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    • 26. 发明授权
    • MEMS RESONATOR FOR FILTERING AND MIXING
    • 用于过滤和混合的MEMS谐振器
    • EP2291910B1
    • 2011-11-09
    • EP09766291.0
    • 2009-06-18
    • NXP B.V.
    • STEENEKEN, Peter, GerardVAN BEEK, Jozef, T.MREIMANN, Klaus
    • H03D7/00
    • H03D7/00H03H9/02259H03H9/02275H03H9/2452H03H9/465H03H2009/02496H03H2009/2442
    • A method of operating a micro-electromechanical system, comprising a resonator; an actuation electrode; and a first detection electrode, to filter and mix a plurality of signals. The method comprises applying a first alternating voltage signal to the actuation electrode, wherein an actuation force is generated having a frequency bandwidth that is greater than and includes a resonant bandwidth of a mechanical frequency response of the resonator, and wherein a displacement of the resonator is produced which is filtered by the mechanical frequency response and varies a value of an electrical characteristic of the first detection electrode. The method also comprises applying a second alternating voltage signal to the first detection electrode, wherein the second voltage signal is mixed with the varying value to produce a first alternating current signal. The first alternating current signal is detected at the first detection electrode.
    • 一种操作微机电系统的方法,所述微机电系统包括谐振器; 致动电极; 和第一检测电极,以过滤和混合多个信号。 该方法包括向致动电极施加第一交流电压信号,其中产生具有大于并且包括谐振器的机械频率响应的谐振带宽的频率带宽的致动力,并且其中谐振器的位移是 其被机械频率响应滤波并且改变第一检测电极的电特性的值。 该方法还包括将第二交变电压信号施加到第一检测电极,其中第二电压信号与变化值混合以产生第一交流信号。 在第一检测电极处检测第一交流信号。
    • 28. 发明公开
    • TEMPERATURE COMPENSATED PLATE RESONATOR
    • 温度补偿板谐振器
    • EP3202035A1
    • 2017-08-09
    • EP15786990.0
    • 2015-10-02
    • Teknologian Tutkimuskeskus VTT OY
    • JAAKKOLA, AnttiPEKKO, PanuPRUNNILA, MikaPENSALA, Tuomas
    • H03H9/02H03H9/24
    • H03H9/17H01L41/18H03H9/02448H03H9/2436H03H2009/02503H03H2009/02527H03H2009/2442
    • The invention relates to a microelectromechanical resonator device comprising a support structure and a semiconductor resonator plate doped to a doping concentration with an n-type doping agent and being capable of resonating in a width-extensional resonance mode. In addition, there is at least one anchor suspending the resonator plate to the support structure and an actuator for exciting the width-extensional resonance mode into the resonator plate. According to the invention, the resonator plate is doped to a doping concentration of 1.2*1020 cm−3 or more and has a shape which, in combination with said doping concentration and in said width-extensional resonance mode, provides the second order temperature coefficient of frequency (TCF2) to be 12 ppb/C2 or less at least at one temperature. Several practical implementations are presented.
    • 微机电谐振器装置技术领域本发明涉及一种微电子机械谐振器装置,其包括支撑结构和利用n型掺杂剂掺杂到掺杂浓度并且能够在宽度 - 拉伸谐振模式下谐振的半导体谐振器板。 此外,至少有一个锚定件将谐振器板悬挂到支撑结构上,以及一个致动器,用于将宽度 - 拉伸谐振模式激励到谐振器板中。 根据本发明,谐振器板被掺杂至1.2×1020cm-3或更高的掺杂浓度,并且具有这样的形状,其与所述掺杂浓度结合并且在所述宽度 - 拉伸谐振模式中提供二阶温度系数 频率(TCF2)至少在一个温度下为12ppb / C2或更低。 介绍了几个实际的实现。