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    • 3. 发明申请
    • ELECTROMECHANICAL TRANSDUCER AND ELECTRICAL DEVICE
    • 机电传感器和电气设备
    • WO2005025057A2
    • 2005-03-17
    • PCT/IB2004051524
    • 2004-08-23
    • KONINKL PHILIPS ELECTRONICS NVVAN BEEK JOZEF T MSTEENEKEN PETER G
    • VAN BEEK JOZEF T MSTEENEKEN PETER G
    • H03H9/02H03H9/24H03L1/04H03H9/00H03H9/08
    • H03H9/2405H03H9/02448H03H9/2463H03H2009/02496H03L1/04
    • The electromechanical transducer (1) for transducing an electrical input signal into an electrical output signal comprises a resonator element (20) and an actuator (30) for inducing an elastic deformation of the resonator element (20). The elastic deformation is dependent on the electrical input signal and is resonantly enhanced when the electrical input signal comprises a signal component changing substantially with a resonance frequency of the resonator element. The electrical output signal is a function of the elastic deformation. The resonance frequency includes a nominal frequency at an operating temperature and a temperature dependent frequency deviation from the nominal frequency. To stabilize the resonance frequency of the resonator element the electromechanical transducer (1) further comprises a sensing element (40) for providing an electrical sensing signal, which is a function of a temperature of the resonator element (20), and a heating element (50) for heating the resonator element to reduce the temperature dependent frequency deviation to keep the resonance frequency substantially equal to the nominal frequency. The heating element (50) is controlled by an electrical heating signal derived from the electrical sensing signal.
    • 用于将电输入信号转换成电输出信号的机电换能器(1)包括用于引起谐振器元件(20)的弹性变形的谐振元件(20)和致动器(30)。 弹性变形取决于电输入信号,并且当电输入信号包括基本上以谐振元件的谐振频率改变的信号分量时,共振地增强。 电输出信号是弹性变形的函数。 谐振频率包括在工作温度下的标称频率和与标称频率的温度相关的频率偏差。 为了稳定谐振器元件的谐振频率,机电换能器(1)还包括感测元件(40),用于提供作为谐振器元件(20)的温度的函数的电感测信号和加热元件( 50),用于加热谐振元件以降低与温度相关的频率偏差,以保持谐振频率基本上等于标称频率。 加热元件(50)由来自电感测信号的电加热信号控制。
    • 6. 发明申请
    • TUNABLE MEMS CAPACITOR
    • 可控MEMS电容器
    • WO2008152559A2
    • 2008-12-18
    • PCT/IB2008/052253
    • 2008-06-09
    • NXP B.V.STEENEKEN, Peter, G.REIMANN, Klaus
    • STEENEKEN, Peter, G.REIMANN, Klaus
    • H03J5/24H01G5/16
    • H01G5/16H01G5/013H01G5/0136H01G7/06H01G2005/02H03J5/248
    • A MEMS tunable capacitor comprises first and second opposing capacitor electrodes (10,12), wherein the second capacitor electrode (12) is movable by a MEMS switch to vary the capacitor dielectric spacing, and thereby tune the capacitance. A tunable dielectric material (14) and a non- tunable dielectric material are in series between the first and second electrodes. The tunable dielectric material occupies a dimension gd of the electrode spacing, and the non-tunable dielectric material occupies a dimension g of the electrode spacing. A third electrode (20) faces the movable second electrode (12) for electrically controlling tunable dielectric material. A controller is adapted to vary the capacitor dielectric spacing for a first continuous range of adjustment of the capacitance of the MEMS capacitor, and to tune the dielectric material (14) for a second continuous range of adjustment of the capacitance of the MEMS capacitor, thereby to provide a continuous analogue range of adjustment including the first and second ranges. This arrangement provides independent control of the MEMS function and the dielectric tuning function, and enables a continuous adjustability.
    • MEMS可调谐电容器包括第一和第二相对电容器电极(10,12),其中第二电容器电极(12)可通过MEMS开关移动以改变电容器介电间距,从而调谐电容。 可调电介质材料(14)和非可调电介质材料串联在第一和第二电极之间。 可调电介质材料占电极间距的尺寸gd,不可调电介质材料占电极间距的尺寸g。 第三电极(20)面向可动第二电极(12),用于电控制可调电介质材料。 控制器适于改变用于MEMS电容器的电容的第一连续调节范围的电容器电介质间隔,并且调谐电介质材料(14)用于MEMS电容器的电容的第二连续调节范围,从而 以提供包括第一和第二范围的连续模拟调节范围。 这种布置提供了对MEMS功能和介质调谐功能的独立控制,并且实现了连续可调性。
    • 10. 发明申请
    • SPRING STRUCTURE FOR MEMS DEVICE
    • MEMS器件弹簧结构
    • WO2006046192A1
    • 2006-05-04
    • PCT/IB2005/053475
    • 2005-10-24
    • KONINKLIJKE PHILIPS ELECTRONICS N. V.STEENEKEN, Peter G.VAN BEEK, Jozef Thomas MartinusRIJKS, Theo
    • STEENEKEN, Peter G.VAN BEEK, Jozef Thomas MartinusRIJKS, Theo
    • H01H59/00
    • H01H59/0009H01G5/16H01G5/18H01G5/40H01H1/24H01H2059/0063
    • A MEM device has a movable element (30) , a pair of electrodes (e1, e2) to move the movable element, one electrode having an independently movable section (e3), resiliently coupled to the rest of the respective electrode to provide additional resistance to a pull in of the electrodes. This can enable a higher release voltage Vrel , and thus reduced risk of stiction. Also, a ratio of Vpi to Vrel can be reduced, and so a greater range of voltage is available for movement of the movable element. This enables faster switching. The area of the independently movable section is smaller than the rest of the electrode, and the spring constant of the resilient coupling is greater than that of the flexible support. Alternatively, the movable element can have a movable stamp section resiliently coupled and protruding towards the substrate to provide an additional resistance to pull in when it contacts the substrate.
    • MEM器件具有可移动元件(30),一对电极(e1,e2)以移动可移动元件,一个电极具有可独立移动的部分(e3),弹性地联接到相应电极的其余部分以提供额外的电阻 到电极的拉。 这可以实现更高的释放电压Vrel,从而降低静电的风险。 此外,可以减小Vpi与Vrel的比率,因此可用于可移动元件的移动的较大范围的电压。 这样可以实现更快的切换。 可独立移动部分的面积小于电极的其余部分,并且弹性联接件的弹簧常数大于柔性支撑件的弹簧常数。 或者,可移动元件可以具有弹性耦合并朝向基板突出的可移动的印模部分,以在与基板接触时提供额外的拉入阻力。