元和双向电极的单波长基本单元之间设置有调节部。

40. 发明授权

US06476691B1 Surface acoustic wave filter 有权
标题翻译：表面声波滤波器
公开(公告)号：US06476691B1
公开(公告)日：2002-11-05
申请号：US09762025
申请日：2001-04-06
申请人： Shigeru Tsuzuki , Tsutomu Igaki , Ken Matsunami , Kazunori Nishimura , Hiroyuki Nakamura , Toru Yamada
发明人： Shigeru Tsuzuki , Tsutomu Igaki , Ken Matsunami , Kazunori Nishimura , Hiroyuki Nakamura , Toru Yamada
IPC分类号： H03H964
CPC分类号： H03H9/6433 , H03H9/0076 , H03H9/02637 , H03H9/14505 , H03H9/14529 , H03H9/14538 , H03H9/14552
摘要： A SAW filter comprising a piezoelectric substrate and at least two filter tracks formed on the substrate, each having at least two IDT electrodes for input and output. The two filter tracks have substantially the same phase within a pass band, while it is substantially inverse-phased outside the pass band. For realizing the above-described conditions, input IDT electrode of one filter track is connected in parallel with input IDT electrode of the other filter track, while output IDT electrode of one filter track is connected in parallel with output IDT electrode of the other filter track. Furthermore, frequency values of said two filter tracks substantially coincide at a point 3 dB lower from the peak transfer function value. Thus the above-configured SAW filter of the present invention is smaller in the overall size and offers a broad pass band and a steep attenuation characteristic.
摘要翻译：一种SAW滤波器，包括压电衬底和形成在衬底上的至少两个滤波器轨道，每个滤波器轨道具有用于输入和输出的至少两个IDT电极。两个滤波器轨道在通带内具有基本上相同的相位，而在通带外部基本上是反相的。为了实现上述条件，一个滤波器轨道的输入IDT电极并联连接到另一滤波器轨道的输入IDT电极，而一个滤波器轨道的输出IDT电极与另一滤波器轨迹的输出IDT电极并联连接。此外，所述两个滤波器轨道的频率值基本上与从峰值传递函数值降低3dB的点相重合。因此，本发明的上述配置的SAW滤波器的总体尺寸较小，并且具有宽的通带和陡峭的衰减特性。

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