Reactance Filter Having a Steep Edge
    1.
    发明申请
    Reactance Filter Having a Steep Edge 有权
    具有陡峭边缘的电抗滤波器

    公开(公告)号:US20110316649A1

    公开(公告)日:2011-12-29

    申请号:US13254383

    申请日:2010-03-02

    IPC分类号: H03H9/70 H03H9/58

    摘要: A reactance filter includes a series branch that connects a signal input to a signal output. At least one parallel branch branches off from the series branch with respect to ground. A parallel resonator is arranged in each parallel branch. Two or more series resonators are connected in series in the series branch. A capacitor is connected in parallel with one of the series resonators in the series branch.

    摘要翻译: 电抗滤波器包括将信号输入连接到信号输出的串联分支。 至少一个平行的分支相对于地面从串联分支分支。 并联谐振器布置在每个并行分支中。 两个或多个串联谐振器串联在串联分支中。 电容器与串联分支中的串联谐振器中的一个并联连接。

    Method for detecting living human skin
    5.
    发明授权
    Method for detecting living human skin 失效
    检测人体皮肤的方法

    公开(公告)号:US06597945B2

    公开(公告)日:2003-07-22

    申请号:US09757329

    申请日:2001-01-09

    IPC分类号: A61B505

    摘要: A characteristic curve of the impedance of a skin surface is measured as a function of the frequency of an electric AC voltage by applying the voltage to at least one electric conductor which is galvanically or capacitively coupled to the skin surface. The characteristic curve is compared with a reference characteristic curve, which has been generated previously. If the characteristic curve substantially corresponds to the reference characteristic curve, the skin surface is recognized as belonging to living tissue.

    摘要翻译: 通过将电压施加到电泳或电容耦合到皮肤表面的至少一个电导体,测量皮肤表面的阻抗的特性曲线作为电AC电压的频率的函数。 将特性曲线与先前已经生成的参考特性曲线进行比较。 如果特征曲线基本上对应于参考特性曲线,则将皮肤表面识别为属于活组织。

    Antenna matching circuit
    6.
    发明授权
    Antenna matching circuit 有权
    天线匹配电路

    公开(公告)号:US09214920B2

    公开(公告)日:2015-12-15

    申请号:US13024943

    申请日:2011-02-10

    摘要: An antenna matching circuit includes at least two signal paths are connected to one antenna connection. The signal paths are designed to transmit and/or receive RF signals. A matching circuit includes a discrete line for phase shifting integrated at the antenna end in at least one of the signal paths. In this case, at least one of the capacitances contained in the discrete line is in the form of a micro-acoustic resonator, whose resonance is shifted sufficiently far that it is outside the pass band of the respective signal paths.

    摘要翻译: 天线匹配电路包括至少两个信号路径连接到一个天线连接。 信号路径被设计为发送和/或接收RF信号。 匹配电路包括在至少一个信号路径中在天线端集成的用于相移的离散线。 在这种情况下,包含在离散线中的电容中的至少一个是微谐振器的形式,其微振荡器的谐振被移动得足够远,使其在各个信号路径的通带之外。

    Method of manufacturing an acoustic mirror for a piezoelectric resonator
    7.
    发明授权
    Method of manufacturing an acoustic mirror for a piezoelectric resonator 失效
    制造用于压电谐振器的声反射镜的方法

    公开(公告)号:US08091190B2

    公开(公告)日:2012-01-10

    申请号:US12711484

    申请日:2010-02-24

    IPC分类号: H01L41/22 H01L41/00 H03L9/00

    摘要: A mirror for a piezoelectric resonator consisting of alternately arranged layers of high and low acoustic impedance is manufactured by at first producing a first layer on which a second layer is produced, so that the second layer partially covers the first layer. Then, a planarization layer is applied on the first layer and on the second layer. Subsequently, a portion of the second layer is exposed by structuring the planarization layer, wherein the portion is associated with an active region of the piezoelectric resonator. Finally, the resulting structure is planarized by removing the portions of the planarization layer remaining outside the portion.

    摘要翻译: 通过首先制造其上制造第二层的第一层,制造由交替布置的高和低声阻抗层组成的压电谐振器的反射镜,使得第二层部分地覆盖第一层。 然后,在第一层和第二层上施加平坦化层。 随后,通过构造平坦化层来暴露第二层的一部分,其中该部分与压电谐振器的有源区相关。 最后,通过去除残留在该部分外部的平坦化层的部分,将所得到的结构平坦化。

    Bulk acoustic wave filter and method for eliminating unwanted side passbands
    8.
    发明授权
    Bulk acoustic wave filter and method for eliminating unwanted side passbands 有权
    体声波滤波器和消除不需要的侧通带的方法

    公开(公告)号:US07439824B2

    公开(公告)日:2008-10-21

    申请号:US11069715

    申请日:2005-03-01

    IPC分类号: H03H9/00 H03H9/56 H03H9/205

    CPC分类号: H03H9/564 H03H9/02118

    摘要: A bulk acoustic wave (BAW) filter (40) is fabricated from thin film bulk acoustic wave resonators and a method eliminates unwanted side passbands. This BAW filter comprises a substrate (14) a resonator section (11) and an acoustic mirror section (12). Further it comprises a detuning component (31) positioned in the resonator section (11) to provide precise passband characteristics and an additional detuning component (41) in the acoustic mirror section (12) to suppress unwanted side-passband characteristics.

    摘要翻译: 由薄膜体声波谐振器制造体声波(BAW)滤波器(40),并且消除不需要的侧通带的方法。 该BAW滤波器包括基片(14),谐振器部分(11)和声镜部分(12)。 此外,它包括位于谐振器部分(11)中以提供精确通带特性的失谐部件(31)和在声镜部分(12)中的附加失谐部件(41),以抑制不需要的侧通带特性。

    Method of producing a piezoelectric component
    9.
    发明授权
    Method of producing a piezoelectric component 有权
    制造压电元件的方法

    公开(公告)号:US07310861B2

    公开(公告)日:2007-12-25

    申请号:US10808949

    申请日:2004-03-25

    IPC分类号: H04R17/00

    摘要: A method for producing a piezoelectric component comprising at least two stacked crystal filters comprises the steps of depositing of the layer stack above the bottom electrode and the subsequent patterning of the upper electrically conductive layer and, if appropriate, second piezoelectric layers. Thus, it is possible, in a simple manner, with a minimum of process steps, to produce a piezoelectric component comprising two stacked crystal filters which are directly connected to one another via their bottom and central electrodes. The piezoelectric component furthermore has the advantage that applications in which a high stop band attenuation is important can be realized with a relatively small number of filter stages. In this case, through the use of at least two stacked crystal filters, it is possible to achieve an excellent out-of-band rejection also for “single-ended signals”.

    摘要翻译: 一种用于制造包括至少两个层叠晶体滤波器的压电元件的方法包括以下步骤:在底部电极上沉​​积层叠层,并且随后对上部导电层进行图案化,以及如果合适的话,沉积第二压电层。 因此,以简单的方式,通过最小的工艺步骤可以产生包括通过其底部和中心电极彼此直接连接的两个堆叠的晶体滤波器的压电元件。 压电元件还具有这样的优点,其中高阻带衰减重要的应用可以用相对较少数量的滤波级来实现。 在这种情况下,通过使用至少两个堆叠的晶体滤波器,也可以实现“单端信号”的优异的带外抑制。

    BAW resonator
    10.
    发明申请
    BAW resonator 失效
    BAW谐振器

    公开(公告)号:US20060170519A1

    公开(公告)日:2006-08-03

    申请号:US11068522

    申请日:2005-02-28

    IPC分类号: H03H9/54

    CPC分类号: H03H9/0211 H03H9/175

    摘要: A BAW resonator includes a resonator region having a piezo-electric layer between two excitation electrodes, wherein an acoustic standing wave forms when operating the BAW resonator at a resonant frequency. Furthermore, the BAW resonator includes a leaky wave reflection structure formed to reflect leaky waves generated when operating the BAW resonator, wherein the leaky waves propagate in a direction differing from a propagation direction of the acoustic standing wave.

    摘要翻译: BAW谐振器包括在两个激励电极之间具有压电层的谐振器区域,其中在谐振频率下操作BAW谐振器时形成声驻波。 此外,BAW谐振器包括形成为反映在操作BAW谐振器时产生的泄漏波的泄漏波反射结构,其中泄漏波在与声驻波的传播方向不同的方向上传播。