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    • 61. 发明授权
    • Micromechanical resonator
    • 微机械谐振器
    • US08334736B2
    • 2012-12-18
    • US13284196
    • 2011-10-28
    • Ville Kaajakari
    • Ville Kaajakari
    • H03H9/00H03H9/05H03H9/125H03H9/24
    • H03H9/2463H02N1/008H03H3/0076H03H9/02275H03H9/02338H03H9/2478H03H9/2484H03H2009/02299
    • The invention relates to design of micromechanical resonators and, more precisely, to the design of microelectromechanical systems (MEMS) resonators. The invention provides an improved design structure for a microelectromechanical systems (MEMS) resonator including a movable mass structure and a spring structure. The spring structure includes a spring element. The spring element is anchored from one end and connected to a plurality of electrode fingers on another end. The plurality of electrode fingers are operatively connected together at the other end of the spring element. The improved structure is frequency robust to manufacturing variations and enables reliable frequency referencing with good performance, particularly in small size solutions.
    • 本发明涉及微机械谐振器的设计,更确切地说,涉及微机电系统(MEMS)谐振器的设计。 本发明提供了一种用于包括可移动质量结构和弹簧结构的微机电系统(MEMS)谐振器的改进的设计结构。 弹簧结构包括弹簧元件。 弹簧元件从一端锚定并在另一端连接到多个电极指。 多个电极指在弹簧元件的另一端可操作地连接在一起。 改进的结构对于制造变化是稳定的,并且具有良好性能的可靠的频率参考,特别是在小尺寸解决方案中。
    • 63. 发明授权
    • Resonant circuit, method of producing same, and electronic device
    • 共振电路,制造方法和电子设备
    • US08035462B2
    • 2011-10-11
    • US12486669
    • 2009-06-17
    • Toru Watanabe
    • Toru Watanabe
    • H03H9/125H03H9/24H03H3/007H03B7/06
    • H03H3/0073H03H3/0076H03H9/02409H03H9/02433H03H9/2426H03H9/2457H03H2009/02511
    • A resonant circuit includes a substrate; a MEMS resonator including a fixed electrode and a movable electrode formed above the substrate and having a first terminal and a second terminal, the movable electrode having a movable portion opposing at least a part of the fixed electrode; and a voltage applying unit applying a bias voltage to the MEMS resonator, the voltage applying unit including a voltage divider circuit that includes a compensation resistance formed of a same layer as that of the movable portion to allow a resistance value to be changed by a thickness of the layer and a reference resistance formed of a layer different from that of the movable portion and connected to the compensation resistance to output a junction potential between the compensation resistance and the reference resistance to at least one of the first and the second terminals of the MEMS resonator.
    • 谐振电路包括基板; MEMS谐振器,包括固定电极和可动电极,其形成在所述基板上并具有第一端子和第二端子,所述可动电极具有与所述固定电极的至少一部分相对的可动部分; 以及向所述MEMS谐振器施加偏置电压的施加电压单元,所述电压施加单元包括分压电路,所述分压电路包括由与所述可动部分相同的层形成的补偿电阻,以允许电阻值改变厚度 以及由与可动部分不同的层形成的参考电阻并连接到补偿电阻,以将补偿电阻和参考电阻之间的结电位输出到第一和第二端子中的至少一个 MEMS谐振器。
    • 64. 发明授权
    • Resonant actuator
    • 谐振执行器
    • US08035283B2
    • 2011-10-11
    • US12505631
    • 2009-07-20
    • Hirozumi OgawaShinichiro Kawada
    • Hirozumi OgawaShinichiro Kawada
    • H03H9/125
    • H03H9/176H01L41/0475H01L41/0986H01L41/1878
    • A piezoelectric ceramic base member is formed of a bar shaped bismuth layer compound, and has main electrodes on two end surfaces in an oscillation direction, with connection electrodes at side-surface central portions of the piezoelectric ceramic base member electrically connected to the main electrodes through extraction conductors interposed therebetween, respectively. The oscillation and polarization directions are set in the same direction, and the piezoelectric ceramic base member is driven at a resonant frequency or at a frequency in the vicinity thereof. The crystal c axis is preferably oriented in a direction orthogonal to the polarization direction. The resonant actuator is able to obtain a high oscillation speed as it has a large mechanical quality factor Qm, and the oscillation is not disturbed by mechanical factors.
    • 压电陶瓷基体由条状铋层化合物形成,并且在振荡方向的两个端面上具有主电极,压电陶瓷基体的侧面中心部分的连接电极通过 提取导体分别插入其间。 将振荡和偏振方向设定在相同的方向,并且以谐振频率或其附近的频率驱动压电陶瓷基体。 晶体c轴优选地在与偏振方向正交的方向上取向。 谐振致动器能够获得高振荡速度,因为其具有大的机械品质因数Qm,并且振荡不受机械因素的干扰。
    • 69. 发明授权
    • Bifurcated electroacoustic delay line with diagonal coupling
    • 分叉电声延迟线与对角耦合
    • US4488128A
    • 1984-12-11
    • US487676
    • 1983-04-22
    • John A. Odozynski
    • John A. Odozynski
    • H03H9/36H03H9/30H03H9/125H03H9/40
    • H03H9/36
    • A bifurcated electroacoustic delay line includes first and second branches of a transmission medium, the branches being joined along respective common sides. Bonded to the common sides of the branches are respective first and second input and first and second output transducers, the transducers arranged so that the input transducers are positioned laterally adjacent each other and the output transducers are analogously positioned. An inductance diagonally couples the first output transducer to the second input transducer permits frequency tuning of the delay line.Diagonal coupling via an inductance operates to mitigate the effects of spurious responses derived from the divergence of electroacoustic waves between laterally adjacent tranducers and, collaterally, permits tuning of the delay line composite frequency response.
    • 分叉电声延迟线包括传输介质的第一和第二分支,所述分支沿相应的公共侧连接。 固定到分支的公共侧的是相应的第一和第二输入以及第一和第二输出换能器,换能器被布置成使得输入换能器彼此横向相邻地定位,并且输出换能器类似地定位。 将第一输出变换器对角地耦合到第二输入变换器的电感允许延迟线的频率调谐。 通过电感的对角耦合用于减轻源于横向相邻传感器之间的电声波发散的寄生响应的影响,并且相互影响延迟线复合频率响应的调谐。
    • 70. 发明授权
    • Reverberation apparatus
    • 混响装置
    • US4449234A
    • 1984-05-15
    • US346110
    • 1982-02-05
    • Takashi ShibataMasaaki Nishimura
    • Takashi ShibataMasaaki Nishimura
    • G10K15/10H03H9/125
    • G10K15/10
    • A reverberation apparatus includes a signal input terminal to be supplied with an input signal, an operational amplifier having an inverted input terminal, a non-inverted input terminal, and an output terminal. The inverted input terminal is connected to the signal input terminal through an input impedance circuit. The non-inverted input terminal is connected to a reference point, and the output terminal is connected to the reference point through an inductance circuit as a load and a first impedance circuit. A second impedance circuit is connected between the inverted input terminal of the operational amplifier and the connection point between the inductance circuit and the first impedance circuit. In this circuit, the inductance circuit functions as a drive circuit of the reverberation apparatus.
    • 混响装置包括要输入输入信号的信号输入端子,具有反相输入端子的运算放大器,非反相输入端子和输出端子。 反相输入端子通过输入阻抗电路连接到信号输入端子。 非反相输入端子连接到参考点,并且输出端子通过作为负载的电感电路和第一阻抗电路连接到参考点。 第二阻抗电路连接在运算放大器的反相输入端和电感电路与第一阻抗电路之间的连接点之间。 在该电路中,电感电路用作混响装置的驱动电路。