Surface acoustic wave device
    1.
    发明申请
    Surface acoustic wave device 有权
    表面声波装置

    公开(公告)号:US20100219910A1

    公开(公告)日:2010-09-02

    申请号:US12659197

    申请日:2010-02-26

    IPC分类号: H03H9/25

    CPC分类号: H03H9/14547

    摘要: A surface acoustic wave device is disclosed. The surface acoustic wave device includes: a substrate having a plane surface; multiple first electrodes formed on the plane surface of the substrate; and multiple second electrodes formed on the plane surface of the substrate. Each of the first and second electrodes has a predetermined closed ring shape. The first and second electrodes are concentric. The second electrodes are located radially inside or radially outside of the first electrodes.

    摘要翻译: 公开了一种表面声波装置。 声表面波装置包括:具有平面的基板; 在基板的平面上形成多个第一电极; 以及形成在基板的平面上的多个第二电极。 第一和第二电极中的每一个具有预定的闭环形状。 第一和第二电极是同心的。 第二电极位于第一电极的径向内侧或径向外侧。

    SURFACE ACOUSTIC WAVE SENSOR
    2.
    发明申请
    SURFACE ACOUSTIC WAVE SENSOR 有权
    表面声波传感器

    公开(公告)号:US20130026882A1

    公开(公告)日:2013-01-31

    申请号:US13557378

    申请日:2012-07-25

    IPC分类号: H01L41/04

    摘要: In a SAW device, a first area placed at a surface of a measurement subject directly under a propagation portion is fixed to the measurement subject, and a second area placed at the surface of the measurement subject directly under both a drive electrode and a reflector is not fixed to the measurement subject. When a strain is generated in the measurement subject, a strain is generated only in the propagation portion, and a phase change is generated in a surface acoustic wave reflected by the reflector. Because the phase change is hardly affected by a temperature change, the strain of the measurement subject can be measured based on the phase change. Because a resonant frequency of the SAW device is changed by the temperature change, but is not affected by the strain of the measurement subject, a temperature can be measured based on a resonant frequency change.

    摘要翻译: 在SAW器件中,将直接位于传播部分的测量对象的表面的第一区域固定在测定对象上,在测量对象的表面直接位于驱动电极和反射体的下方的第二区域是 没有固定在测量对象上。 当在测量对象中产生应变时,仅在传播部分中产生应变,并且在由反射器反射的表面声波中产生相变。 由于相变几乎不受温度变化的影响,所以测量对象的应变可以基于相位变化来测量。 由于SAW器件的谐振频率由于温度变化而变化,而是不受测量对象的应变的影响,所以可以基于谐振频率变化来测量温度。

    Surface acoustic wave device having concentrically arranged electrodes
    3.
    发明授权
    Surface acoustic wave device having concentrically arranged electrodes 有权
    表面声波装置具有同心布置的电极

    公开(公告)号:US08330557B2

    公开(公告)日:2012-12-11

    申请号:US12659197

    申请日:2010-02-26

    IPC分类号: H03H9/145 H03H9/25 H03H9/64

    CPC分类号: H03H9/14547

    摘要: A surface acoustic wave device is disclosed. The surface acoustic wave device includes: a substrate having a plane surface; multiple first electrodes formed on the plane surface of the substrate; and multiple second electrodes formed on the plane surface of the substrate. Each of the first and second electrodes has a predetermined closed ring shape. The first and second electrodes are concentric. The second electrodes are located radially inside or radially outside of the first electrodes.

    摘要翻译: 公开了一种表面声波装置。 声表面波装置包括:具有平面的基板; 在基板的平面上形成多个第一电极; 以及形成在基板的平面上的多个第二电极。 第一和第二电极中的每一个具有预定的闭环形状。 第一和第二电极是同心的。 第二电极位于第一电极的径向内侧或径向外侧。

    Surface acoustic wave sensor
    4.
    发明授权
    Surface acoustic wave sensor 有权
    表面声波传感器

    公开(公告)号:US08841817B2

    公开(公告)日:2014-09-23

    申请号:US13557378

    申请日:2012-07-25

    摘要: In a SAW device, a first area placed at a surface of a measurement subject directly under a propagation portion is fixed to the measurement subject, and a second area placed at the surface of the measurement subject directly under both a drive electrode and a reflector is not fixed to the measurement subject. When a strain is generated in the measurement subject, a strain is generated only in the propagation portion, and a phase change is generated in a surface acoustic wave reflected by the reflector. Because the phase change is hardly affected by a temperature change, the strain of the measurement subject can be measured based on the phase change. Because a resonant frequency of the SAW device is changed by the temperature change, but is not affected by the strain of the measurement subject, a temperature can be measured based on a resonant frequency change.

    摘要翻译: 在SAW器件中,将直接位于传播部分的测量对象的表面的第一区域固定在测定对象上,在测量对象的表面直接位于驱动电极和反射体的下方的第二区域是 没有固定在测量对象上。 当在测量对象中产生应变时,仅在传播部分中产生应变,并且在由反射器反射的表面声波中产生相变。 由于相变几乎不受温度变化的影响,所以测量对象的应变可以基于相位变化来测量。 由于SAW器件的谐振频率由于温度变化而变化,而是不受测量对象的应变的影响,所以可以基于谐振频率变化来测量温度。

    Capacitance type acceleration sensor
    8.
    发明授权
    Capacitance type acceleration sensor 有权
    电容式加速度传感器

    公开(公告)号:US07107846B2

    公开(公告)日:2006-09-19

    申请号:US11265281

    申请日:2005-11-03

    IPC分类号: G01P15/125

    摘要: A capacitance type acceleration sensor includes a semiconductor substrate, a weight portion supported with the substrate through a spring portion, a movable electrode integrated with the weight portion, and a fixed electrode cantilevered with the substrate. The movable electrode is displaced along with a facing surface of the movable electrode in accordance with acceleration. The facing surface of the movable electrode faces a facing surface of the fixed electrode so as to provide a capacitor. The capacitance of the capacitor changes in accordance with a displacement of the movable electrode so that an outer circuit detects the acceleration as a capacitance change. Each facing surface of the movable and fixed electrodes has a concavity and convexity portion for increasing the capacitance change.

    摘要翻译: 电容型加速度传感器包括半导体基板,通过弹簧部分支撑在基板上的重量部分,与重物部分一体化的可动电极以及与该基板悬臂连接的固定电极。 根据加速度,可移动电极与可动电极的相对表面一起移动。 可动电极的相对表面面对固定电极的相对表面,以提供电容器。 电容器的电容根据可动电极的位移而变化,使得外部电路作为电容变化来检测加速度。 可移动和固定电极的每个相对表面具有用于增加电容变化的凹凸部分。

    Capacitance type acceleration sensor

    公开(公告)号:US07004026B2

    公开(公告)日:2006-02-28

    申请号:US10703461

    申请日:2003-11-10

    IPC分类号: G01P15/125

    摘要: A capacitance type acceleration sensor includes a semiconductor substrate, a weight portion supported with the substrate through a spring portion, a movable electrode integrated with the weight portion, and a fixed electrode cantilevered with the substrate. The movable electrode is displaced along with a facing surface of the movable electrode in accordance with acceleration. The facing surface of the movable electrode faces a facing surface of the fixed electrode so as to provide a capacitor. The capacitance of the capacitor changes in accordance with a displacement of the movable electrode so that an outer circuit detects the acceleration as a capacitance change. Each facing surface of the movable and fixed electrodes has a concavity and convexity portion for increasing the capacitance change.