摘要:
A micro-resonator wherein the combined impedance of the resonator can be reduced so as to allow the resonator to be applied to a desired device. A communication apparatus having a filter comprising such a micro-resonator. The micro-resonator is configured by electrically parallel connecting a plurality of micro-resonator elements having a beam structure. The communication apparatus uses the micro-resonator as a filter.
摘要:
A torsional resonator for suppressing unnecessary flexural vibration and providing excellent resonance characteristic is provided. A vibrator is a beam structure or a paddle-like projection structure added onto a beam structure and an electrostatic force produced due to the potential difference between an electrode and the vibrator adds a moment with the axis of the beam of the vibrator as the center axis, but does not add a force for producing flexure to the beam. As one method, the same AC signal and DC bias voltages different in polarity are applied to an electrode pair of the electrode brought away from the vibrator and the electrode brought close to the vibrator with torsional vibration of the vibrator, so that only torsional vibration can be excited.
摘要:
A micromechanical electrostatic vibrator (100) of the present invention comprises a plate-shaped vibration body (105), a pair of electrodes (107) arranged oppositely to each other at both sides of the vibration body with a gap (106) from an outer circumferential portion of the vibration body, feeding means (110) for applying in-phase alternating-current power to the pair of electrodes, and detecting means (103) and (120) for obtaining an output corresponding to a change in capacitance between the vibration body and the electrodes. The planar shape of the vibration body takes a shape having a curved outline which comprises a neck portion.
摘要:
An object is to provide an electromechanical filter which can define a vibration mode so that a vibrator can be excited only in a desired vibration mode, that is, a filter which can suppress any vibration mode other than a desired vibration mode. The electromechanical filter includes a first member for inputting a signal, a second member disposed at a predetermined distance from the first member so as to surround the first member and to be excited due to an electrostatic force caused by the signal input from the first member, and a third member disposed at a predetermined distance from the second member so as to surround the second member and to detect vibration of the second member. The second member is designed to receive an attractive force from the first member and the third member so as to be bound and regulated as to a vibration direction.
摘要:
A resonator has a main resonator body (R) and a secondary resonator structure (A, D). The second resonator structure is coupled to nodal points of the main resonator body with respect to the main resonance mode. The resonator body has a desired mode of vibration of the resonator alone, and a parasitic mode of vibration, wherein the parasitic mode comprises vibration of the resonator body and the secondary resonator structure as a composite body. In this way, unwanted vibrational modes are quenched by the second suspended structure. This suppresses the quality factor of parasitic modes by coupling the anchor arrangement to the resonator for those modes. In this way, the autoparametric resonance which limits the vibration amplitude is shifted so that the stable vibration amplitude of the resonator is increased.
摘要:
Resonant filter (10) comprising a matrix (100) of n × m resonators of the N/MEMS type, each resonator comprising actuation means and detection means. An input (12) of the filter, intended to receive an electrical input signal, is electrically connected to the resonator actuation means. The outputs of the resonator detection means are electrically connected together and to an output (14) of the filter, such that the signal intended to be obtained as output of the filter is an image of the sum of the mechanical responses of the resonators. The resonators are not mechanically coupled together.
摘要翻译:一种谐振滤波器,包括N / m M型谐振器的矩阵,每个谐振器包括致动机构和检测机构。 被配置为接收电输入信号的滤波器的输入电连接到谐振器致动机构。 谐振器检测机构的输出电连接到滤波器的输出端,使得作为滤波器的输出获得的信号是谐振器的机械响应之和的图像。 谐振器不是机械耦合在一起的。