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Resonance Frequency patents



      

This page is updated frequently with new Resonance Frequency-related patent applications.




Date/App# patent app List of recent Resonance Frequency-related patents
02/04/16
20160036408 
 Snap-on coaxial cable balun and  trapping rf current on outside shield of coax after installation patent thumbnailSnap-on coaxial cable balun and trapping rf current on outside shield of coax after installation
Apparatus and method for a radially attachable rf trap attached from a side to a shielded rf cable. In some embodiments, the rf trap creates a high impedance on the outer shield of the rf cable at a frequency of rf signals carried on at least one inner conductor of the cable.
Life Services, Llc


02/04/16
20160036116 
 Dielectric resonator, dielectric filter, and fabrication method patent thumbnailDielectric resonator, dielectric filter, and fabrication method
The present application provides a dielectric resonator, a dielectric filter, a base station and a method for fabricating the dielectric resonator or the dielectric filter. The dielectric resonator includes: a solid dielectric resonator body, a blind hole located on one side of the solid dielectric resonator body, a metalized layer covering both a surface of the solid dielectric resonator body and a surface of the blind hole, and a demetallized notch located at the metalized layer on the surface of the blind hole.
Huawei Technologies Co., Ltd.


02/04/16
20160033959 
 Servo motor controller having self-measuring function and self-monitoring function of mechanical stiffness patent thumbnailServo motor controller having self-measuring function and self-monitoring function of mechanical stiffness
A servo motor controller includes a speed command generating unit for generating a speed command value of the servo motor, a speed detecting unit that detects a speed of the servo motor, a torque command generating unit for generating a torque command value, a sine wave generating unit for generating a sinusoidal disturbance value, a frequency response calculating unit for calculating a frequency response when the sinusoidal disturbance value has been input to a speed control loop, a resonance frequency detecting unit for detecting a resonance frequency at which a gain is maximized, a resonance frequency storing unit for storing the resonance frequency, at least one filter for attenuating a specific frequency band component included in the torque command value, and a resonance frequency comparing unit for measuring stiffness of a machine tool based on the resonance frequency and adjusts the filter with respect to the resonance frequency.. .
Fanuc Corporation


02/04/16
20160033592 
 Enhancement of magnetic resonance image resolution by using bio-compatible, passive resonator hardware patent thumbnailEnhancement of magnetic resonance image resolution by using bio-compatible, passive resonator hardware
Embodiments of the present invention address the problems with previously known mri enhancement resonators. The embodiments provide capacitances that are sufficiently large to result in resonance frequencies that are sufficiently low for medical mri applications in devices that are sufficiently small for implantation into the body.

02/04/16
20160033422 
 Fano resonance microwave spectroscopy of high absorption matter patent thumbnailFano resonance microwave spectroscopy of high absorption matter
The invention is a method of fano resonance microwave spectroscopy of high absorption matter. The method comprises: embedding a magnetic-dipolar-mode (mdm) ferrite disk in the microwave cavity, loading a sample of the high absorption matter in the microwave cavity, using a bias magnetic field to tune the mdm resonance frequency of the ferrite disk to the resonance frequency of the cavity; and observing the symmetric lorentz-like lineshape of the resonance peaks that are obtained..
B.g. Negev Technologies And Applications Ltd., At Ben-gurion University


02/04/16
20160033401 
 Plasmonic structure with enhanced bandwidth patent thumbnailPlasmonic structure with enhanced bandwidth
Embodiments are directed to a plasmonic structure having an enhanced resonance frequency bandwidth. In one aspect, a plasmon-enhanced coupler is provided having a first plasmon region and a second plasmon region.
International Business Machines Corporation


01/28/16
20160028374 
 Apparatus and  tuning a resonance frequency patent thumbnailApparatus and tuning a resonance frequency
There are disclosed various apparatuses and methods for tuning a resonance frequency. In some embodiments there is provided an apparatus (200) comprising at least one input electrode (202, 204) for receiving radio frequency signals; a graphene foil (210) for converting at least part of the radio frequency signals into mechanical energy; at least one dielectric support element (212) to support the graphene foil (210) and to space apart the at least one input electrode (202, 204) and the graphene foil (210).
Nokia Technologies Oy


01/28/16
20160026130 
 Fixing apparatus patent thumbnailFixing apparatus
A fixing apparatus includes a tubular rotation member including a conductive layer, a helical coil, a resonance circuit, including a resonance capacitor, formed with the rotation member and the coil, a resonance inverter configured to control the resonance circuit, and a control unit configured to control electric power supplied to the resonance inverter, wherein the conductive layer generates heat with electromagnetic induction caused by magnetic flux generated through the coil, wherein the control unit sets a driving frequency of the resonance inverter according to at least one of a size of the recording medium and a temperature of a non-sheet-passing portion of the rotation member, and wherein the control unit changes a resonance frequency of the resonance circuit according to the set driving frequency.. .
Canon Kabushiki Kaisha


01/28/16
20160022154 
 System including guidewire for detecting fluid pressure patent thumbnailSystem including guidewire for detecting fluid pressure
A system for detection of blood pressure in a blood vessel includes a guide wire and a lc resonance circuit provided at a distal end of the guide wire. The resonance circuit may be a non-lc resonance circuit responsive to changes in pressure of fluid external to the guide wire such that the resonance circuit has a resonance frequency that varies in accordance with changes in pressure of the external fluid..
Guided Interventions, Inc.


01/21/16
20160021463 
 Vibrating body for acoustic transducer and speaker device patent thumbnailVibrating body for acoustic transducer and speaker device
A vibrating body for an acoustic transducer is provided, in which the high resonance frequency associated with inverse resonance can be outside the audible range and which can improve the acoustic characteristic of a speaker device. The vibrating body 1 for an acoustic transducer includes: a diaphragm 2 including a first vibrating part 2a and a second vibrating part 2b formed in proximity of the outer circumferential edge of the first vibrating part 2a; and an edge portion 3 formed in proximity of the outer circumferential edge of the diaphragm 2.
Tohoku Pioneer Corporation


01/21/16
20160020712 

Vibration wave motor


A vibration wave motor includes a vibration plate having a flat plate portion and protruding portions, a piezoelectric element that performs high-frequency vibration, a friction member contacting the protruding portions, and a first natural vibration mode and a second natural vibration mode, which are excited in the vibration plate by the high-frequency vibration, the vibration plate and the friction member moving relatively to each other, maximum amplitude generated on tip ends of the protruding portions by the first natural vibration mode is larger than maximum amplitude generated on tip ends of the protruding portions by the second natural vibration mode, a resonance frequency of the first natural vibration mode is lower than a resonance frequency of the second natural vibration mode, and amplitudes of the first natural vibration mode and the second natural vibration mode in a frequency range at a time of drive substantially coincide with each other.. .
Canon Kabushiki Kaisha


01/21/16
20160020527 

Antenna device


An antenna device includes a ground; a monopole antenna including a first section running from a feeding point along the ground, a second section running in a direction away from the ground, and a third section running along the ground, the monopole antenna having a length corresponding to ¼ of a wavelength at a first resonance frequency; a parasitic element including a first section whose end is connected to the ground in the vicinity of the end of the first section of the monopole antenna and that runs in a direction away from the ground, and a second section, the parasitic element having a length corresponding to ¼ of a wavelength at a second resonance frequency; and a dipole antenna provided along the third section of the monopole antenna and the parasitic element, the dipole antenna having a length corresponding to ½ of a wavelength at a third resonance frequency.. .
Fujitsu Limited


01/21/16
20160018294 

Vibration damping system and vehicle


A vibration damping system comprises a vibration applying device mounted on a frame and a control device that controls the vibration applying device, the control device comprising a voltage command producing part that produces a driving voltage command to drive the vibration applying device and a vibration failure diagnosis part that diagnoses whether there is failure based on a vibration detection signal output by a vibration detecting device, wherein the voltage command producing part produces the driving voltage command corresponding to a diagnosis frequency that is previously set at a frequency identical to a resonance frequency of the frame or the vibration applying device or at a predetermined frequency close to the resonance frequency and makes the vibration applying device generate the vibration applying force according to the driving voltage command, and the vibration failure diagnosis part diagnoses whether there is failure based on the vibration detection signal.. .
Sinfonia Technology Co., Ltd.


01/14/16
20160013865 

Micro-disc modulator, silicon photonic device and optoelectronic communication apparatus using the same


Various embodiments of a micro-disc modulator as well as a silicon photonic device and an optoelectronic communication apparatus using the micro-disc modulator are described. In one aspect, a device includes a soi substrate and a silicon photonic structure formed on a primary surface of the soi substrate.
Photonic International Pte. Ltd.


01/14/16
20160013394 

Multi-cell transducer


The present invention relates to a transducer device having a planar array of electroacoustic cells, each including a piezoelectric bilayer unit. The transducer device achieves high transmission sensitivity across a broad bandwidth.
Microtech Medical Technologies Ltd.


01/14/16
20160010994 

Mems gyro motor loop filter


A motor drive loop circuit for a micro-electro-mechanical system (mems) gyroscope is provided. The motor drive loop circuit includes a motor configured to drive a proof mass in the mems gyroscope and a minus-90-degree phase-shift twin-tee notch filter.
Honeywell International Inc.


01/14/16
20160010721 

Torsional resonance frequency adjustor


Engaging inclined surfaces of an inner ring and an outer ring create wedge action inducing an inward radial force as the rings are forced together longitudinally, holding the adjustor on a rotating body. An inner total arcuate length of each ring is smaller than an outer total arcuate length of a respective target body (inner ring for outer ring, rotating body for inner ring).
General Electric Company


01/14/16
20160008621 

Biological resonance chip


The present invention is a biological resonance chip utilizing a human biological micro-wave and coupling resonance technique by consisting of a printed circuit sticker at which at least a biological micro-wave receiver, a high frequency oscillating chip and at least a biological micro-wave transmitter are provided and electrically connected. By the aforesaid configuration, a product made by the printed circuit sticker can be placed at an arbitrary area of a human body from which a human biological micro-wave is emitted, picked by the biological micro-wave receiver, received by the high frequency oscillating chip for amplifying a power level and transmitted by the biological micro-wave transmitter to the human body for improving a health condition thereof.

01/07/16
20160004954 

Frequency tuning of an electronic tag


An electronic tag including: a first planar conductive winding forming an antenna coupled, with or without contact, with an electronic circuit; and a correction element, placed on the first winding and having its shape and position relative to the first winding selected according to a resonance frequency correction desired for the assembly.. .
Commissariat A L'energie Atomique Et Aux Energies Alternatives


12/31/15
20150382102 

Dynamic microphone and forming back-side air chamber


A dynamic microphone which prevents a wall forming a back-side air chamber from having a certain resonance frequency and effectively prevents the generation of standing waves in the back-side air chamber is provided. A dynamic microphone includes a dynamic microphone unit including a diaphragm configured with a voice coil and a magnetic circuit having a magnetic gap provided so as to allow the voice coil to vibrate, a bottomed case which is coupled to the dynamic microphone unit and forms a back-side air chamber communicating with back side of the diaphragm, and an acoustic resistance body which is pressingly attached in the case and composed of metal fiber including a pocket, an open cross sectional area of the pocket gradually decreasing toward the direction remote from the dynamic microphone unit..
Kabushiki Kaisha Audio-technica


12/31/15
20150381344 

Semiconductor device


A semiconductor device includes a controlled oscillator and a control unit. The controlled oscillator includes a resonance circuit, an amplification unit, and a current adjustment unit.
Renesas Electronics Corporation


12/31/15
20150381064 

Bidirectional dc/dc converter


A bidirectional dc/dc converter includes first and second control circuits, and first and second bridge circuits respectively connected to first and second direct current voltage supplies. In one embodiment variant, when power is supplied from the first direct current voltage supply to the second direct current voltage supply, the first control circuit carries out pfm control of the first bridge circuit at a frequency equal to or lower than the resonance frequency of an lc resonant circuit in accordance with a control amount based on the voltage and current of the second direct current voltage supply.
Fuji Electric Co., Ltd.


12/31/15
20150380978 

Wireless charger


The invention relates to decreasing power consumption of wireless charging devices in standby condition. A method for decreasing power consumption comprises feeding at least one detecting signal as a pulse to a wireless charging coil (120) of a power transmitter (100) comprising a charging area, wherein the detecting signal corresponds with an expected resonance frequency of the wireless charging coil (120) measuring a reflected signal caused by feeding the detecting signal, determining whether the reflected signal satisfies a non-resonance condition and activating a power transmitting circuit in response to determining that the reflected signal satisfies the non-resonance condition.
Nokia Corporation Oy


12/31/15
20150380944 

Power supply device, integrated circuit, energy transmitter and impedance matching method


A resonance contactless power supply device can include: (i) a converter configured to convert an input power signal to an adjustable dc voltage; (ii) an inverter configured to receive the adjustable dc voltage, and to generate an ac voltage with a leakage inductance resonance frequency; (iii) a first resonance circuit having a transmitting coil, and being configured to receive the ac voltage from the inverter; (iv) a second resonance circuit comprising a receiving coil that is contactlessly coupled to the transmitting coil, where the second resonance circuit is configured to receive electric energy from the transmitting coil; and (v) a control circuit configured to control the adjustable dc voltage according to a phase difference between the ac voltage and an ac current output by the inverter, such that the phase difference is maintained as a predetermined angle.. .
Silergy Semiconductor Technology (hangzhou) Ltd


12/24/15
20150369605 

Symmetric three-laser resonator fiber optic gyroscope


A resonator fiber optic gyroscope comprises a master laser that emits a reference optical signal, a first slave laser that emits a clockwise optical signal, and a second slave laser that emits a counter-clockwise optical signal. A resonator ring cavity in optical communication with the first slave laser and second slave laser is configured to receive the optical signals from the slave lasers without receiving the reference optical signal.
Honeywell International Inc.


12/24/15
20150367708 

Tuned air extractor to prevent wind throb in a vehicle


An air extractor is provided for reducing wind throb in a vehicle. The air extractor includes a support having a first opening.
Ford Global Technologies, Llc


12/17/15
20150365139 

Transceivers for near field communication, near field communication devices, and electronic systems having the same


A transceiver for near field communication may include: a resonance circuit coupled between a first node and a second node, the resonance circuit having a resonance frequency and being configured to emit an electromagnetic wave to communicate data with an external device; a first capacitor coupled between the first node and a third node; a second capacitor coupled between the second node and a fourth node; and/or a filter coupled among a first transmission electrode, a second transmission electrode, the third node, and the fourth node in an asymmetrical structure to provide a first frequency response and a second frequency response to the first transmission electrode and the second transmission electrode, respectively, the first frequency response being different from the second frequency response, the filter being configured to receive the data through the first transmission electrode and the second transmission electrode.. .

12/17/15
20150365066 

Power transmission system, transmission apparatus, receiving apparatus, and power transmission method


A transmission apparatus transmits electric power via a medium that is present between the transmission apparatus and a receiving apparatus. The transmission apparatus includes: an antenna; and a power transmission circuit that outputs electric power via the antenna of the transmission apparatus, the electric power having a first resonance frequency determined by an impedance of the medium, an impedance of the antenna of the transmission apparatus, and an impedance of an antenna of the receiving apparatus..
Nec Corporation


12/17/15
20150362425 

Single molecule spectroscopy using photothermal tuning of optical microcavities


Methods and apparatuses for single particle and single molecule spectroscopy are provided. A method comprises exposing the surface of an optical microcavity characterized by at least one resonance frequency to a sample such that a single particle or a single molecule from the sample adsorbs onto the surface of the microcavity; evanescently coupling a probe laser beam into the microcavity, wherein the wavelength of the probe laser beam substantially matches the at least one resonance frequency; illuminating the surface of the microcavity with a free space pump light beam such that the focal spot of the free space pump light beam substantially overlaps with the single particle or the single molecule; and detecting light from the probe laser beam, wherein the wavelength of the free space pump light beam is that which generates sufficient heat via energy absorbed by the single particle or the single molecule from the free space pump light beam to induce a shift in the at least one resonance frequency, thereby providing a change in an optical characteristic of the detected light from the probe laser beam..
Wisconsin Alumni Research Foundation


12/17/15
20150361841 

Vehicle exhaust system with resonance damping


A vehicle exhaust system includes an exhaust component having an outer surface and an inner surface that defines an internal exhaust component cavity. At least one bleed hole is formed in the exhaust component to reduce a resonance frequency.
Faurecia Emissions Control Technologies


12/10/15
20150358740 

Electrical tuning of parameters of piezoelectric actuated transducers


Parameters, such as, quality factor and/or resonance frequency of an acoustic transducer can be electrically tuned. The acoustic transducer can include a piezoelectric layer deposited on a silicon supporting layer, a first electrode layer deposited on the piezoelectric layer, and a second electrode layer deposited between the silicon supporting layer and piezoelectric layer.
Invensense, Inc.


12/10/15
20150358026 

Apparatus, system, and frequency generation using an atomic resonator


Some demonstrative embodiments include devices, systems and/or methods of generating a frequency reference using a solid-state atomic resonator formed by a solid-state material including an optical cavity having color centers. A device may include a solid-state atomic clock to generate a clock frequency signal, the solid-state atomic clock including a solid state atomic resonator formed by a solid-state material including an optical cavity having color centers, which are capable of exhibiting hyperfine transition, wherein the solid-state atomic clock may generate the clock frequency signal based on a hyperfine resonance frequency of the color centers.

12/10/15
20150357958 

Control vibration generator and vibration generator


A control method for a vibration generator is provided. The vibration generator includes a fixed part around which a coil is wound, a movable part having a magnet, a bridge part movably supporting the movable part, and a power supply unit which applies an alternating current of a predetermined frequency to the coil.
Minebea Co., Ltd.


12/10/15
20150357843 

Storage battery equalization device capable of charging battery pack including storage battery modules having different output voltages in short time


A storage battery equalization device is provided with: a battery pack including a plurality of storage battery modules; a plurality of equalization circuits corresponding to the respective storage battery modules, each including a dc/ac mutual converter circuit, a variable capacitor, and a transformer; external wirings interconnecting secondary windings of the transformers; voltage monitors each being connected across both electrodes of a corresponding storage battery module; and an equalization control unit. The equalization control unit determines equalization groups, each including one or more storage battery modules for discharging and one or more storage battery modules for charging, sets one of electrostatic capacitance values to the variable capacitors for each equalization group, the electrostatic capacitances corresponding to resonance frequencies of the equalization circuits, and controls a frequency of an alternating current outputted from the dc/ac mutual converter circuit of each equalization circuit, to be the resonance frequency of the equalization circuit..
Mitsubishi Electric Corporation


12/10/15
20150355306 

Method and magnetic resonance generating a parameter map to compensate local inhomogeneities in the basic magnetic field


In a method and a controller for generating a parameter map for a target volume in an examination object, that represents a field deviation from the resonance frequency of a first spectral component of tissue of object in a magnetic resonance tomography scanner, a spatial region of the object, which includes at least the target volume, is excited. At least three echo signals are formed, wherein a first echo time difference between two the echo signals is chosen such that the phase evolutions of the signals of a second spectral component of the tissue differ, during the first echo time difference, from the first spectral component substantially by 2π, and an echo time of at least a further one of the echo signals is chosen such that it lies between the echo times of the two echo signals having the first echo time difference.
Siemens Aktiengesellschaft


12/03/15
20150349743 

Acoustic resonator comprising vertically extended acoustic cavity


A bulk acoustic wave (baw) resonator having a vertically extended acoustic cavity is provided. The baw resonator includes a bottom electrode disposed on a substrate over a cavity formed in the substrate; a piezoelectric layer disposed on the bottom electrode, and a top electrode disposed on the piezoelectric layer.
Avago Technologies General Ip (singapore) Pte. Ltd.


12/03/15
20150346849 

Position pointer of the electromagnetic induction type and electronic ink cartridge


A position pointer is disclosed, in which an electronic ink cartridge of an electromagnetic induction type is accommodated. The electronic ink cartridge includes a resonance circuit having a coil and a capacitor circuit, and is configured to detect pressure applied to a core member accommodated in the position pointer based on a variation of a resonance frequency of the resonance circuit.
Wacom Co., Ltd.


12/03/15
20150346306 

Pulse detection apparatus and pulse detection method


Provided is a pulse detection apparatus and a pulse detection method less susceptible to movement of a subject and less susceptible to noise. An oscillation frequency controller is configured to cause a frequency variable oscillator to oscillate at a predetermined oscillation frequency, which is a frequency within a range assumed as a resonance frequency of a molecule of a predetermined constituent constituting the blood flowing through a human body.
Kyushu Institute Of Technology


12/03/15
20150346126 

Sensor, measuring device, and measuring method


A sensor measures a sample in a measuring cell including a helix conductor. The shell structure of the measuring cell is made of an electrically non-conductive material.
Senfit Oy


12/03/15
20150346047 

Tire pressure decrease detection apparatus and method, and computer readable medium therefor


A tire pressure decrease detection apparatus comprising: rotation speed information detection means, rotation acceleration information calculation means, resonance frequency estimate means for time-series estimating a torsional resonance frequency of the rotation speed information, correlation calculation means for, regarding front and rear right wheels and front and rear left wheels, respectively calculating time series correlations of the rotation acceleration information, and judgment means for judging a decrease in pressure of the tires based on the estimated torsional resonance frequency. In a case where the correlations exceed predetermined threshold values, the resonance frequency estimate means takes that a periodic noise from a road surface is generated in the vicinity of the torsional resonance frequency and stops estimating the torsional resonance frequency of the front and rear wheels of the side exceeding the threshold value..
Sumitomo Rubber Industries, Ltd.


11/26/15
20150338761 

Optical scanning device and image forming apparatus


An optical scanning device includes a light source configured to emit a light beam; a rotary deflector configured to perform optical scanning by reflecting and deflecting the light beam emitted from the light source while rotating; an optical system forming member configured to form a path of the light beam; and a resonator having a resonance frequency corresponding to a sound generated by rotational drive of the rotary deflector. The rotary deflector is installed in a closed space.
Ricoh Company, Limited


11/26/15
20150338437 

Intermittent contact resonance atomic force microscope and process for intermittent contact resonance atomic force microscopy


An intermittent contact atomic force microscope includes: a cantilever configured to receive a contact resonance modulation; a sample disposed proximate to the cantilever; a contact resonance modulator in communication with the cantilever and configured to provide the contact resonance modulation to the cantilever; and a scan modulator in mechanical communication with the sample to provide a scan modulation to the sample. Also disclosed is a process for performing intermittent contact atomic force microscopy, the process includes: providing a dual modulation microscope including: a cantilever configured to receive a contact resonance modulation; a sample disposed proximate to the cantilever; a contact resonance modulator in communication with the cantilever and configured to provide the contact resonance modulation to the cantilever; and a scan modulator in mechanical communication with the sample to provide a scan modulation to the sample; subjecting the cantilever to the contact resonance modulation; modulating the cantilever at a contact resonance frequency; subjecting the sample to the scan modulation; and modulating the sample at a scan modulation frequency to perform intermittent contact atomic force microscopy..
National Institute Of Standards And Technology


11/26/15
20150336207 

Electronic communications device with antenna and electromagnetic shield


An electronic communications device includes a body of semiconductor material with an integrated electronic circuit, an inductive element, and a capacitive element. The capacitive element is formed by a first electrode and a second electrode positioned between the inductive element and the integrated electronic circuit.
Stmicroelectronics S.r.l.


11/19/15
20150333539 

Wireless power transmission system


[organization] a power transmission device has a first and a second electrode (a center electrode 311 and an annular electrode 312) each having a rotationally symmetrical shape with respect to a common center axis, a first and a second connection line (connection lines 315, 316), and a first inductor to (inductor 313, 314). A power reception device has a third and a fourth electrode (center electrode 321 and annular electrode 322) each having a rotationally symmetrical shape with respect to a common center axis, a third and a fourth connection line (connection lines 325, 326), and a second inductor.

11/19/15
20150333538 

Wireless power transmission system


[organization] a power transmission device has a first and a second electrode (111, 112), a first and a second connection line (115, 116), and a first inductor (113, 114). A power reception device has a third and a fourth electrode (121, 122), a third and a fourth connection line (125, 126), and a second inductor (123, 124).

11/19/15
20150331008 

Piezoelectric-based multiple impact sensors and their electronic circuitry


An electrical energy harvesting device for harvesting electrical energy from a pulsed impact loading event. The device including: a piezoelectric element configured to be loaded and unloaded to a first load level by the pulsed impact loading event; and a first inductor coupled to the piezoelectric element configured to be loaded and unloaded to a second load level by the pulsed impact loading event, wherein the piezoelectric element and the first inductor together operate as a first inductor/capacitor (lc) resonant circuit having a first resonance frequency and wherein the loading of the first inductor lags in time the loading of the piezoelectric element..
Omnitek Partners Llc


11/19/15
20150330785 

Angular velocity sensor and manufacturing method therefor


One or more vibration plate layers of a diaphragm part are formed by a thin film forming technique. When a resonance frequency in a resonance vibration mode calculated from dimensions of a structure of an angular velocity sensor and an elastic parameter of a material thereof is defined as f kilohertz, a mass of a weight part is defined as m milligrams, a circumference of the diaphragm part is defined as r meters, a stress applied to a piezoelectric layer is defined as σp pascals, a thickness thereof is defined as tp meters, a stress applied to an n-th layer from the weight part in a vibration plate portion constituted by a plurality of layers including a lower electrode and the vibration plate layers is defined as τn pascals, and a thickness thereof is defined as tn meters (where n is a natural number), teff expressed by teff=r(σptp+Σσntn)/m satisfies {(−0.36f2+210)/33}≦teff≦{(0.44f2+210)/33}..
Fujifilm Corporation


11/19/15
20150330466 

Electric parking brake system


According to an electric parking brake system, a power loss of when detecting a position or a displacement of a plunger is reduced without arranging a sensor, and a mounting space is also reduced. A resonance capacitor is connected to a coil of a solenoid to form a resonance circuit, and a drive current superimposed with a resonance frequency is input to the solenoid forming the resonance circuit.
Ntn Corporation


11/19/15
20150328969 

Inverted type liquid sealed mount


Annular liquid chamber resonance in an inverted type liquid sealed mount is controlled without using flow resistance. In an engine mount including a secondary liquid chamber located in an upper position, a primary liquid chamber located in a lower position, a main body section of an insulator projecting upwardly in substantially a chevron shape, and an annular liquid chamber formed around the main body section, a control projection is provided on an outside wall of the main body section to project upwardly and configured to produce elastic body resonance in the vicinity of a resonance frequency of annular liquid chamber resonance.
Yamashita Rubber Kabushiki Kaisha


11/12/15
20150323466 

Cavity opto-mechanical sensor system


A mass sensor system including multiple fabry-perot microcavities connected in parallel by multiple waveguides. Each of the mass sensors includes a microbridge having a fundamental resonance frequency, and a movable reflective mirror etched into the microbridge; a fixed reflective mirror etched in a substrate, the fixed reflective mirror being fixed to the substrate in a region spaced apart from the movable reflective mirror; and an optical waveguide etched in the substrate that connects the movable mirror and the fixed mirror forming the fabry-perot microcavity interferometer.
The Government Of The United States Of America, As Represented By The Secretary Of The Navy


11/12/15
20150321691 

Compensation control apparatus of motor driven power steering system


A compensation control apparatus of motor driven power steering may include: a torque sensor for measuring a driver's column torque inputted to a steering wheel; and a controller for generating an assist torque based on the column torque measured through the torque sensor, compensating for a phase margin in a low-frequency band for the generated assist torque, detecting a resonance frequency to attenuate resonance, and outputting a final assist torque.. .
Hyundai Mobis Co., Ltd.


11/05/15
20150319523 

Speaker system


When an amplitude of vibration of a first diaphragm of a first speaker unit vibrated by applying a first and a correction ac signals having a frequency in a first frequency band to the first speaker unit is equalized to that of a second diaphragm of a second speaker unit vibrated by applying a second ac signal being the same as the first ac signal to the second speaker unit being the same as the first speaker unit attached to a closed type cabinet having the same internal volume as a speaker cabinet, a sound pressure reproduced by the first diaphragm is equal to or lower than that reproduced by the second diaphragm when a third ac signal having a frequency of a minimum resonance frequency or higher of the closed type cabinet determined by the internal volume thereof and the caliber of the second speaker unit is applied to the second speaker unit.. .
Panasonic Intellectual Property Management Co., Ltd.


11/05/15
20150319517 

Loudspeaker system with improved sound


A loudspeaker device is presented which includes a zeolite material comprising zeolite particles having a silicon to aluminum mass ratio of at least 200. For an increased pore fraction of pores with a diameter in a range between 0.7 micrometer and 30 micrometer shows an increased shift of the resonance frequency down to lower frequencies has been observed..
Nanoscape Ag


11/05/15
20150318900 

Wireless power transfer system, power receiver, and wireless power transfer method


A power receiver includes a resonance coil, an oscillation unit, a communication unit, and a control unit. The resonance coil is configured to wirelessly receive power from a power source using magnetic field resonance or electric field resonance, the oscillation unit is configured to output a voltage which oscillates at a predetermined frequency, and the communication unit is configured to communicate with the power source.
Fujitsu Limited


11/05/15
20150316762 

Apparatus and driving and measuring a mems mirror system


The present invention relates to an apparatus for driving and measuring a mems minor system, the mems minor system having a mirror pivotable around an axis by a driving coil and exhibiting a resonance frequency, having a pulse generator and a measuring unit, each electrically connected to the coil. The pulse generator is preferably configured to feed a modulated pulse signal, comprised of pulses separated by intervals and having a modulation frequency different from the resonance frequency, to the coil.
Trilite Technologies Gmbh


11/05/15
20150314619 

Printing apparatus and motor control method


An embodiment of this invention is directed to implementing motor control of suppressing the influence of the cogging of a motor while minimizing preliminary detection processing. According to this embodiment, a printing apparatus includes an acceleration sensor for detecting the acceleration of a moving carriage, and a control unit configured to control drive of the motor to suppress the influence of the cogging of the motor based on the detection by the acceleration sensor.
Canon Kabushiki Kaisha


11/05/15
20150314263 

Loudspeaker system with improved sound


A loudspeaker device is presented which includes a zeolite material comprising zeolite particles having a silicon to aluminum mass ratio of at least 200. For an increased pore fraction of pores with a diameter in a range between 0.7 micrometer and 30 micrometer shows an increased shift of the resonance frequency down to lower frequencies has been observed..
Nanoscape Ag


10/29/15
20150312684 

Transceiver for a hearing aid and a operating such a transceiver


A frequency-shift-keying (fsk) transceiver for use in a hearing aid system and having a resonant circuit comprising a transceiver inductance (l1), said resonant circuit having a resonance frequency, and a transfer function where gain and phase are frequency dependent, wherein the transceiver comprises an fsk modulator receiving a data stream, and in response thereto outputting an fsk modulated signal to the resonant circuit for wirelessly transmission. The transceiver includes a controller monitoring the data stream received by the fsk modulator, and a phase equalizer unit controlled by the controller for substantially equalizing the phase distortion introduced by the frequency dependent resonant circuit.
Widex A/s


10/29/15
20150311880 

Electric power transmission device and electric power transmission method


An electric power transmission device characterized in that the electric power transmission device includes a power transmitting unit which wirelessly transmits an electric power and a power receiving unit which receives the electric power, the power transmitting unit and the power receiving unit include a coil for electric power transmission and an inclusion unit made of a dielectric material covering the coil for electric power transmission, at least one of the power transmitting unit and the power receiving unit includes an impedance adjustment unit which varies the impedance thereof, and the electric power is transmitted at a resonance frequency determined by an impedance of the power transmitting unit, an impedance of the power receiving unit, and an impedance of the conducting medium.. .
Nec Corporation


10/29/15
20150308990 

System and analyzing a gas


A gas analysis system includes a fluidic channel for flow of a gas to be analyzed, a detector in the channel and adapted for measuring interactions of the gas with the detector, the detector including a resonator of the electromechanical nanosystem (nems) type and a heating system for heating a part of the detector, an actuation device for vibrationally actuating the resonator according to an excitation signal applied to an input of the detector, a detection device adapted for providing an output electric signal representative of the vibrations of the resonator, a read-out device connected to an input of the detector and configured for simultaneously measuring, from the output signal of the detector, the change in resonance frequency and the change in amplitude of the vibrations at the resonance frequency of the resonator, and a processing device configured for determining from the changes a fluidic characteristic of the gas.. .
Apix Analytics


10/29/15
20150308829 

Microelectromechanical gyroscope with open loop reading device and control method


A microelectromechanical gyroscope that includes a first mass oscillatable according to a first axis; an inertial sensor, including a second mass, drawn along by the first mass and constrained so as to oscillate according to a second axis, in response to a rotation of the gyroscope; a driving device coupled to the first mass so as to form a feedback control loop and configured to maintain the first mass in oscillation at a resonance frequency; and an open-loop reading device coupled to the inertial sensor for detecting displacements of the second mass according to the second axis. The driving device includes a read signal generator for supplying to the inertial sensor at least one read signal having the form of a square-wave signal of amplitude that sinusoidally varies with the resonance frequency..
Stmicroelectronics S.r.i.


10/29/15
20150306720 

Control device for working device, working device, control program for working device, control working device, and working method


An nc unit calculates the phase difference in chatter vibration during working on the basis of detection result of sound produced by working a workpiece by an end mill, increases the number of rotations of the end mill by a predetermined number if the phase difference is smaller than a first phase difference threshold, and decreases the number of rotations of the end mill by a predetermined number if the phase difference is larger than a second phase difference threshold. Further, if the phase difference is between the first phase difference threshold and the second phase difference threshold, the nc unit finds the resonance frequency of a machine tool by multiplying a chatter frequency by a correction factor that changes according to the chatter frequency, and calculates the number of rotations of the end mill on the basis of the resonance frequency, to obtain stable working with suppressed chatter vibration..
Mitsubishi Heavy Industries , Ltd.


10/22/15
20150303574 

Nonplanar antenna embedded package structure and manufacturing the same


A nonplanar antenna embedded package structure and a method of manufacturing the same are introduced. The structure includes a nonplanar antenna component.
National Chung Shan Institute Of Science And Technology


10/22/15
20150300999 

Measurement system including a network of nanoelectromechanical system resonators


The invention relates to a measurement system including a network of nanoelectromechanical system (nems) resonators, characterized in that: each one of said resonators includes: an electrostatic activation device capable of generating a vibration of a beam exposed to said excitation signal, at least one piezoresistive stress gauge made of a doped semiconducting material, extending from the beam so as to detect a movement of said beam, the variation in the electrical resistance of said at least one gauge supplying an output signal; said network includes at least two groups of resonators, each group including at least two resonators having an identical empty resonance frequency, each group of resonators having an empty resonance frequency different from that of each other group; the resonators forming each group are connected in parallel; the groups of resonators forming said network are connected in parallel; said system includes a reading device designed to supply an excitation signal at the network input and to determine the resonance frequency of a group of resonators which is selected by injecting, into said excitation signal, a frequency component corresponding to the empty resonance frequency of each selected group of resonators, and by identifying, in the output signal of the network, a resonance frequency component of the selected group of resonators.. .
Apix Analytics


10/15/15
20150295697 

Multiplexer


A multiplexer includes: a first chip that has a first filter and a resonator, the first filter being connected between a common terminal and a first terminal, a first end of the resonator being connected to the common terminal not via the first filter; and a second chip that has a second filter, the second filter being connected between a second end of the resonator and a second terminal and having a pass band lower than that of the first filter, a resonance frequency of the resonator being higher than the pass band of the second filter.. .

10/15/15
20150293456 

Droplet generator, euv radiation source, lithographic apparatus, generating droplets and device manufacturing method


A droplet generator, for an euv radiation source, comprises: a capillary in which, in use, molten material flows; an actuator configured to modulate a pressure inside the capillary; and a controller configured to drive the actuator at a driving frequency; wherein the droplet generator is arranged such that, in use, the driving frequency is equal or about equal to a main resonance frequency of the molten material in the capillary.. .

10/15/15
20150293189 

Transmit/receive switching circuitry with improved radio frequency isolation


A transmit/receive switching circuitry (40; 48) for a magnetic resonance radio frequency antenna (m) for use in an magnetic resonance imaging system (10), the transmit/receive switching circuitry comprising: -a radio frequency input transmission line (tx) provided for transmitting radio frequency power to the magnetic resonance radio frequency antenna (m) and a radio frequency output transmission line (rx) provided for transferring away magnetic resonance signals received by the magnetic resonance radio frequency antenna (m) at a magnetic resonance frequency from the magnetic resonance radio frequency antenna (m);—a parallel resonant circuit (42) with a resonance frequency that is substantially equal to the magnetic resonance frequency, and that is connected in parallel to the magnetic resonance radio frequency antenna (m) with regard to the radio frequency input transmission line (tx),—a series resonant circuit (44) with a resonance frequency that is substantially equal to the magnetic resonance frequency,and that is connected in series between the radio frequency input transmission line (tx) and the radio frequency output transmission line (rx); for providing improved radio frequency isolation between the radio frequency input transmission line (tx) and the radio frequency output transmission line (rx); a method for generating consecutive rf transmit periods and rf receive periods of the magnetic resonance imaging system (10) using such a transmit/receive switching circuitry (40; 48); a switching control unit (32) having at least one such transmit/receive switching circuitry (40; 48), for use in the magnetic resonance imaging system (10); a software module (26) for controlling an execution of such a method.. .

10/08/15
20150288066 

Multiband antenna and wireless device


A multiband antenna includes a feeding element connected to a feeding point, a radiating element functioning as a radiating conductor, the radiating element being positioned apart from the feeding element and fed with electric power by electromagnetically coupling to the feeding element, a ground plane, and a non-feeding element being positioned close to the radiating element and connected to the ground plane via a reactance element. The reactance element has a reactance that causes the multiband antenna to match with a frequency other than a resonance frequency of a resonance mode of the radiating element..

10/08/15
20150288045 

Millimeter waveband filter


To provide a millimeter waveband filter which can vary a resonance frequency in a wider band without causing deterioration of resonance characteristics due to leakage of electromagnetic waves. In a millimeter waveband filter 20, a first waveguides 22 and a second waveguide 24 are relatively moved to vary the interval between the electric wave half mirrors 30a and 30b, and the resonance frequency of a resonator formed between the mirrors varies to selectively transmit resonance frequency components.

10/08/15
20150285658 

Utilization of mechanical quadrature in silicon mems vibratory gyroscope to increase and expand the long term in-run bias stability


A method for self-compensation of the bias draft of the quadrature signal of a gyroscope. The method is a combination of a variety of sub-methods, which can include quadrature compensation, can be used to achieve the highest possible stability.

10/01/15
20150280688 

Acoustic resonator device including trench for providing stress relief


An microelectronic device includes a substrate, a piezoelectric component formed over the substrate, at least one trench formed in the substrate. The piezoelectric component has a corresponding resonance frequency.
Avago Technologies General Ip (singapore) Pte. Ltd.


10/01/15
20150280454 

Wireless power supply linear motion type robot


A wireless power supply apparatus using magnetic resonance is provided for a linear motion type robot. In the apparatus, a high-frequency signal for foreign matter detection is generated.
Denso Corporation


10/01/15
20150280453 

Power reception apparatus, power transmission apparatus, non-contact power supply system, power reception method, and power transmission method


A power reception apparatus includes a power receiving circuit to be connected to a power reception side resonance circuit including a power reception side coil and a power reception side capacitance, for generating an output power based on power received by the power reception side coil utilizing magnetic resonance, a changing/short-circuiting circuit configured to change a resonance frequency of the power reception side resonance circuit from a reference frequency that is the resonance frequency when receiving the power, or to short-circuit the power reception side coil, before receiving the power.. .
Rohm Co., Ltd.


10/01/15
20150280298 

Tunable band-pass filter


The present invention comprises: a conductive chassis having a cavity resonator; a conductive cover to cover the cavity resonator; a resonant element arranged in the cavity resonator, one end of the resonant element being connected with the chassis and the other end being open end; and a movable conductor arranged in a space between the open end of the resonant element and the conductive cover. As a result, a tunable band-pass filter which is inexpensive and of a simple structure and which can change a resonance frequency of a cavity resonator and the coupling amount between cavity resonators easily is realized..
Nec Corporation


10/01/15
20150276903 

Magnetic resonance imaging apparatus


A quantitative image (resonance frequency map) of a resonance frequency difference is obtained using a high-speed phase compensated pulse sequence of a gradient echo (ge) system. A signal function of the pulse sequence used when obtaining the resonance frequency map is generated by a numerical simulation.
Hitachi, Ltd.


10/01/15
20150276404 

Physical quantity detection circuit, physical quantity detecting device, electronic apparatus, and moving object


A physical quantity detection circuit includes a filter circuit, and a synchronous detection circuit that is provided at a downstream of the filter circuit and detects a signal in response to a physical quantity contained in an output signal of a vibrating element based on a drive signal for driving the vibrating element. The filter circuit has a cutoff frequency between a resonance frequency in a drive mode and a resonance frequency in a detection mode of the vibrating element and contains the resonance frequency in the drive mode in a passband..
Seiko Epson Corporation


09/24/15
20150271592 

Loudspeaker system with improved sound


A loudspeaker device is presented which includes a zeolite material comprising zeolite particles having a silicon to aluminum mass ratio of at least 200. For an increased pore fraction of pores with a diameter in a range between 0.7 micrometer and 30 micrometer shows an increased shift of the resonance frequency down to lower frequencies has been observed..
Knowles Ipc (m) Sdn. Bhd.


09/24/15
20150271580 

Loudspeaker system with improved sound


A loudspeaker device is presented which includes a zeolite material comprising zeolite particles having a silicon to aluminum mass ratio of at least 200. For an increased pore fraction of pores with a diameter in a range between 0.7 micrometer and 30 micrometer shows an increased shift of the resonance frequency down to lower frequencies has been observed..
Knowles Ipc (m) Sdn. Bhd.


09/24/15
20150270716 

Multi frequency power driver for a wireless power transfer system


A wireless power transfer system comprises a plurality of receivers (310, 320, 330) operating at a different resonance frequency from each other, wherein each of the plurality of receivers includes at least a load (311, 321, 331); a driver (300) that generates a power signal that encompasses a plurality of driving signals (411, 412, 413) having different frequencies that substantially match the different resonance frequencies of the plurality of receivers; and a pair of transmitter electrodes (304, 305) connected to the driver and wirelessly coupled to each of the plurality of receivers, wherein the power signal generated by the driver is wirelessly transferred from the pair of transmitter electrodes to each of the plurality of receivers to power its respective load, wherein a load of a receiver of each of the plurality of receivers is powered when the frequency of one of plurality of driving signals substantially matches a resonance frequency of the receiver.. .
Koninklijke Philips N.v.


09/17/15
20150263420 

Devices and methods for reducing interference between closely collocated antennas


Devices and methods for reducing interference between closely collocated antennas working at the same or adjacent frequencies are disclosed. According to one embodiment, the antenna array comprises a plurality of antennas for transmitting signals from and receiving signals to a plurality of transceivers respectively, and the device comprises a plurality of resonators; a first set of ports, each of which is connected to a respective one of the plurality of transceivers; and a second set of ports, each of which is connected to a respective one of the plurality of antennas; wherein each of the transceivers and the antennas is connected to a respective one of the resonators, and coupling coefficients among the resonators as well as a resonance frequency of each of the resonators are configured so that a desired isolation among the first set of ports and a desired matching at each of the first set of ports are obtained..
The Chinese University Of Hong Kong


09/17/15
20150263399 

Millimeter waveband filter


In a millimeter waveband filter, electric wave half mirrors are provided in transmission lines of a first waveguide configured to allow electromagnetic waves in a predetermined frequency range of a millimeter waveband to propagate in a te10 mode and a second waveguide connected to the first waveguide in a state where one end of the second waveguide is inserted into the first waveguide, and the waveguides are relatively moved to vary the interval between the electric wave half mirrors, thereby changing a resonance frequency. The first waveguide is a square waveguide, and the second waveguide is a ridge waveguide in which the outside thereof is a rectangular shape at a predetermined interval with respect to the inside of the first waveguide and a sectional shape of a transmission line has a central portion having a height smaller than both side portions..
Anritsu Corporation


09/17/15
20150262793 

Plasma processing apparatus


A resonance frequency can be adjusted by shifting the resonance frequency without reducing an impedance function or a withstanding voltage characteristic against a high frequency noise, when blocking, by using a multiple parallel resonance characteristic of a distributed constant line, the high frequency noise introduced into a power feed line from an electrical member other than a high frequency electrode within a processing vessel. Comb teeth m of a comb-teeth member 114 are inserted into winding gaps of air core coils 104(1) and 104(2).
Tokyo Electron Limited


09/17/15
20150260812 

Enhanced nuclear quadrupole resonance and ground penetrating radar using metamaterial antenna


A method and system for enhanced nqr or gpr include a metamaterial antenna configured to both transmit and receive a magnetic field focused at a near-field distance separated from the antenna at a corresponding antenna frequency corresponding to a nuclear quadrupole resonance frequency of an atom in a target material.. .
Lockheed Martin Corporation


09/17/15
20150260133 

Diaphragm damper


The objective of the present invention is to provide a diaphragm damper with which the amount of volume change due to the resonance frequency and pressure can be set freely and the performance of the diaphragm damper can be optimized, without changing the attachment structure for a conventional metal diaphragm and without obstructing the space where fuel flows in a fuel chamber. To this end, this diaphragm damper, wherein a high-pressure gas is enclosed in a high-pressure chamber formed by two disk-shaped metal diaphragms the outer circumferential portions of which have been joined together, is constructed such that rubber-like elastic members are arranged within the high-pressure chamber..
Eagle Industry Co., Ltd.


09/10/15
20150255874 

Conical antenna


A conical antenna includes a chassis, a main radiator and a ring resonator. A central of the chassis defines a via for feeding electromagnetic signals.
Hon Hai Precision Industry Co., Ltd.


09/10/15
20150255844 

Harmonic oscillator and cavity filter and electromagnetic wave device thereof


The present application relates to a harmonic oscillator. The harmonic oscillator includes a dielectric body and at least one responding unit attached onto a surface of the dielectric body, where the responding unit is a conductive structure having a geometrical pattern.
Kuang-chi Innovative Technology Ltd.


09/10/15
20150253393 

Birdcage body coil for parallel transmit mri


The invention relates to a birdcage resonator (109) for mr imaging, which birdcage resonator (109) surrounds an examination volume and comprises: a plurality of rungs (1-16) arranged in parallel to a longitudinal axis of the examination volume, each rung (1-16) comprising a rung capacitance (crung),—two end rings arranged at the opposite ends of the rungs (1-16), each end ring comprising a plurality of ring capacitances (cring), wherein each ring capacitance (cring) interconnects a pair of adjacent rungs (1-16), each pair of adjacent rungs and interconnecting ring capacitances (cring) forming a mesh of the birdcage resonator. The invention proposes that the ring capacitances (cring) and the rung capacitances (cring) are proportioned so that:—the birdcage resonator (109) has a plurality of resonant modes that are tuned to the same resonance frequency, and the meshes of the birdcage resonator (109) are electromagnetically coupled.
Koninklijke Philips N.v.


09/10/15
20150253354 

Method for measuring surface potentials on polarized devices


A method for measuring the surface potential of a polarized sample includes: measuring the topographic profile of the sample by scanning its surface with a tapered tip connected to a micro-lever activated at the resonance frequency of same by a piezoelectric actuator; placing the tapered tip a constant distance away from the topographic profile of the surface obtained during the previous step; and measuring the electrostatic potential of the surface. The sample is not polarized during the step of measuring the topographic profile.
Universite De Reims Champagne


09/03/15
20150249888 

Amplifier and frequency response correction method


The invention relates to amplifiers of audio power which operate with loudspeaker systems. The main technical result is significant extension of the reproducible frequency range without reduction of the loudspeaker system fundamental resonance frequency.

09/03/15
20150249456 

Mercury trapped ion frequency standard for ultra-stable reference applications


An atomic clock including an ion trap assembly, a c-field coil positioned for generating a first magnetic field in the interrogation region of the ion trap assembly, a compensation coil positioned for generating a second magnetic field in the interrogation region, wherein the combination of the first and second magnetic fields produces an ion number-dependent second order zeeman shift (zeeman shift) in the resonance frequency that is opposite in sign to an ion number-dependent second order doppler shift (doppler shift) in the resonance frequency, the c-field coil has a radius selected using data indicating how changes in the radius affect an ion-number-dependent shift in the resonance frequency, such that a difference in magnitude between the doppler shift and the zeeman shift is controlled or reduced, and the resonance frequency, including the adjustment by the zeeman shift, is used to obtain the frequency standard.. .
California Institute Of Technology


09/03/15
20150247908 

Non-invasive temperature mapping using temperature-responsive water saturation shift referencing (t-wassr) mri


An embodiment in accordance with the present invention provides a method of non-invasively detecting and imaging temperature or temperature changes by assessing the temperature induced shifts in the saturation spectrum of water using mri, namely saturation shift referencing. This procedure includes the mri procedures to assess water saturation spectrum and the data processing steps to determine the temperature induced shifts of water resonance frequency and consequently to estimate the temperature change.
Kennedy Kreiger Institute, Inc.


08/27/15
20150244347 

Bulk acoustic wave resonator having doped piezoelectric layer


In accordance with a representative embodiment, a bulk acoustic wave (baw) resonator comprises: a first electrode having a first electrode thickness; a second electrode having a second electrode thickness; and a piezoelectric layer having a piezoelectric layer thickness and being disposed between the first and second electrodes, the piezoelectric layer comprising a piezoelectric material doped with at least one rare earth element. For a particular acoustic coupling coefficient (kt2) value and a series resonance frequency (fs) of the baw resonator, the first electrode thickness and the second electrode thickness are each greater than a thickness of a first electrode and a thickness of a second electrode of a baw resonator comprising an undoped piezoelectric layer..
Avago Technologies General Ip (singapore) Pte. Ltd


08/27/15
20150241470 

Methods, systems, and computer readable media for dual resonance frequency enhanced electrostatic force microscopy


The subject matter described herein includes methods, systems, and computer readable media for dual resonance frequency enhanced electrostatic force microscopy. One method includes applying an alternating current (ac) bias and a direct current (dc) bias to an atomic force microscopy cantilever, wherein the ac bias has a frequency greater than a fundamental resonance frequency of the cantilever.
The University Of North Carolina At Chapel Hill


08/27/15
20150241305 

System dedicated to monitoring the physical and/or analogue parameters of the parts of an engine


The invention concerns a system for monitoring physical and/or analogue parameters relative to the parts of an engine, said system comprising at least one electronic control unit (30a) configured to call up data, via at least one antenna (20a), from a surface acoustic wave sensor located on one of said parts, characterised by the fact that:—the engine (m) is compartmentalized, each compartment (ma, . .
Controle Mesure Regulation


08/27/15
20150239353 

Method for controlling the charging of a battery of an electric vehicle in a non-contact charging system


A method for controlling charging of a battery of an electric drive motor vehicle or a hybrid motor vehicle, in a non-contact charging system wherein a power generator including a direct current source followed by an inverter feeds a load including an inductor arranged in series with the inverter, the method including: controlling the inverter at a working frequency slaved to a load resonance frequency by transmission of first and second pulse-width modulation command signals respectively to first and second switching arms of the inverter; and performing a closed-loop regulation on an intensity of a supply current of the inverter, a supply current set value being defined according to a maximum current that can be supplied by the direct current source.. .
Renault S.a.s.


08/20/15
20150237442 

Digital microphone and position-to-frequency converter


A digital microphone includes: a cavity resonator operatable in a micrometer, millimeter, or electromagnetic waveband, the cavity resonator having a metal wall including a conductive membrane 32 that vibrates in response to incident acoustic waves and converts the shift of the membrane 32 into a resonance frequency of the cavity resonator; an fm-signal generator that modulates the resonance frequency of the cavity resonator in response to the shift of the membrane 32 and outputs fm signals from the metal wall other than the membrane; and a ΔΣ-modulated-signal generator that generates ΔΣ-modulated signals from the fm signals. The fm-signal generator includes a slot 36, a micro-strip line 38, and a negative resistive element 40.
National University Corporation University Of Toyama


08/20/15
20150235761 

Antenna coil unit


The antenna coil unit includes a main coil and an auxiliary coil electrically insulated from the main coil, the auxiliary coil being arranged at a position in which an induction current is produced by a magnetic field produced by an electric current flowing through the main coil. The auxiliary coil is configured in a state in which a frequency deviating by a predefined amount in a predefined direction from a target frequency predefined within a harmonic component of the fundamental component of an electromagnetic wave produced by the electric current flowing through the main coil is taken as a resonance frequency.
Equos Research Co., Ltd


08/20/15
20150234211 

Free-space laser tuning of optical microcavities


Methods and apparatuses for resonance tuning of microcavities are provided. An apparatus comprises a whispering gallery mode optical microcavity characterized by at least one resonance frequency; optical components configured to evanescently couple a probe laser beam into the microcavity; an absorber element in thermal contact with the microcavity; and optical components configured to illuminate the absorber element with a free space pump light beam, wherein the absorber element is configured to absorb energy from the free space pump light beam, thereby generating heat, and to transfer the heat to the microcavity, thereby inducing a shift in the at least one resonance frequency.
Wisconsin Alumni Research Foundation


08/20/15
20150233443 

Hydraulic vibration-damping support


Controllable hydraulic vibration-damping support comprising a main hydraulic circuit comprising a working chamber, a compensation chamber, and a first constricted passageway, and an auxiliary hydraulic chamber separated from the working chamber by a decoupling valve and communicating with the main hydraulic circuit by means of a second constricted passageway having a resonance frequency of less than 5 hz. The auxiliary chamber is separated from a pneumatic chamber by a movable wall, and a control device is provided for selectively either connecting the pneumatic chamber to the open air, or bleeding air from the pneumatic chamber..
Hutchinson


08/20/15
20150232086 

Smoothing hybrid vehicle engine shutdown


A method of smoothing hybrid vehicle engine shutdown. A powered and rotating electric machine is used to slow deceleration of an unpowered and rotating engine by transferring torque through a clutch from the machine to the unpowered engine.
Ford Global Technologies, Llc


08/13/15
20150228830 

Solar element comprising resonator for application in energetics


A solar element including a basic resonator arranged on a dielectric structure that is constituted by an area (5) with minimum electromagnetic damping, whose upper plane forms the plane of incidence (3). The area (5) with minimum electromagnetic damping is transparent in relation to the incident electromagnetic wave; the area is limited by the boundaries (6) of variations in material properties, and at least one 2d-3d resonator (4) is surrounded by the dielectric (10) and configured in the dielectric structure.
VysokÉ Uceni TechnickÉ V BrnÉ




Resonance Frequency topics: Resonance Frequency, Circuit Switch, Addressing, Signal Processing, Low Frequency, Ultrasonic, Transducer, Piezoelectric, Shift Module, Frequency Band, Blood Pressure, Wireless Power, Circuit Switching, Fault Detection, Ground Fault Detection Circuit

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