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1.发明授权Surface acoustic wave resonator, and surface acoustic wave filter and antenna duplexer in which the surface acoustic wave resonator is used 有权表面声波谐振器，表面声波滤波器和使用声表面波谐振器的天线双工器公开(公告)号：US07965155B2
公开(公告)日：2011-06-21
申请号：US12094324
申请日：2007-12-14
CPC分类号： H03H9/1452 , H03H9/02858 , H03H9/02881 , H03H9/02992
摘要： The present invention provides a surface acoustic wave resonator capable of improving a leak of a surface acoustic wave in the transverse direction and reducing the spurious and having superior characteristics. In a surface acoustic wave filter according to the present invention, an interdigital transducer electrode and reflector electrodes are formed on a piezoelectric substrate, and a SiO2 thin film is formed on at least a portion of the interdigital transducer electrode. The interdigital transducer electrode includes a bus-bar electrode region, a dummy electrode region and a finger overlap region, such that the SiO2 thin film is removed from upper sections of the bus-bar electrode regions of the interdigital transducer electrode.
摘要翻译： 本发明提供一种表面声波谐振器，其能够改善横向声表面波的泄漏并减少杂散并具有优异的特性。 在根据本发明的表面声波滤波器中，在压电基板上形成叉指式换能器电极和反射器电极，在交叉指型换能器电极的至少一部分上形成SiO 2薄膜。 叉指式换能器电极包括母线电极区域，虚拟电极区域和手指重叠区域，从而从指叉式换能器电极的汇流条电极区域的上部去除SiO 2薄膜。
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2.发明申请SURFACE ACOUSTIC WAVE RESONATOR, AND SURFACE ACOUSTIC WAVE FILTER AND ANTENNA DUPLEXER IN WHICH THE SURFACE ACOUSTIC WAVE RESONATOR IS USED 有权表面声波谐波器，表面声波滤波器和使用表面声波谐振器的天线双工器公开(公告)号：US20100219905A1
公开(公告)日：2010-09-02
申请号：US12094324
申请日：2007-12-14
IPC分类号： H03H9/17
CPC分类号： H03H9/1452 , H03H9/02858 , H03H9/02881 , H03H9/02992
摘要： The present invention provides a surface acoustic wave resonator capable of improving the leak of a surface acoustic wave in the transverse direction and reducing the spurious and having superior characteristics. In a surface acoustic wave filter according to the present invention, an interdigital transducer electrode and reflector electrodes are formed on a piezoelectric substrate, and a SiO2 thin film is further formed thereon. The interdigital transducer electrode includes a bus-bar electrode region, a dummy electrode region and a finger overlap region, and the SiO2 thin film is removed from upper sections of the bus-bar electrode regions in the interdigital transducer electrode.
摘要翻译： 本发明提供一种表面声波谐振器，其能够改善横向声表面波的泄漏并减少杂散并具有优异的特性。 在根据本发明的表面声波滤波器中，在压电基板上形成叉指式换能器电极和反射器电极，并且还在其上形成SiO 2薄膜。 叉指式换能器电极包括汇流条电极区域，虚拟电极区域和手指重叠区域，并且从叉指电极区域的指示电极区域的上部去除SiO 2薄膜。
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3.发明授权Surface acoustic wave filter, boundary acoustic wave filter, and antenna duplexer using same 有权表面声波滤波器，边界声波滤波器和使用其的天线双工器公开(公告)号：US07812688B2
公开(公告)日：2010-10-12
申请号：US12134854
申请日：2008-06-06
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。
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4.发明授权Surface acoustic wave filter, antenna duplexer and method for manufacturing them 有权表面声波滤波器，天线双工器及其制造方法公开(公告)号：US08072293B2
公开(公告)日：2011-12-06
申请号：US12444617
申请日：2007-11-12
CPC分类号： H03H9/6496 , H03H9/725
摘要： A surface acoustic wave filter comprised of a plurality of surface acoustic wave resonators having different resonance frequencies, the filter comprising a substrate made of lithium niobate, comb electrodes (1201 and 1202) formed on the substrate, and a thin dielectric film covering the comb electrodes (1201 and 1202), wherein the surface acoustic wave resonator having a lower resonance frequency is formed to have a metallization ratio larger than a metallization ratio of the surface acoustic wave resonator having a higher resonance frequency, thereby providing the surface acoustic wave filter and an antenna duplexer featuring superior characteristics with insignificant ripples while suppressing spurious responses of the surface acoustic wave resonators.
摘要翻译： 由具有不同谐振频率的多个表面声波谐振器构成的表面声波滤波器，该滤波器包括由铌酸锂构成的基板，形成在基板上的梳电极（1201和1202）以及覆盖梳状电极的薄电介质膜 （1201和1202），其中具有较低共振频率的表面声波谐振器形成为具有大于具有较高谐振频率的表面声波谐振器的金属化率的金属化率，从而提供表面声波滤波器和 天线双工器，具有优异的特性，无微不足道的波纹，同时抑制声表面波谐振器的杂散响应。
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5.发明申请SURFACE ACOUSTIC WAVE FILTER, ANTENNA DUPLEXER AND METHOD FOR MANUFACTURING THEM 有权表面声波滤波器，天线双工器及其制造方法公开(公告)号：US20100097161A1
公开(公告)日：2010-04-22
申请号：US12444617
申请日：2007-11-12
CPC分类号： H03H9/6496 , H03H9/725
摘要： A surface acoustic wave filter comprised of a plurality of surface acoustic wave resonators having different resonance frequencies, the filter comprising a substrate made of a lithium niobate, comb electrodes (1201 and 1202) formed on the substrate, and a thin dielectric film covering the comb electrodes (1201 and 1202), wherein the surface acoustic wave resonator having a lower resonance frequency is formed to have a metallization ratio larger than a metallization ratio of the surface acoustic wave resonator having a higher resonance frequency, thereby providing the surface acoustic wave filter and an antenna duplexer featuring superior characteristics with insignificant ripples while suppressing spurious responses of the surface acoustic wave resonators.
摘要翻译： 一种表面声波滤波器，由具有不同谐振频率的多个声表面波谐振器组成，该滤波器包括由铌酸锂构成的基板，形成在基板上的梳电极（1201和1202）和覆盖该梳子的薄电介质膜 电极（1201和1202），其中具有较低谐振频率的表面声波谐振器形成为具有大于具有较高谐振频率的表面声波谐振器的金属化率的金属化率，从而提供表面声波滤波器和 天线双工器在抑制声表面波谐振器的杂散响应的同时，具有优异的特性和不起眼的波纹。
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6.发明授权公开(公告)号：US06710683B2
公开(公告)日：2004-03-23
申请号：US10114866
申请日：2002-04-01
申请人： Hiroyuki Nakamura , Toru Yamada , Kazunori Nishimura , Tsutomu Igaki , Shigeru Tsuzuki , Ken Matsunami , Toshio Ishizaki
发明人： Hiroyuki Nakamura , Toru Yamada , Kazunori Nishimura , Tsutomu Igaki , Shigeru Tsuzuki , Ken Matsunami , Toshio Ishizaki
IPC分类号： H03H964
CPC分类号： H03H9/6426
摘要： A surface acoustic wave filter has a piezoelectric substrate and at least two interdigital transducer electrodes on the piezoelectric substrate, wherein at least one of the interdigital transducer electrodes includes a unidirectional electrode and bidirectional electrode, and the length &lgr;d of a basic cell of the unidirectional electrode is longer than the length &lgr;s of a basic cell of the bidirectional electrode.
摘要翻译： 表面声波滤波器在压电基板上具有压电基板和至少两个叉指式换能器电极，其中叉指式换能器电极中的至少一个包括单向电极和双向电极，并且单向电极的基本单元的长度lambdad为 长于双向电极的基本电池的长度lambdas。
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公开(公告)号：US07501917B2
公开(公告)日：2009-03-10
申请号：US10577141
申请日：2004-11-18
CPC分类号： H03H9/6436 , H03H9/0274 , H03H9/14588 , H03H9/6426 , H03H9/6473
摘要： A SAW filter is configured by forming a first IDT and a second IDT on a piezoelectric substrate, and the first IDT is arranged between one terminal of input/output terminals and another terminal of the input/output terminals, i.e., serially in a signal path, and the second IDT is arranged in parallel to a signal path from a portion between one terminal of the input/output terminals and the first IDT. The first IDT and the second IDT are arranged in proximity to each other and on the same propagation path of surface acoustic waves which are excited by each of the resonators.
摘要翻译： SAW滤波器通过在压电基板上形成第一IDT和第二IDT来构成，第一IDT被布置在输入/输出端子的一个端子与输入/输出端子的另一个端子之间，即串联地在信号路径 并且第二IDT与从输入/输出端子的一个端子和第一IDT之间的部分的信号路径平行布置。 第一IDT和第二IDT被布置在彼此附近并且在由每个谐振器激励的表面声波的相同传播路径上。
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公开(公告)号：US20070069837A1
公开(公告)日：2007-03-29
申请号：US10577141
申请日：2004-11-18
IPC分类号： H03H9/64
CPC分类号： H03H9/6436 , H03H9/0274 , H03H9/14588 , H03H9/6426 , H03H9/6473
摘要： It is configured by forming first IDT (202) and second IDT (203) on piezoelectric substrate (201), and first IDT (202) is arranged between one terminal (204) of input/output terminals and other terminal (205) of the input/output terminals, i.e., serially to a signal path, and second IDT (203) is arranged in parallel to a signal path from a portion between one terminal (204) of the input/output terminals and first IDT (202). First IDT (202) and second IDT (203) are arranged in proximity to each other on the same propagation path of surface acoustic waves which are excited by respective resonators.
摘要翻译： 通过在压电基板（201）上形成第一IDT（202）和第二IDT（203）来构成，并且第一IDT（202）被布置在输入/输出端子的一个端子（204）和 输入/输出端子，即串行地连接到信号路径，第二IDT（203）与来自输入/输出端子的一个端子（204）和第一IDT（202）之间的部分的信号路径平行布置。 第一IDT（202）和第二IDT（203）在由相应的谐振器激励的表面声波的相同传播路径上彼此靠近地布置。
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9.发明授权Interdigital transducer, surface acoustic wave filter, and radio communication apparatus 有权叉指式换能器，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
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。
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10.发明授权Interdigital transducer, surface acoustic wave filter, and radio communication apparatus 有权叉指式换能器，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
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。
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