专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP1883158A1 ELASTIC BOUNDARY WAVE DEVICE 审中-公开
标题翻译： ELASTISCHE GRENZWELLENVORRICHTUNG
公开(公告)号：EP1883158A1
公开(公告)日：2008-01-30
申请号：EP06732553.0
申请日：2006-05-12
申请人： MURATA MANUFACTURING CO., LTD.
发明人： KANDO, Hajime c/o MURATA MANUFACTURING CO., LTD.
IPC分类号： H03H9/145
CPC分类号： H03H9/02834 , H03H9/0222 , H03H9/02944 , H03H9/14532 , H03H9/14541
摘要： An elastic boundary wave device that can prevent an increase in the conductor resistance at higher frequency and have a small temperature coefficient of delay is provided. An elastic boundary wave device (10) includes an IDT (13) including laminated conductor layers disposed between a first medium (11) and a second medium (12), wherein a plane that halves the IDT (13) in the thickness direction is taken as an interface, the energy of an elastic boundary wave present on the side of the first medium (11) of the interface is denoted as E1, and the energy of an elastic boundary wave present on the side of the second medium (12) of the interface is denoted as E2, and wherein if the IDT (13) were composed only of a conductor having the highest density among the laminated conductor layers of the IDT (13), when the energy of an elastic boundary wave present on the side of the first medium (11) of the interface is denoted as E1' and the energy of an elastic boundary wave present on the side of the second medium (12) of the interface is denoted as E2', the energies of an elastic boundary wave would satisfy the relationship of E1/E2
摘要翻译：提供一种可以防止在较高频率下导体电阻增加且具有较小的延迟温度系数的弹性边界波装置。弹性边界波装置（10）包括设置在第一介质（11）和第二介质（12）之间的层叠导体层的IDT（13），其中在厚度方向上将IDT（13）缩小一半的平面作为界面，存在于界面的第一介质（11）侧的弹性边界波的能量表示为E1，弹性边界波的能量存在于第二介质（12）侧界面被表示为E2，并且其中如果IDT（13）仅由IDT（13）的层叠导体层中具有最高密度的导体构成，则当弹性边界波的能量存在于接口的第一介质（11）表示为E1'，存在于界面的第二介质（12）侧的弹性边界波的能量表示为E2'，弹性边界波的能量满足E1 / E2

2. 发明公开

EP1732214A1 BOUNDARY ACOUSTIC WAVE DEVICE MANUFACTURING METHOD AND BOUNDARY ACOUSTIC WAVE DEVICE 审中-公开
标题翻译： VERFAHREN ZUR HERSTELLUNG EINES GRENZAKUSTIKWELLENBAUEMENTS
公开(公告)号：EP1732214A1
公开(公告)日：2006-12-13
申请号：EP05727003.5
申请日：2005-03-24
申请人： MURATA MANUFACTURING CO., LTD.
发明人： KADOTA, Michio c/o MURATA MANUFACTURING CO., LTD. , KANDO, Hajime c/o MURATA MANUFACTURING CO., LTD.
IPC分类号： H03H3/08 , H03H9/145
CPC分类号： H03H9/0222 , H03H3/04 , Y10T29/42 , Y10T29/49005 , Y10T29/4908
摘要： A process for producing a boundary acoustic wave device having a small variation in frequency is provided. In a process for producing a boundary acoustic wave device that includes a first medium 1, a second medium 2, and a third medium 3 laminated in that order; and electrodes 5 disposed at the interface between the first medium 1 and the second medium 2, the process includes the steps of preparing a laminate including the first medium 1, the second medium 2, and the electrodes 5 disposed at the interface between the first medium 1 and the second medium 2; adjusting the thickness of the second medium 2, after the step of preparing the laminate, to regulate a frequency or the sound velocity of a surface acoustic wave, a pseudo-boundary acoustic wave, or a boundary acoustic wave; after the adjusting step, forming the third medium 3 different from the second medium 2 in terms of the sound velocity with which the boundary acoustic wave propagates therethrough and/or in terms of material.
摘要翻译：提供了一种频率变化小的弹性边界波装置的制造方法。在制造包括依次层叠的第一介质1，第二介质2和第三介质3的弹性边界波装置的方法中，以及设置在第一介质1和第二介质2之间的界面处的电极5，该方法包括制备包括第一介质1，第二介质2和布置在第一介质之间的界面处的电极5的层压体的步骤 1和第二介质2; 在制备层压体的步骤之后，调节第二介质2的厚度，以调节表面声波，伪边界声波或边界声波的频率或声速; 在调整步骤之后，根据声弹性波传播的声速和/或材料形成与第二介质2不同的第三介质3。

3. 发明公开

EP1883157A1 BOUNDARY ACOUSTIC WAVE DEVICE 审中-公开
标题翻译： AKUSTISCHES GRENZSCHICHTWELLEN-BAUELEMENT
公开(公告)号：EP1883157A1
公开(公告)日：2008-01-30
申请号：EP06732307.1
申请日：2006-04-25
申请人： MURATA MANUFACTURING CO., LTD.
发明人： KANDO, Hajime c/o MURATA MANUFACTURING CO., LTD.
IPC分类号： H03H9/145 , H03H9/25 , H03H9/64
CPC分类号： H03H9/0071 , H03H9/0222 , H03H9/02559 , H03H9/6493
摘要： An elastic boundary wave apparatus capable of suppressing an undesired response due to a comb-shaped capacitor electrode is provided. The elastic boundary wave apparatus includes a first medium; a second medium stacked on the first medium; and a plurality of electrodes arranged in the boundary between the first and second media, wherein a filter and/or a resonator, and an electrostatic capacitor that is electrically connected to the filter and/or the resonator are formed by the plurality of electrodes, the filter and/or the resonator are each formed using an IDT electrode, the electrostatic capacitor is formed by a comb-shaped capacitor electrode. When the period of the electrode fingers of the IDT is denoted as λm, the sound velocity of an elastic boundary wave in the IDT is denoted as Vm, the period of the electrode fingers of the comb-shaped capacitor electrode is denoted as λc, and the sound velocity of a transverse wave having the lower sound velocity among the sound velocities of the slower transverse waves through the first and second media in the normal direction of the electrode fingers of the comb-shaped capacitor electrode is denoted as Vc, Vm/λm
摘要翻译：提供能够抑制由梳状电容器电极引起的不希望的响应的弹性边界波装置。弹性边界波装置包括第一介质; 堆叠在第一介质上的第二介质; 以及布置在第一和第二介质之间的边界中的多个电极，其中滤波器和/或谐振器以及电连接到滤波器和/或谐振器的静电电容器由多个电极形成，滤波器和/或谐振器均使用IDT电极形成，静电电容器由梳状电容器电极形成。当IDT的电极指的周期表示为»m时，IDT中的弹性边界波的声速表示为Vm，梳形电容器电极的电极指的周期表示为»c 并且在梳状电容器电极的电极指的正方向上通过第一和第二介质的较慢的横波的声速之间具有较低声速的横波的声速被表示为Vc，Vm /»m

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式