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JP2006128721A |
To manufacture a micro capacitor which has no slide contact like the capacitor in conventional technology.A digital turning type capacitor has a combination of various sized beams or plates arranged adjacent to a common plate. The plates...
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JP2006114715A |
To provide a variable capacitor which has a pronouncedly larger capacitance than in the related method, and can readily change a capacitance after a printed board or LSI package is manufactured.This capacitor is a bypass capacitor arrang...
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JP3771425B2 |
To make the measuring accuracy higher than before and make the range of measurements wider than before. This capacitive pressure sensor includes a first substrate 1, a first plate electrode 1a disposed on the first substrate 1, a pressur...
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JP2006100821A |
To provide a selectable capacitance circuit that can have a pair of electrically conductive plates having at least one plate that can carry out a relative motion if an adequate electrical control signal is given wherein the relative moti...
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JP2006093463A |
To obtain controllability having reproducibility and reliability by solving big problems in the structure of an MEMS variable capacitor having a piezoelectric drive mechanisms, namely by unifying the distance between the movable electrod...
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JP2006074020A |
To provide a capacitor capable of easily compensating a frequency variation property caused by a temperature of a vibrator from a low temperature portion to a high temperature portion, and to provide an oscillating circuit using the capa...
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JP2005340536A |
To provide a variable capacitor whose variance is less against a designed capacitance value and can realize a stable capacitance value even if vibrations or noises or the like are given from the outside.A lower electrode 2 having a wide ...
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JP3713787B2 |
To prevent displacement of a rotating axis of an adjusting nut and an axis of a movable lead bolt and to provide a vacuum capacitor which has no degradation of the part life, without being added a lateral force even if the nut is rotated...
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JP3711845B2 |
To provide a variable capacitor where solder can be surely prevented from infiltrating into the inside of a cover by improving a shape of the cover. This variable capacitor is provided with a stator 2, having stator electrodes 5, 6 and s...
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JP3712123B2 |
To provide a small-sized variable capacitor which is large in capacity, a rate of capacity variation and Q value and in which the capacity is finely adjustable and which has superior shock resistance and to provide a method of fabricatin...
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JP2005286658A |
To provide a semiconductor device including a thin film bulk wave element whose resonance frequency is adjustable, which can be made more small-sized.The semiconductor device 11 is provided with: the thin film bulk wave element 10; a res...
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JP3696193B2 |
To provide a small variable capacitor having high capacitance and variation rate of capacitance in which the capacitance can be adjusted finely, and to provide its manufacturing process. The variable capacitor comprises a substrate (21),...
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JP3692936B2 |
To reduce the number of components and to stabilize a spring action for urging to elastically press a rotor toward a stator. At a driver member 4 constituted of one metal plate, a head 17 for disposing a driver groove 15, an engaging par...
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JP2005223723A |
To realize a variable impedance element in which the variable range is wide, and fine adjustment is available.A movable conductor 1 consisting of a 1st movable conductor 11 which can move freely, and a 2nd movable conductor 12 which is i...
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JP3678371B2 |
PURPOSE: To provide a trimmer capacitor, where a stator electrode is capable of being stably arranged on the surface of a stator board, and no short circuit occurs between a stator terminal and a rotor terminal. CONSTITUTION: A trimmer c...
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JP2005175026A |
To realize a vacuum variable capacitor in which large current flows, its size is reduced, longitudinal direction resistance of a regulating nut is excellent, and the rotary torque of the regulating nut is reduced.In the vacuum variable c...
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JP2005174989A |
To raise the unevenness accuracy of an electrostatic capacity and a withstand voltage resistance.In a vacuum capacitor, respective cylindrical electrode plates 23a, 24a are formed in a straight shape. A plurality of annular grooves 25d, ...
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JP2005174988A |
To obtain a vacuum capacitor having a bellows which suppresses heating in an energizing time, has a long lifetime, and endures against a high temperature brazing.The vacuum capacitor includes a fixed electrode 6 and a movable electrode 1...
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JP2005174338A |
To coordinate size, weight, performance and cost of an electronic device, and apply the coordination especially to the electronic device with a keyboard.A portable electronic device 100 comprises a base part 104; an electronic display 10...
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JP3666333B2 |
To obtain a uniform amount of polishing even if the collective thickness of a plurality of works is different each other when applying polishing to the plurality of works such as dielectric elements serving as the stators of a variable c...
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JP3646291B2 |
To provide a coaxial balanced variable capacitor that has a wide variable range of capacitance and has a high breakdown voltage and can be finely adjusted easily. The inside of external both electrodes that is retained by an insulator an...
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JP3612118B2 |
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JP2004361394A |
To provide a capacitive dynamical amount sensor which is low in cost and small in size.The sensor comprises a capacity detection electrode which is mounted on a lower glass plate is conducted electrically into an outer surface of an uppe...
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JP3601397B2 |
A method for producing a stator for use in a variable capacitor includes providing a stator having a protruded portion provided on a first main surface of a stator component such that the top surface of the protruded portion has a height...
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JP2004535590A |
The invention relates to a device for detecting the position of a rotor relative to a stator, wherein at least one electrode is arranged on the rotor and at least one electrode is arranged on the stator, such that the electrodes at least...
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JP2004330412A |
To provide a micro-electromechanical device which controls a gap distance between electrodes in a wide range.This micro-electromechanical device comprises a micro-electromechanical system (MEMS) device (34) having a variable capacitor (4...
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JP2004282150A |
To realize the improvement of miniaturization and array characteristics by making a redundant delay line unnecessitated .The phased-array antenna device is composed of a large number of antenna elements 2, a large number of antenna lines...
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JP2004265966A |
To provide a variable capacity capacitor of high breakdown voltage wherein a starting voltage of causing atmospheric discharge is high in spite of a comparatively low cost.A first electrode (31) and a second electrode (41) which constitu...
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JP2004235577A |
To provide a voltage-controlled variable capacitative element which can be manufactured without changing existing manufacturing process or adding any new process, and does not enlarge the circuit size nor require higher voltage, and in w...
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JP2004235589A |
To provide a variable capacitor for contributing to downsizing of a characteristic measurement apparatus and contributing to simple acquisition of a piezoelectric characteristic.The characteristic measurement apparatus 10 is provided wit...
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JP2004221128A |
To provide a voltage driven variable capacitor which allows the initial capacitance value and the change rate of capacitance to be controlled at a high accuracy and has a high change rate of capacitance and a high reliability.The variabl...
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JP2004519845A |
The present invention relates to a stepped micro electromechanical structure (MEMS) capacitor that is actuated by a plurality of MEMS switches. The MEMS switches may be within the stepped capacitor circuit, or they may be actuated by an ...
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JP2004172575A |
To surely and easily form a cover sheet exclusively on the inner side of a plane of a case of an electronic mechanical component without increasing the process number, in an electronic mechanical component of a closed type in which an op...
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JP2004518290A |
A high-Q micromechanical device such as a capacitor and method of tuning same by electrostatically moving the capacitor's dielectric are provided. The high-Q, tunable, micromechanical capacitor is realized using an IC-compatible, electro...
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JP2004172504A |
To provide a compact capacitor capable of performing fine adjustment of capacity and having high shock resistance, a package provided with the variable capacitor, and to provide a method for manufacturing the variable capacitor.A variabl...
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JP3525485B2 |
PURPOSE: To eliminate the connection of an electronic component with a wiring board and a possibility that the component itself is damaged without mounting the component on a fixed plate and by removal of a knob. CONSTITUTION: One pair o...
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JP2004074341A |
To provide a semiconductor device achieving high reliability for durability, and excellent responsiveness.A static drive part 1 of this semiconductor device comprises electrodes 3 and 5 facing each other. An opening part 10 is formed in ...
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JP2004045178A |
To improve reproducibility and suppress the occurrence of malfunction.Electrodes E1 to E4 for a capacitive element and a sensor unit 10 having a displacement electrode 12 opposing to the electrodes E1 to E4 are arranged on a substrate 20...
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JP2003297671A |
To improve a capacitance characteristic of a parallel plate capacitor relative to an applied voltage.A capacitor (20, 40, 100, 150, 200) has a lower plate (29, 103, 242), an upper plate (23, 110, 125, 241), and a support unit (25, 126, 2...
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JP2003282359A |
To improve vibration resistance and reliability of a variable- capacitance element, by so displacing its movable body in an inclined direction that its movable body rides on its holding body, and by stabilizing its operations to vibratio...
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JP2003282358A |
To provide a trimmer capacitor wherein cracks of its dielectric rotor can be prevented previously, and its stable electrostatic capacity can be derived.The trimmer capacitor has a stator board 1, having a central through-hole 1a wherein ...
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JP2003264123A |
To stabilize the switching operation or the like of an element, and improve resistance to vibration and reliability by using a constitution wherein a movable electrode can be largely driven to both sides by using two driving electrodes.A...
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JP2003527746A |
The HF capacitor has 2 fixed electrodes (102a,102b) provided with HF input and output connections respectively and a facing relatively movable electrode (104), supported by a suspension device (106,108), controlled by a supplied control ...
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JP2003243254A |
To make variation of an electrostatic capacitance of a variable capacitor sufficiently larger and, at the same time, to simplify a control circuit which controls the electrostatic capacitance.On a substrate 1, a square shallow step 3 is ...
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JP2003229326A |
To provide variable capacitance on a substrate that can compose an inexpensive variable capacitor between a signal line on the substrate and the ground.A conductor 5 is rotated in an arrow direction by an appropriate quantity by an adjus...
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JP2003209027A |
To provide a micro-fabricated varactor from which Brown noise is eliminated.The varactor comprises a pair of signal path plates (150, 170) mounted on a deflecting beam (130) and a micro-fabricated varactor which includes a means for defl...
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JP2003188049A |
To make easier the adjustment of a variable capacitance capacitor.The capacitor is composed of a pair of capacitor electrodes 12 and 13. The electrode surface of the capacitor electrode 13 is formed in parallel with the substrate surface...
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JP2003168624A |
To provide a variable capacitor and its manufacturing method by which loosening of a caulked part in a central axis due to heat during soldering a printed board or the like can be prevented.A variable capacitor 1 is comprised of a stator...
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JP3408541B2 |
A variable capacitance type pressure sensor with excellent manufacturability center-mounts an electrode on an edge-mounted diaphragm using a metal-glass-metal subassembly. An inner metal post of the assembly is welded to the diaphragm. A...
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JP3389769B2 |
PURPOSE: To provide a variable capacitance capacitor large in a capacitance change rate and cheap in cost. CONSTITUTION: A reference electrode 4 is arranged and fixed to a bottom surface 5 of a recess part 8 of a substrate 3, and the ref...
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