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公开(公告)号：US08698578B2
公开(公告)日：2014-04-15
申请号：US13319140
申请日：2010-05-24
CPC分类号： H03H9/6496 , H03H9/02559 , H03H9/02834 , H03H9/02858 , H03H9/02984 , H03H9/02992 , H03H9/1452 , H03H9/14526 , H03H9/1457 , H03H9/725
摘要： An acoustic wave resonator includes a piezoelectric body, an IDT electrode for exciting an acoustic wave with wavelength λ, and a dielectric thin film provided so as to cover the IDT electrode. The IDT electrode includes a bus bar electrode region, a dummy electrode region, and an IDT cross region in order from outside. The film thickness of the dielectric thin film above at least one of the bus bar electrode region and the dummy electrode region is smaller than that above the IDT cross region by 0.1λ to 0.25λ. This configuration provides an acoustic wave resonator that reduces transverse-mode spurious emission.
摘要翻译： 声波谐振器包括压电体，用于激发波长为λ的声波的IDT电极和设置成覆盖IDT电极的电介质薄膜。 IDT电极从外部依次包括汇流条电极区域，虚拟电极区域和IDT交叉区域。 汇流条电极区域和虚拟电极区域中的至少一个之上的电介质薄膜的膜厚小于IDT横截面上的0.1λ至0.25λ的厚度。 该配置提供了减少横向杂散发射的声波谐振器。
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公开(公告)号：US20120044027A1
公开(公告)日：2012-02-23
申请号：US13319140
申请日：2010-05-24
CPC分类号： H03H9/6496 , H03H9/02559 , H03H9/02834 , H03H9/02858 , H03H9/02984 , H03H9/02992 , H03H9/1452 , H03H9/14526 , H03H9/1457 , H03H9/725
摘要： An acoustic wave resonator includes a piezoelectric body, an IDT electrode for exciting an acoustic wave with wavelength λ, and a dielectric thin film provided so as to cover the IDT electrode. The IDT electrode includes a bus bar electrode region, a dummy electrode region, and an IDT cross region in order from outside. The film thickness of the dielectric thin film above at least one of the bus bar electrode region and the dummy electrode region is smaller than that above the IDT cross region by 0.1λ to 0.25λ. This configuration provides an acoustic wave resonator that reduces transverse-mode spurious emission.
摘要翻译： 声波谐振器包括压电体，用于激发波长为λ的声波的IDT电极和设置成覆盖IDT电极的电介质薄膜。 IDT电极从外部依次包括汇流条电极区域，虚拟电极区域和IDT交叉区域。 汇流条电极区域和虚拟电极区域中的至少一个之上的电介质薄膜的膜厚小于IDT横截面上的0.1λ至0.25λ的厚度。 该配置提供了减少横向杂散发射的声波谐振器。
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3.发明申请公开(公告)号：US20110006855A1
公开(公告)日：2011-01-13
申请号：US12921580
申请日：2009-03-04
申请人： Joji Fujiwara , Tetsuya Tsurunari , Hiroyuki Nakamura , Rei Goto
发明人： Joji Fujiwara , Tetsuya Tsurunari , Hiroyuki Nakamura , Rei Goto
CPC分类号： H03H9/725 , H03H9/0023 , H03H9/0038 , H03H9/0071 , H03H9/6436 , H03H9/6476 , H03H9/70
摘要： An elastic wave filter has first, second, and third IDT electrodes whose wiring electrodes are connected to unbalanced signal terminal; fourth IDT electrode disposed between the first and second IDT electrodes; fifth IDT electrode disposed between the second and third IDT electrodes; and first and second balanced signal terminals connected to the wiring electrodes of fourth and fifth IDT electrodes, respectively. The ground electrodes of the first through fifth IDT electrodes are connected to the ground. Signals in opposite phase and in phase with a signal input to unbalanced signal terminal are output from first and second balanced signal terminals, respectively. The wiring electrodes of second and third IDT electrodes are adjacent to the ground electrode of fifth IDT electrode. The wiring electrode of one of first and second IDT electrodes is adjacent to the wiring electrode of fourth IDT electrode. The ground electrode of the other is adjacent to the ground electrode of fourth IDT electrode. This configuration can suppress spuriousness in the bandpass.
摘要翻译： 弹性波滤波器具有第一，第二和第三IDT电极，其布线电极连接到不平衡信号端子; 第四IDT电极，设置在第一IDT电极和第二IDT电极之间; 设置在第二和第三IDT电极之间的第五IDT电极; 以及分别连接到第四和第五IDT电极的布线电极的第一和第二平衡信号端子。 第一至第五IDT电极的接地电极连接到地面。 分别从第一和第二平衡信号端子输出与信号输入到不平衡信号端的反相和同相的信号。 第二IDT电极和第三IDT电极的布线电极与第五IDT电极的接地电极相邻。 第一IDT电极和第二IDT电极之一的布线电极与第四IDT电极的布线电极相邻。 另一个的接地电极与第四IDT电极的接地电极相邻。 该配置可以抑制带通中的杂散。
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4.发明申请ELASTIC WAVE RESONATOR, ELASTIC WAVE FILTER, AND ANTENNA SHARING DEVICE USING THE SAME 有权弹性波共振器，弹性波滤波器，以及使用其的天线共享装置公开(公告)号：US20100194496A1
公开(公告)日：2010-08-05
申请号：US12757475
申请日：2010-04-09
CPC分类号： H03H9/6483 , H03H9/0071 , H03H9/02944 , H03H9/6496
摘要： An acoustic wave resonance device includes: piezoelectric substrate (1), first acoustic wave resonator (100) provided on an upper surface of piezoelectric substrate (1) and including first interdigital transducer electrode (110), and second acoustic wave resonator (200) provided on piezoelectric substrate (1) and including second interdigital transducer electrode (210). First acoustic wave resonator (100) and second acoustic wave resonator (200) are connected to each other. An overlap width of a plurality of first comb-shaped electrodes (112) forming first acoustic wave resonator (100) is larger than an overlap width of a plurality of second comb-shaped electrodes (212) forming second acoustic wave resonator (200). With such a configuration, frequencies in which a transverse mode spurious response is generated can be distributed and loss can be reduced.
摘要翻译： 声波共振装置包括：压电基板（1），设置在压电基板（1）的上表面上并包括第一叉指式换能器电极（110）的第一声波谐振器（100）和设置在第二声波谐振器 在压电基板（1）上并且包括第二叉指式换能器电极（210）。 第一声波谐振器（100）和第二声波谐振器（200）彼此连接。 形成第一声波谐振器（100）的多个第一梳状电极（112）的重叠宽度大于形成第二声波谐振器（200）的多个第二梳状电极（212）的重叠宽度。 通过这样的配置，可以分配产生横向模式杂散响应的频率，并且可以减少损耗。
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5.发明授权Surface acoustic wave filter device, duplexer including the same, and electronic apparatus including the same 有权表面声波滤波器装置，包括该双工器的双工器，以及包括它们的电子设备公开(公告)号：US08482363B2
公开(公告)日：2013-07-09
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
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。
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公开(公告)号：US08384495B2
公开(公告)日：2013-02-26
申请号：US12993893
申请日：2009-05-14
申请人： Joji Fujiwara , Tetsuya Tsurunari , Hiroyuki Nakamura , Rei Goto
发明人： Joji Fujiwara , Tetsuya Tsurunari , Hiroyuki Nakamura , Rei Goto
CPC分类号： H03H9/725 , H03H9/14597
摘要： An acoustic wave duplexer includes a piezoelectric substrate, a first filter and a second filter whose center frequency is higher than that of the first filter, the first and second filters being provided on the piezoelectric substrate. The first filter is structured as a ladder type. A resonator positioned nearest to an antenna terminal out of series-arm resonators is designated as a first resonator. A pitch of a comb-shaped electrode structuring the first resonator is set such that a bulk wave emission frequency of the first resonator becomes higher than a passband of the second filter.
摘要翻译： 声波双工器包括压电基板，第一滤波器和中心频率高于第一滤波器的第二滤波器，第一和第二滤波器设置在压电基板上。 第一个滤波器被构造为梯形图。 最靠近串联臂谐振器的天线端子的谐振器被指定为第一谐振器。 构成第一谐振器的梳状电极的间距被设定为使得第一谐振器的体波发射频率高于第二滤波器的通带。
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公开(公告)号：US08427259B2
公开(公告)日：2013-04-23
申请号：US12921580
申请日：2009-03-04
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： H03H9/64
CPC分类号： H03H9/725 , H03H9/0023 , H03H9/0038 , H03H9/0071 , H03H9/6436 , H03H9/6476 , H03H9/70
摘要： An elastic wave filter has first, second, and third IDT electrodes whose wiring electrodes are connected to unbalanced signal terminal; fourth IDT electrode disposed between the first and second IDT electrodes; fifth IDT electrode disposed between the second and third IDT electrodes; and first and second balanced signal terminals connected to the wiring electrodes of fourth and fifth IDT electrodes, respectively. The ground electrodes of the first through fifth IDT electrodes are connected to the ground. Signals in opposite phase and in phase with a signal input to unbalanced signal terminal are output from first and second balanced signal terminals, respectively. The wiring electrodes of second and third IDT electrodes are adjacent to the ground electrode of fifth IDT electrode. The wiring electrode of one of first and second IDT electrodes is adjacent to the wiring electrode of fourth IDT electrode. The ground electrode of the other is adjacent to the ground electrode of fourth IDT electrode. This configuration can suppress spuriousness in the bandpass.
摘要翻译： 弹性波滤波器具有第一，第二和第三IDT电极，其布线电极连接到不平衡信号端子; 第四IDT电极，设置在第一IDT电极和第二IDT电极之间; 设置在第二和第三IDT电极之间的第五IDT电极; 以及分别连接到第四和第五IDT电极的布线电极的第一和第二平衡信号端子。 第一至第五IDT电极的接地电极连接到地面。 分别从第一和第二平衡信号端子输出与信号输入到不平衡信号端的反相和同相的信号。 第二IDT电极和第三IDT电极的布线电极与第五IDT电极的接地电极相邻。 第一IDT电极和第二IDT电极之一的布线电极与第四IDT电极的布线电极相邻。 另一个的接地电极与第四IDT电极的接地电极相邻。 该配置可以抑制带通中的杂散。
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8.发明授权Elastic wave resonator, elastic wave filter, and antenna sharing device using the same 有权弹性波谐振器，弹性波滤波器和使用其的天线共享装置公开(公告)号：US08476991B2
公开(公告)日：2013-07-02
申请号：US12757475
申请日：2010-04-09
CPC分类号： H03H9/6483 , H03H9/0071 , H03H9/02944 , H03H9/6496
摘要： An acoustic wave resonance device includes: piezoelectric substrate (1), first acoustic wave resonator (100) provided on an upper surface of piezoelectric substrate (1) and including first interdigital transducer electrode (110), and second acoustic wave resonator (200) provided on piezoelectric substrate (1) and including second interdigital transducer electrode (210). First acoustic wave resonator (100) and second acoustic wave resonator (200) are connected to each other. An overlap width of a plurality of first comb-shaped electrodes (112) forming first acoustic wave resonator (100) is larger than an overlap width of a plurality of second comb-shaped electrodes (212) forming second acoustic wave resonator (200). With such a configuration, frequencies in which a transverse mode spurious response is generated can be distributed and loss can be reduced.
摘要翻译： 声波共振装置包括：压电基板（1），设置在压电基板（1）的上表面上并包括第一叉指式换能器电极（110）的第一声波谐振器（100）和设置在第二声波谐振器 在压电基板（1）上并且包括第二叉指式换能器电极（210）。 第一声波谐振器（100）和第二声波谐振器（200）彼此连接。 形成第一声波谐振器（100）的多个第一梳状电极（112）的重叠宽度大于形成第二声波谐振器（200）的多个第二梳状电极（212）的重叠宽度。 通过这样的配置，可以分配产生横向模式杂散响应的频率，并且可以减少损耗。
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公开(公告)号：US20110095845A1
公开(公告)日：2011-04-28
申请号：US12993893
申请日：2009-05-14
申请人： Joji Fujiwara , Tetsuya Tsurunari , Hiroyuki Nakamura , Rei Goto
发明人： Joji Fujiwara , Tetsuya Tsurunari , Hiroyuki Nakamura , Rei Goto
CPC分类号： H03H9/725 , H03H9/14597
摘要： An acoustic wave duplexer includes a piezoelectric substrate, a first filter and a second filter whose center frequency is higher than that of the first filter, the first and second filters being provided on the piezoelectric substrate. The first filter is structured as a ladder type. A resonator positioned nearest to an antenna terminal out of series-arm resonators is designated as a first resonator. A pitch of a comb-shaped electrode structuring the first resonator is set such that a bulk wave emission frequency of the first resonator becomes higher than a passband of the second filter.
摘要翻译： 声波双工器包括压电基板，第一滤波器和中心频率高于第一滤波器的第二滤波器，第一和第二滤波器设置在压电基板上。 第一个滤波器被构造为梯形图。 最靠近串联臂谐振器的天线端子的谐振器被指定为第一谐振器。 构成第一谐振器的梳状电极的间距被设定为使得第一谐振器的体波发射频率高于第二滤波器的通带。
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10.发明申请公开(公告)号：US20120139662A1
公开(公告)日：2012-06-07
申请号：US13390115
申请日：2010-10-29
CPC分类号： H03H9/02559 , H03H9/1452 , H03H9/64
摘要： An acoustic wave device (5) includes a piezoelectric substrate (6) made of a lithium niobate material having the Euler angles (φ, θ, ψ), an electrode (7) disposed on the piezoelectric substrate (6) for exciting a major acoustic wave of a wavelength λ, and a protective layer (8) disposed on the piezoelectric substrate (6) to cover the electrode (7). The protective layer (8) has a thickness greater than 0.27λ. The Euler angles satisfy −100°≦θ≦−60°; 1.193φ−2°≦ψ≦1.193φ+2°; and either ψ≦−2φ−3° or −2φ+3°≦ψ.
摘要翻译： 声波装置（5）包括由具有欧拉角（＆phgr;; thetas;ψ）的铌酸锂材料制成的压电基片（6），设置在压电基片（6）上的电极（7） 波长λ的主声波和设置在压电基板（6）上以覆盖电极（7）的保护层（8）。 保护层（8）的厚度大于0.27λ。 欧拉角满足-100°＆nlE;＆thetas;＆nlE; -60°; 1.193＆phgr。-2°＆nlE;ψ＆nlE; 1.193＆phgr。+ 2°; ψ＆nlE; -2＆phgr; -3°或-2＆phgr; + 3°＆nlE;ψ。
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