441results about How to "Raise the resonant frequency" patented technology

Embodiments disclosed herein generally include using a large number of small MEMS devices to replace the function of an individual larger MEMS device or digital variable capacitor. The large number of smaller MEMS devices perform the same function as the larger device, but because of the smaller size, they can be encapsulated in a cavity using complementary metal oxide semiconductor (CMOS) compatible processes. Signal averaging over a large number of the smaller devices allows the accuracy of the array of smaller devices to be equivalent to the larger device. The process is exemplified by considering the use of a MEMS based accelerometer switch array with an integrated analog to digital conversion of the inertial response. The process is also exemplified by considering the use of a MEMS based device structure where the MEMS devices operate in parallel as a digital variable capacitor.

Various configurations of micromachined optomechanical switching cells are disclosed herein. In accordance with the invention, an optomechanical switching cell is provided which includes an actuator positioned on a substrate and a mirror coupled to the actuator. The switching cell also includes an electrode disposed upon the substrate under the actuator. An insulator may also be interposed between the substrate and the electrode. In another aspect of the present invention the switching cell includes a latch having a first end region connected to the substrate and a second end region engaged by the mirror.

An inductive power receiver including a resonant circuit, a rectifier, a rectified current sense, and a communication and control unit includes a communications modulator and at least one signal generator operable to generate a set of communication signals including a series of pulses generated at characteristic frequencies. Communication signals provide instructions for an inductive power outlet to regulate power transfer to the inductive power receiver.

An optical scanning apparatus includes an in-plane vibratory mass platform having at least one diffraction grating formed thereon as the scanning element, at least one flexure structure that connects the mass platform to at least one fixed support, and at least one driving actuator that drives the mass platform into an in-plane vibratory motion which can be rotational and/or translational. The apparatus may also be formed by a mass platform having at least one diffraction grating formed thereon as the scanning element, at least one driving actuator connected to the mass platform through at least one flexure structure. The driving actuator drives the mass platform into an in-plane vibratory motion.

A thin-film piezoelectric resonator has a piezoelectric film which is formed via a space on a substrate and is supported on the substrate at least one location, an upper electrode which has a plurality of electrode layers and a connection part connecting the electrode layers to each other, each of the electrode layers being formed on the piezoelectric film, having the same width and being arranged at the same interval as the width, a lower electrode formed under the piezoelectric film, a first pad which is formed on the substrate and is electrically connected to the upper electrode, and a second pad which is formed on the substrate and is electrically connected to the lower electrode.

An integrated semiconducting device comprises a semiconducting substrate, a plurality of grounding strips disposed above the substrate in a lower metal level of the semiconducting device, an inductor positioned in an upper metal level of the semiconducting device, and a plurality of conducting vias connected to and extending away from the grounding strips towards the inductor. The inductor, conducting via, ground strips structure forms a Faraday cage that acts as a shield against electromagnetic radiation. The number and placement of the conductive vias are adjustable and can be optimized based on the relative importance of maximizing the quality factor Q of the inductor or minimizing the capacitance between the inductor and ground.

Various 3-port and 4-port micromachined optomechanical matrix switches are disclosed herein. In accordance with one aspect of the invention there is provided an optomechanical matrix switch including a substrate and a first plurality of optomechanical switching cells coupled thereto. Each of the first plurality of optomechanical switching cells is arranged to be in optical alignment with a first input port. A second plurality of optomechanical switching cells is also coupled to the substrate, each of the second plurality of optomechanical switching cells being in optical alignment with a second input port. In another aspect of the present invention an optomechanical matrix switch is provided which includes a substrate and a first plurality of optomechanical switching cells coupled thereto. Each of the first plurality of optomechanical switching cells is placed in optical alignment with one of a corresponding first plurality of input ports and with one of a corresponding first plurality of output ports. The matrix switch further includes a second plurality of optomechanical switching cells coupled to the substrate. Each of the second plurality of optomechanical switching cells is placed in optical alignment with one of a corresponding second plurality input ports and with one of a corresponding second plurality of output ports.

The invention relates to a two-dimensional high load-bearing large-caliber rapid control reflector. An outside surface of a rotating body and an inside surface of a supporting reflector frame of the reflector are both one part of a sphere surface. The two components are assembled in a mode that the spheres share the same spherical center and are in rigid connection with each other by a ball to form a rotary assembly similar to a bearing. The rotating body can universally rotate in the supporting reflector frame. Therefore, under the driving of a linear voice coil motor, the invention can realize high-frequency rapid two-dimensional rotation of the rotating body in the reflector frame and guarantees working stability and reliability of the rapid control reflector. On the other hand, the loads of rotating parts including a plane mirror is rigidly supported by the supporting reflector frame through the ball, which greatly improves bearing capacity and environmental suitability of the rapid control reflector.

The invention discloses a linear compressor of a plate spring supporting system adopting two different types of lines. The main assemblies thereof comprise four parts which are respectively a compressor assembly, a linear motor assembly, a piston assembly and a supporting system assembly. The compressor comprises a stand, a compressor shell, a compressor cylinder, an exhaust hole and a suction hole; the linear motor assembly comprises an inner yoke iron, an outer yoke iron, a permanent magnet, an anti-collision gasket, a coil framework and a coil on the upper surface thereof; a piston comprises a main piston shaft and a piston head; and a supporting system comprises two groups of plate spring groups with different types of line structures and a connecting frame. The structure has the characteristics that a spiral type plate spring supporting piston shaft assembly is adopted at one end with lighter mass of the piston head, and a spiral arm plate spring supporting piston head adopted at the end of the piston head moves in the cylinder to ensure clearance sealing; a linear arm plate spring is adopted at the rear end of the piston assembly to supply better support for the movement of the end with larger mass, the quantity of plate springs is reduced, and the volume of the compressor is saved.

A monolithic capacitor includes a main capacitor unit having first capacitor portions and a second capacitor portion arranged in a direction of lamination, with the first capacitor portion located towards at least one end in the direction of lamination, so that the first capacitor portion is located closer to a mounting surface than the second capacitor portion. The number of pairs of third and fourth lead-out portions for third and fourth internal electrodes in the second capacitor portion is less than the number of pairs of first and second lead-out portions for first and second internal electrodes in the first capacitor portion, so that the first capacitor portion contributes to decreasing ESL while the second capacitor portion contributes to increasing ESR.

This invention is neotype pressure resistance pressure sensor, including inward-leg wire, package outer, outward-leg wire, pin hole, substrate and the piezoresistor, installing the close structure piezoresistor and the banding piezoresistor,; the four piezoresistors make up of the Wheatstone bridge interconnect structure, a-alloy sputtering from the pin hole, installing the electronic glass mass on the surface of close structure outer. The production method is: (1)mixing; (2)surface thermal oxidization; (3)technic-processing of photoetch and plasma corrosion;(4)photoengraving the pin hole; (5)sputtering a-alloy; (6)static electrostatic encapsulating electronic glass; (7)testing and capsulation. The technic-scheme of this invention makes the production-craft more simple, and compatible with the craft of CMOS integrated circuit plate, and have more high harmonic frequency, and can work in the high temperature circumstance and assuring the compatibility of the production performance.

A wood-type golf club having an enlarged club head in the range of 250 to 300 cm.³ constructed of a material lighter than steel to maintain the total club head weight within normal limits including the weight of novel power shaft according to the present invention. The club head, without the power shaft, is approximately 175 gms. and the power shaft weighs approximately 25 gms., so the total club head weight is approximately 200 gms. and within normal limits. The power shaft, integral with the rear of the ball striking face wall at its forward end and integral or cast into the rear of the club head at its rear end, while reinforcing the ball striking face wall, increases the resonant frequency of the face wall to synchronize face wall rebound to the player's swing speed. Face wall resonant frequency is varied by changing the size and weight of the power shaft.

A microelectromechanical modulating magnetic sensor comprising a base; a magnetic transducer associated with the base that provides an output in response to a magnetic field; a pair of movable flux concentrators positioned to move relative to the magnetic transducer; the pair of movable flux concentrators having a region of high flux concentration between the pair of movable flux concentrators; the pair of flux concentrators moving together in tandem with the distance between the pair remaining substantially constant during movement; support structure for supporting the pair of movable flux concentrators; a power source for causing the movable flux concentrators to move at a frequency within a predetermined frequency range; whereby when the pair of movable flux concentrators is in a first position the region of high flux concentration is in a first location, and when the pair of movable flux concentrators is in a second position, the region of high flux concentration is in a second position; such that as the flux concentrators move from the first position to the second position the intensity of the flux sensed by the transducer is modulated as the region of high flux concentration approaches and recedes from the location of the transducer.

The invention discloses a loudspeaker diaphragm which comprises a ball top part (20) in the center and a folding part (10) at the rim. The folding part (10) is a single layer structure made from a TPEE (thermoplastic polyester elastomer) material layer (2) or is a composite structure provided with at least one TPEE material layer (2). Compared with diaphragms made from TPU materials, the diaphragm of the invention has good toughness and strength, can effectively reduce the vibration frequency, and expand the bandwidth of a product. Further, the diaphragm is also stable in structure and reliable in withstanding power and provides good stability of vibration frequency.

Disclosed is a vibration motor for a portable terminal, including a flat spring; a cylindrical magnetic substance mounted on the flat spring; an annular magnetic substance disposed around the cylindrical magnetic substance mounted on the flat spring; and a coil disposed between the cylindrical magnetic substance and the annular magnetic substance, wherein the magnetic substances perform a linear reciprocal movement by the electromagnetic force generated between the magnetic substances and the coil and by the elastic force of the flat spring as an electric current is applied to the coil. The vibration motor operates at higher resonant frequencies than those of conventional vibration motors, thereby improving the sense of an after-vibration and realizing a delicate haptic feedback function.

The invention relates to a graphene high-frequency nanomechanical resonator based on a flexible substrate and a preparing technology of the graphene high-frequency nanomechanical resonator and belongs to the technical field of communication electronic elements. According to the technology, the shape of a required gate electrode is etched on the flexible substrate. A metal layer is evaporated on the surface of the flexible substrate. Silicon dioxide sedimentation is conducted on the flexible substrate. Graphene is transferred to the portion right above the gate electrode and photoresist is painted on the gate electrode in a spiral mode. Titanium, platinum and gold are evaporated on a channel of the graphene so as to serve as a source electrode and a drain electrode. Finally, a whole element is coated with photoresist and the graphene high-frequency Q nanomechanical resonator of the flexible substrate can be obtained after processing. The structure of the graphene high-frequency Q nanomechanical resonator comprises the flexible substrate, a medium layer, the gate electrode and a graphene girder in a sequentially laminated mode. The source electrode and the drain electrode are located at the two sides of the graphene girder. The graphene high-frequency nanomechanical resonator is a microwave element which has the advantages of being high in frequency, high in quality factors, light, thin, soft, good in shock resistant performance and low in cost.

The utility model discloses a planar capacitance resonator and the related preparation method, comprising a resonance body, a sensor electrode, a driving electrode and a related supporting substrate. The resonator is a suspended structure, and is fixed on the substrate through an anchor point; each of the sensor electrode and the driving electrode comprises an electrode plate and a solder pad, the electrode plates of the sensor electrode and the driving electrode are arranged on the two side of the resonance body separately and keep a clearance from the resonance body, the clearance between the plates performs as the media to form the capacitor structure; the solder pads of the sensor electrode and the driving electrode are fixed on the insulating medium layer, and the solder pads are provided with metal electrodes; the insulating medium layer are fixed on the substrate. The clearance between the any two electrodes of the capacitors is narrower than 100nm. The utility model has the advantages of extremely high dynamic performance, the harmonic resonance frequency exceeding 100 MHz, and the Q factor up to 105.

The invention discloses a micro mass sensor based on a groove-shaped cantilever beam structure, and belongs to the technical field of sensors. In the groove-shaped cantilever beam of the sensor, one end of a fixed bock is provided with 1-2 same piezoelectric films, and a test substance adsorption film covers a cantilever end; and a resonant frequency difference delta f before and after the cantilever structure adsorbs a test substance is measured, and the mass m of the test substance is calculated further. By the introduction of the groove-shaped cantilever beam, the natural frequency of vibration and the adsorption area are increased, the sensitivity of the sensor is improved, and the measuring stability of the sensor is improved. The frequency change of the sensor caused by the mass of the adsorption film can be accurately measured through the piezoelectric films, and the mass of the test substance is calculated. The sensor has the characteristics of simple structure, large adsorption area, wide mass measuring range, high stability and sensitivity and the like, and the sensitivity can be improved by 20 percent to the maximum compared with that of a rectangular-section mass sensor with the same size particularly, so the sensor can be widely applied to measuring concentrations of gases/liquids, microparticles, dust, microbes such as bacteria or viruses and the like.

A rotary shaft includes internal self-dampening means for absorbing rotational energy generated by the rear axle and/or clutch of a motor vehicle.

Scan line position error resulting in banding, bow, skew, etc. is corrected by way of an agile beam steering mirror assembly in a ROS printing system and the like. The agile beam steering mirror system comprises a piezoelectric bending actuator fixedly mounted to a substrate at a proximate end thereof. A mirror structure is mounted at a free distal end of the bending actuator. Voltage applied to the bending actuator causes rotation of the mirror to thereby correct for positional errors of the scan line. Correction waveforms may be stored in control memory associated with the agile beam steering mirror assembly. A capacitive sensing circuit using a sensing electrode located beneath the free end of the bending actuator may be used in a feedback arrangement to determine and control mirror position.