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    • 72. 发明申请
    • ACOUSTIC WAVE FILTER
    • 声波滤波器
    • US20120105298A1
    • 2012-05-03
    • US13344274
    • 2012-01-05
    • Kazunori InoueTakashi MatsudaMichio Miura
    • Kazunori InoueTakashi MatsudaMichio Miura
    • H03H9/64H01Q1/50H03H9/72
    • H03H9/02992H03H9/02952H03H9/6483H03H9/725
    • A configuration that reduces a parasitic capacitance between wires is achieved at a low cost. Disclosed is an acoustic wave filter provided with a piezoelectric substrate 1, resonators 2a and 2b that include a comb-shaped electrode formed on the piezoelectric substrate 1, a wiring portion 3 that is connected to the comb-shaped electrode, and a dielectric layer 4 formed to cover the comb-shaped electrode. The wiring portion 3 is provided with a lower layer wiring portion 3d that is disposed in the same layer as the comb-shaped electrode and an upper layer wiring portion 3e that is disposed on the lower layer wiring portion 3d. The upper layer wiring portion 3e includes a region that has a wider electrode width than the electrode width of the lower layer wiring portion 3d.
    • 以低成本实现降低电线之间的寄生电容的结构。 公开了一种设置有压电基板1的谐波滤波器,包括形成在压电基板1上的梳状电极的谐振器2a和2b,连接到梳状电极的布线部分3和介电层4 形成为覆盖梳状电极。 布线部分3设置有与梳状电极相同的层中的下层布线部分3d和布置在下层布线部分3d上的上层布线部分3e。 上层布线部分3e包括具有比下层布线部分3d的电极宽度更宽的电极宽度的区域。
    • 73. 发明申请
    • BOUNDARY ACOUSTIC WAVE DEVICE AND COMMUNICATION EQUIPMENT
    • 边界声波设备和通信设备
    • US20110204994A1
    • 2011-08-25
    • US12711965
    • 2010-02-24
    • Satoru MatsudaMichio MiuraTakashi Matsuda
    • Satoru MatsudaMichio MiuraTakashi Matsuda
    • H03H9/72H01L41/04H03H9/64
    • H03H9/02834H03H9/0222H03H9/02653
    • A boundary acoustic waves device includes a piezoelectric substrate (16) having piezoelectricity, interdigitated electrodes (14a, 14b) formed on the piezoelectric substrate, a first medium (17) formed on the piezoelectric substrate so as to cover the interdigitated electrode, and a second medium (18) formed on the first medium. The interdigitated electrodes include a plurality of electrode fingers (13a, 13b) and bus bars (12a, 12b) that connect ends of the plurality of electrode fingers. A third medium (19a) is formed on the first medium. The second medium and the third medium are in contact with the first medium. The first medium, the second medium, and the third medium are formed of different materials. The first medium, the second medium, and the third medium are different in a ratio in length of a part with the third medium formed with respect to a length of a propagation path of boundary acoustic waves in a cross-section perpendicular to a longitudinal direction of the electrode fingers, in the longitudinal direction of the electrode fingers.
    • 声界面波装置包括具有压电性的压电基板(16),形成在压电基板上的交错电极(14a,14b),形成在压电基板上以覆盖交叉指状电极的第一介质(17) 介质(18)形成在第一介质上。 交叉电极包括连接多个电极指的端部的多个电极指(13a,13b)和母线(12a,12b)。 在第一介质上形成第三介质(19a)。 第二介质和第三介质与第一介质接触。 第一介质,第二介质和第三介质由不同的材料形成。 第一介质,第二介质和第三介质在与纵向方向垂直的截面中相对于边界声波的传播路径的长度形成的部分的长度的比例不同 的电极指的长度方向。
    • 76. 发明授权
    • Filter, demultiplexer, and module including demultiplexer, communication apparatus
    • 滤波器,解复用器和模块,包括解复用器,通信设备
    • US08228137B2
    • 2012-07-24
    • US12709182
    • 2010-02-19
    • Shogo InoueJun TsutsumiTakashi MatsudaMasanori Ueda
    • Shogo InoueJun TsutsumiTakashi MatsudaMasanori Ueda
    • H03H7/46H04B1/48H03H9/52H03H9/70
    • H03H9/0576H03H9/725
    • A demultiplexer has a common terminal, a transmission terminal, and a reception terminal, and furthermore includes a transmission filter connected between the common terminal and the transmission terminal, a reception filter connected between the common terminal and the reception terminal, and a phase shift circuit connected in series to the reception filter connected between the common terminal and the reception terminal. A node on the line from the phase shift circuit to the common terminal or the transmission terminal, and a node on the line from the phase shift circuit to the reception terminal are coupled via a reactance. Accordingly, it is possible to fundamentally reduce or eliminate the situation in which transmission signals from the transmission filter arrive at the reception circuit, and improve isolation.
    • 解复用器具有公共端子,发送端子和接收端子,并且还包括连接在公共端子和发送端子之间的发送滤波器,连接在公共端子和接收端子之间的接收滤波器以及相移电路 与连接在公共端子和接收端子之间的接收滤波器串联连接。 从相移电路到共用端子或发送端子的线路上的节点,以及从相移电路到接收端子的线路上的节点经由电抗耦合。 因此,可以从根本上减少或消除来自发送滤波器的发送信号到达接收电路并且改善隔离的情况。
    • 79. 发明授权
    • Duplexer with a ladder filter and a multimode filter on the same substrate
    • 带有梯形滤波器的双工器和同一基板上的多模滤波器
    • US07026890B2
    • 2006-04-11
    • US10830023
    • 2004-04-23
    • Jun TsutsumiShogo InoueTakashi MatsudaMasanori Ueda
    • Jun TsutsumiShogo InoueTakashi MatsudaMasanori Ueda
    • H03H9/72H03H9/64
    • H03H9/0576H03H3/08H03H9/0038H03H9/6483H03H9/72H03H9/725
    • A duplexer includes a ladder filter and a multimode filter that are formed on the same surface of a predetermined substrate. In this duplexer, a first comb-like electrode of the ladder filter and a second comb-like electrode of the multimode filter have the same layer structure with the same film thickness. The first comb-like electrode and the second comb-like electrode are formed with single-layer films mainly containing aluminum. The relationship among the film thickness h of the first comb-like electrode and the second comb-like electrode, the center frequency f1 of the frequency band of the ladder filter, and the center frequency f2 of the frequency band of the multimode filter, is expressed as: 300≦h×f1≦480 300≦h×f2≦430.
    • 双工器包括形成在预定基板的相同表面上的梯形滤波器和多模式滤波器。 在该双工器中,梯形滤波器的第一梳状电极和多模滤波器的第二梳状电极具有相同的膜厚度的相同的层结构。 第一梳状电极和第二梳状电极由主要含有铝的单层膜形成。 第一梳状电极和第二梳状电极的膜厚h与梯形滤波器的频带的中心频率f 1 1和中心频率f 2 表示为:<?in-line-formula description =“In-line Formulas”end =“lead”?> 300 <= hxf <1> / SUB> <= 480 <?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In-line Formulas”end =“lead”?> 300 <= hxf <= 430。<?in-line-formula description =“In-line Formulas”end =“tail”?>