Class 331/155 - With optical, piezoelectric or acoustic coupling means

Subclass of Class 331 - Oscillators
Definition: Subject matter wherein the mechanical resonator is coupled
No. of applications: 21
Last issue date: 05/24/2012

Application No.	Application Title	Issue Date
20120126908	PIEZOELECTRIC VIBRATING REED, PIEZOELECTRIC VIBRATOR, OSCILLATOR, ELECTRONIC DEVICE, RADIO-CONTROLLED CLOCK, AND METHOD FOR MANUFACTURING PIEZOELECTRIC VIBRATING REED This invention is provided a piezoelectric vibrating reed which is capable of decreasing variation in the amount of etching reside as much as possible and suppressing influence of vibration loss on the vibration characteristics as much as possible. A piezoelectric vibra...	05/24/2012
20120126907	OSCILLATION CIRCUIT An oscillation circuit has a first inverter connected to an external piezoelectric resonator, a first feedback resistor disposed between input/output terminals of the first inverter, first/second variable capacitive elements connected to input/output of the first invert...	05/24/2012
20120105164	PIEZOELECTRIC OSCILLATION CIRCUIT AND TEMPERATURE-CONSTANT PIEZOELECTRIC OSCILLATOR A piezoelectric oscillation circuit includes: a Colpitts oscillation circuit; a first circuit unit which includes a circuit having a variable-capacity capacitor for controlling an oscillation frequency; a second circuit unit which includes a circuit having a resistance;...	05/03/2012
20120038431	MICROMECHANICAL RESONATOR ARRAY AND METHOD FOR MANUFACTURING THEREOF The invention relates to a microelectromechanical resonators and a method of manufacturing thereof. The resonator comprises at least two resonator elements made from semiconductor material, the resonator elements being arranged laterally with respect to each other as an...	02/16/2012
20110298554	METHOD OF ADJUSTMENT DURING MANUFACTURE OF A CIRCUIT HAVING A CAPACITOR A method of adjustment during manufacture of a capacitance of a capacitor supported by a substrate, the method including the steps of: a) forming a first electrode parallel to the surface of the substrate and covering it with a dielectric layer; b) forming, on a first p...	12/08/2011
20110234328	CONSTANT-TEMPERATURE PIEZOELECTRIC OSCILLATOR AND METHOD OF MANUFACTURING THE SAME A constant-temperature piezoelectric oscillator includes: a piezoelectric vibrator; an oscillation circuit; a frequency voltage control circuit; a temperature control section; and an arithmetic circuit, wherein the temperature control section includes a temperature-sens...	09/29/2011
20110199160	SURFACE ACOUSTIC WAVE RESONATOR, SURFACE ACOUSTIC WAVE OSCILLATOR, AND SURFACE ACOUSTIC WAVE MODULE UNIT It is possible to reduce the size of a surface acoustic wave (SAW) resonator by enhancing a Q value. In a SAW resonator in which an IDT having electrode fingers for exciting SAW is disposed on a crystal substrate, the IDT includes a first region disposed at the center o...	08/18/2011
20110187470	VIBRATING MEMBER, VIBRATING DEVICE, AND ELECTRONIC APPARATUS A vibrating member includes a base portion, a plurality of vibrating arms which extend from one end portion of the base portion, are provided in parallel in a first direction, and extend in a second direction perpendicular to the first direction, a linking portion which...	08/04/2011
20110090020	Voltage Controlled SAW Oscillator with Phase Shifter An oscillator which, in one embodiment, is a voltage controlled surface acoustic wave oscillator including at least a surface acoustic wave filter and a voltage controlled phase shifter. In one embodiment, the phase shifter includes at least one low pass circuit and two...	04/21/2011
20110074515	PIEZOELECTRIC RESONATOR, OSCILLATOR AND OSCILLATOR PACKAGE Provided is a piezoelectric resonator having a structure in which the piezoelectric resonator chip is mounted on a silicon substrate without deteriorating a characteristic. The piezoelectric resonator includes a silicon substrate (2), a metal film (3) form...	03/31/2011
20110025426	FREQUENCY SELECTION AND AMPLIFYING DEVICE A frequency selection device comprises an oscillator, which comprises a resonator mass which is connected by a spring arrangement to a substrate, and a piezoresistive element for controlling oscillation of the resonator mass, which comprises a piezoresistive element con...	02/03/2011
20100288014	Gas sensor and method thereof A gas sensor comprises a first surface-acoustic-wave device, at least one further surface-acoustic-wave device, and a control device. The first surface-acoustic-wave device includes a piezoelectric substrate, a pair of transducers and an external circuit. The pair of tr...	11/18/2010
20100264998	APPARATUS AND METHOD FOR CHARGE TRANSFER The invention relates to an apparatus and a method for charge transfer, wherein a charge transfer apparatus (10) in particular comprises: an oscillation generator (20) for production of acoustic oscillations; at least two mutually separated electrode eleme...	10/21/2010
20100253441	VARIABLE INDUCTOR A variable simulated inductor comprises an integrator connected to receive the voltage across the input to the circuit. The output of the inductor is connected to a control terminal of a transconductor connected across the input of the circuit. The gain of the transcond...	10/07/2010
20100079213	Oscillation circuit and method of controlling same Disclosed is an oscillator in which current consumption relating to oscillation is reduced. The oscillator comprises: an amplifier to an input and output of which a piezoelectric oscillator and a feedback resistor are connected in parallel, and which is constituted by a...	04/01/2010
20090023400	PIEZOELECTRIC OSCILLATOR AND TRANSMITTER A piezoelectric oscillator includes: a piezoelectric resonator element having a piezoelectric substrate and an excitation electrode formed on a surface of the piezoelectric substrate; a semiconductor circuit element provided with an oscillation circuit for oscillating t...	01/22/2009
20080266003	SURFACE-MOUNTED PIEZOELECTRIC OSCILLATORS AND PIEZOELECTRIC VIBRATORS Surface-mounted piezoelectric oscillators are disclosed that include a package in which a piezoelectric vibrating piece and an electronic circuit (IC) are mounted. At least two external terminals are formed on the external surface of the package and electrically connect...	10/30/2008
20080231385	Oscillator Based on Piezoresistive Resonators An oscillator circuit has a first and a second piezoresistive resonator (1,2), each having a resonant frequency, each piezoresistive resonator having an input for driving the resonator, and each piezoresistive resonator having its input coupled directly to an out...	09/25/2008
20080136542	Composite Resonance Circuit and Oscillation Circuit Using the Circuit There is provided a resonance circuit using piezoelectric vibrator such as a quartz resonator, a coil, a capacitor, or an element equivalent to them in combination. When two resonance circuits having different resonance frequencies are combined, it is possible to config...	06/12/2008
20080088384	Manufacturing method of tuning-fork type quartz crystal resonator There is disclosed a manufacturing method of a tuning-fork type quartz crystal resonator, in which a simple step can just be added to the existing manufacturing process to prevent generation of short-circuit at a crotch portion and largely improve yield. 04/17/2008
20080084134	Surface acoustic wave device A surface acoustic wave device is provided. The surface acoustic wave device includes a piezoelectric substrate and an IDT which is disposed on the piezoelectric substrate and made of Al or an alloy containing Al as a main component and using an SH wave as an excitation...	04/10/2008

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Class 331/155 - With optical, piezoelectric or acoustic coupling means