公开(公告)号：US20140368401A1

公开(公告)日：2014-12-18

申请号：US14475724

申请日：2014-09-03

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takashi MIYAKE ,  Koji NOSAKA ,  Ryo NAKAGAWA ,  Haruki KYOUYA

IPC: H01Q1/50 ,  H03H9/70 ,  H04L5/14 ,  H03H9/72

CPC classification number: H03H9/725 ,  H01Q1/50 ,  H03H9/0038 ,  H03H9/14576 ,  H03H9/542 ,  H03H9/703 ,  H03H9/706 ,  H03H9/72 ,  H04B1/50 ,  H04B1/525 ,  H04L5/14

Abstract: A communication device is provided with a band elimination filter that has one end connected to an antenna terminal, and a first multiplexer that is connected to the other end of the band elimination filter. The band elimination filter is configured to eliminate signals of a frequency band that is different from the frequencies of signals transmitted and received in the first multiplexer, and is configured from a filter circuit that includes a bulk wave element.

Abstract translation: 通信装置设置有一端连接到天线端子的带除滤波器，以及与带除滤波器的另一端连接的第一多路复用器。 带除滤波器被配置为消除与第一多路复用器中发送和接收的信号的频率不同的频带的信号，并且由包括体波元件的滤波器电路配置。

公开(公告)号：US20130127300A1

公开(公告)日：2013-05-23

申请号：US13677347

申请日：2012-11-15

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Keiichi UMEDA ,  Takashi MIYAKE

IPC: H01L41/18

CPC classification number: H01L41/18 ,  H01L41/187 ,  H01L41/316 ,  H03H3/04 ,  H03H9/02015 ,  H03H9/02157 ,  H03H9/173 ,  H03H9/175 ,  H03H2003/021 ,  H03H2003/025

Abstract: A piezoelectric thin-film resonator includes a piezoelectric thin film which includes aluminum nitride containing Sc and which has a concentration distribution such that the concentration of Sc is non-uniform in a thickness direction of the piezoelectric thin film; a first electrode; a second electrode facing the first electrode across the piezoelectric thin film; and a substrate supporting a piezoelectric vibrating section defined by the piezoelectric thin film and the first and second electrodes.

Abstract translation: 压电薄膜谐振器包括压电薄膜，其包括含有氮化铝的Sc，并且其浓度分布使得Sc的浓度在压电薄膜的厚度方向上不均匀; 第一电极; 面对跨越压电薄膜的第一电极的第二电极; 以及支撑由压电薄膜和第一和第二电极限定的压电振动部分的基板。

公开(公告)号：US20130057113A1

公开(公告)日：2013-03-07

申请号：US13665973

申请日：2012-11-01

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takashi MIYAKE

IPC: H01L41/053

CPC classification number: H03H9/02842 ,  H03H9/02614 ,  H03H9/02866

Abstract: In an elastic wave device that significantly reduces and prevents deterioration of a frequency characteristic without roughening an undersurface of a piezoelectric substrate, a structure is bonded to a surface of a piezoelectric substrate other than a main surface of the piezoelectric substrate on which IDTs are located. The structure is provided so that a path difference is defined between a first component and a second component of a bulk wave that is excited by the IDT and propagates in the piezoelectric substrate toward the bonding surface. The first component of the bulk wave is reflected from the bonding surface. The second component of the bulk wave enters the structure from the bonding surface, propagates in the structure, enters the piezoelectric substrate from the bonding surface, and propagates in the same direction as that of the first component reflected from the bonding surface in the piezoelectric substrate.

Abstract translation: 在不使粗糙化压电基板的下表面的情况下显着地降低并防止频率特性劣化的弹性波装置中，结构被粘结到压电基板的除了IDT所在的压电基板的主表面以外的表面。 提供这样的结构，使得在由IDT激励的体波的第一分量和第二分量之间限定路径差异，并且在压电基板中朝向接合表面传播。 体波的第一个分量从接合表面反射出来。 体波的第二分量从接合表面进入结构，在结构中传播，从接合表面进入压电基片，并沿与压电基片中的接合表面反射的第一分量的方向相同的方向传播 。

公开(公告)号：US20150155850A1

公开(公告)日：2015-06-04

申请号：US14615503

申请日：2015-02-06

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takuma KUZUSHITA ,  Yasumasa TANIGUCHI ,  Takashi MIYAKE

IPC: H03H9/24

CPC classification number: H03H9/0576 ,  H03H7/463 ,  H03H9/0566 ,  H03H9/24 ,  H03H9/25 ,  H03H9/542 ,  H03H9/568 ,  H03H9/605 ,  H03H9/6483 ,  H03H9/706 ,  H03H9/725 ,  H03H2001/0085

Abstract: In an elastic wave filter device, an elastic wave filter element chip is mounted on a board. In the elastic wave filter element chip, a ladder filter including a plurality of series arm resonators and a plurality of parallel arm resonators are provided. In/on the board, a first inductor connected in parallel to the series arm resonator and a second inductor connected between the parallel arm resonators P1-P3 and a ground potential are provided. In/on the board, a shield electrode is located between the first inductor and the second inductor.

Abstract translation: 在弹性波滤波器装置中，弹性波滤波器元件芯片安装在板上。 在弹性波滤波器元件芯片中，设置有包括多个串联臂谐振器和多个并联臂谐振器的梯形滤波器。 在板上，提供与串联臂谐振器并联连接的第一电感器和连接在并联臂谐振器P1-P3和接地电位之间的第二电感器。 在板上，屏蔽电极位于第一电感器和第二电感器之间。

公开(公告)号：US20150017320A1

公开(公告)日：2015-01-15

申请号：US14492210

申请日：2014-09-22

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takashi MIYAKE

IPC: H04R31/00

CPC classification number: H04R31/00 ,  H01L41/083 ,  H01L41/27 ,  H03H3/02 ,  H03H3/04 ,  H03H9/584 ,  H03H9/588 ,  H03H9/589 ,  H03H2003/023 ,  H03H2003/025 ,  H03H2003/0421 ,  H03H2003/0428 ,  H03H2003/0435 ,  H03H2003/0442 ,  H04R2231/00 ,  Y10T29/42 ,  Y10T29/49004 ,  Y10T29/49005 ,  Y10T29/49147 ,  Y10T29/49155

Abstract: A method of manufacturing a stacked thin film piezoelectric filter includes the steps of forming a lower thin film piezoelectric resonator on a substrate, measuring a frequency of the lower thin film piezoelectric resonator and adjusting the frequency, forming an acoustic coupling layer on the lower thin film piezoelectric resonator whose frequency has been adjusted, forming the stacked thin film piezoelectric filter by forming an upper thin film piezoelectric resonator on the acoustic coupling layer, and measuring a frequency of the upper thin film piezoelectric resonator and adjusting the frequency.

Abstract translation: 层叠薄膜压电滤波器的制造方法包括以下步骤：在基板上形成下薄膜压电谐振器，测量下薄膜压电谐振器的频率并调节频率，在下薄膜上形成声耦合层 调节频率的压电谐振器，通过在声耦合层上形成上部薄膜压电谐振器，测量上部薄膜压电谐振器的频率并调整频率，形成叠层薄膜压电滤波器。