-
公开(公告)号：US09083314B2
公开(公告)日：2015-07-14
申请号：US13509641
申请日：2010-11-10
CPC分类号： H03H9/725
摘要： An elastic wave filter device includes a longitudinally coupled resonator-type elastic wave filter formed on a piezoelectric substrate; and a ladder-type elastic wave filter connected to the resonator-type elastic wave filter. The resonator-type filter includes an input IDT and an output IDT. The ladder-type filter includes a series arm resonator and a parallel arm resonator. A first ground electrode connected to the parallel arm resonator is electrically separated from a second ground electrode connected to at least one of the input IDT and the output IDT.
摘要翻译： 弹性波滤波器装置包括形成在压电基片上的纵向耦合的谐振器型弹性波滤波器; 连接到谐振器型弹性波滤波器的梯形弹性波滤波器。 谐振器型滤波器包括输入IDT和输出IDT。 梯型滤波器包括串联臂谐振器和并联臂谐振器。 连接到并联臂谐振器的第一接地电极与连接到输入IDT和输出IDT中的至少一个的第二接地电极电隔离。
-
公开(公告)号：US08531252B2
公开(公告)日：2013-09-10
申请号：US12668699
申请日：2008-07-08
CPC分类号： H04B1/0057
摘要： A small antenna duplexer that includes antenna terminal, first filter electrically connected to this antenna terminal and passing a first frequency band, second filter electrically connected to antenna terminal and passing a second frequency band, and third filter electrically connected to antenna terminal and passing a third frequency band. First filter and third filter are used for one band, and second filter and third filter are used for another band.
摘要翻译： 一种小型天线双工器，包括天线端子，第一滤波器电连接到该天线端子并通过第一频带，第二滤波器电连接到天线端子并通过第二频带，以及第三滤波器，电连接到天线端子并通过第三 频带。 第一滤波器和第三滤波器用于一个频带，第二滤波器和第三滤波器用于另一频带。
-
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。
-
公开(公告)号：US20120062337A1
公开(公告)日：2012-03-15
申请号：US13319578
申请日：2010-05-10
申请人： Tetsuya Tsurunari , Rei Goto , Hiroyuki Nakamura
发明人： Tetsuya Tsurunari , Rei Goto , Hiroyuki Nakamura
IPC分类号： H03H9/70
CPC分类号： H03H9/725 , H03H9/0071
摘要： The antenna sharing device has a first elastic-wave filter for passing signals of a first frequency passband and a second elastic-wave filter for passing signals of a second frequency passband higher than the first frequency passband. The first elastic-wave filter is a ladder-type filter including a first series resonator and a second series resonator having an antiresonant frequency point higher than that of the first series resonator. The first series resonator has a first IDT electrode and a first dielectric film covering the electrode. The second series resonator has a second IDT electrode and a second dielectric film covering the electrode. The first and the second dielectric films have a first projection and a second projection, respectively, so as to be formed above the electrode fingers of each IDT electrode. The cross-sectional area of the first projection of the first series resonator is larger than that of the second projection of the second series resonator in the excitation direction of the elastic wave. The structure satisfies both of steepness in a crossband and low loss in a passband.
摘要翻译： 天线共用装置具有用于通过第一频带和第二弹性波滤波器的信号的第一弹性波滤波器，用于通过高于第一频带的第二频带的信号。 第一弹性波滤波器是包括第一串联谐振器和具有比第一串联谐振器的反谐振频率点高的反谐振频率点的第二串联谐振器的梯型滤波器。 第一串联谐振器具有第一IDT电极和覆盖电极的第一电介质膜。 第二串联谐振器具有覆盖电极的第二IDT电极和第二电介质膜。 第一和第二电介质膜分别具有第一突起和第二突起，以形成在每个IDT电极的电极指的上方。 第一串联谐振器的第一突起的横截面积大于弹性波的激励方向上的第二串联谐振器的第二突起的截面面积。 该结构满足通带中的陡度和通带中的低损耗。
-
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。
-
公开(公告)号：US20100188165A1
公开(公告)日：2010-07-29
申请号：US12668699
申请日：2008-07-08
CPC分类号： H04B1/0057
摘要： A small antenna duplexer that includes antenna terminal, first filter electrically connected to this antenna terminal and passing a first frequency band, second filter electrically connected to antenna terminal and passing a second frequency band, and third filter electrically connected to antenna terminal and passing a third frequency band. First filter and third filter are used for one band, and second filter and third filter are used for another band.
摘要翻译： 一种小型天线双工器，包括天线端子，第一滤波器电连接到该天线端子并通过第一频带，第二滤波器电连接到天线端子并通过第二频带，以及第三滤波器，电连接到天线端子并通过第三 频带。 第一滤波器和第三滤波器用于一个频带，第二滤波器和第三滤波器用于另一频带。
-
公开(公告)号：US07733196B2
公开(公告)日：2010-06-08
申请号：US11911845
申请日：2006-04-20
申请人： Tetsuya Tsurunari , Katsuya Fujii
发明人： Tetsuya Tsurunari , Katsuya Fujii
IPC分类号： H03H9/72
CPC分类号： H03H9/725 , H03H9/0576 , H03H9/72
摘要： An antenna duplexer includes a piezoelectric substrate having a surface, a grounding terminal to be grounded, first and second surface acoustic wave (SAW) filters mounted on the piezoelectric substrate, first and second terminals connected to the first and second SAW filters, respectively, and a line mounted on the surface of the piezoelectric substrate between the first SAW filter and the second SAW filter. A stray coupling path is produced between the first and second terminals. A first end of the line is connected to the grounding terminal. A second end of the line opens and is coupled capacitively to the stray coupling path. The antenna duplexer has a large isolation characteristic between the surface acoustic wave filters.
摘要翻译： 一种天线双工器包括具有表面的压电基片，待接地的接地端子，安装在压电基片上的第一和第二声表面波（SAW）滤波器，分别连接到第一和第二SAW滤波器的第一和第二端子，以及 安装在第一SAW滤波器和第二SAW滤波器之间的压电基板的表面上的线。 在第一和第二端子之间产生杂散耦合路径。 线路的第一端连接到接地端子。 线的第二端打开并且电容耦合到杂散耦合路径。 天线双工器在表面声波滤波器之间具有很大的隔离特性。
-
28.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。
-
29.发明授权公开(公告)号：US09425766B2
公开(公告)日：2016-08-23
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 includes a piezoelectric substrate made of a lithium niobate material having the Euler angles (φ, θ, ψ), an electrode disposed on the piezoelectric substrate for exciting a major acoustic wave of a wavelength λ, and a protective layer disposed on the piezoelectric substrate to cover the electrode. The protective layer 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： 声波装置包括由具有欧拉角（φ，θ，ψ）的铌酸锂材料制成的压电基板，设置在压电基板上用于激发波长λ的主要声波的电极，以及设置在 压电基片覆盖电极。 保护层的厚度大于0.27λ。 欧拉角满足-100°≤θ≤-60°; 1.193φ-2°≤ψ≤1.193φ+ 2°; ψ≤-2φ-3°或-2φ+ 3°≤ψ。
-
公开(公告)号：US09118302B2
公开(公告)日：2015-08-25
申请号：US14237168
申请日：2012-08-07
摘要： In a filter module capable of handling multiple bands, cross wiring with an RF-IC is to be solved. The filter module includes: an antenna terminal; first and second transmission filters; first and second reception filters; a first switch circuit connected to the antenna terminal, and selectively connected to the first and second transmission filters; a second switch circuit connected to the antenna terminal, and selectively connected to the first and second reception filters; a first matching circuit connected between the first switch circuit and the first transmission filter or between the second switch circuit and the first reception filter; and a second matching circuit connected between the first switch circuit and the second transmission filter or between the second switch circuit and the second reception filter.
摘要翻译： 在能够处理多个频带的滤波器模块中，要解决与RF-IC的交叉布线。 滤波器模块包括：天线端子; 第一和第二传输滤波器; 第一和第二接收滤波器; 连接到所述天线端子的第一开关电路，并且选择性地连接到所述第一和第二传输滤波器; 连接到天线端子的第二开关电路，并且选择性地连接到第一和第二接收滤波器; 连接在第一开关电路和第一发送滤波器之间或第二开关电路和第一接收滤波器之间的第一匹配电路; 以及连接在第一开关电路和第二发送滤波器之间或第二开关电路和第二接收滤波器之间的第二匹配电路。
-
-
-
-
-
-
-
-
-
搜索结果
52 条记录 (耗时 0.023 秒)
