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Matches 751 - 800 out of 2,401

Document Document Title
JPWO2008001914A
The present invention is excellent in the controllability of a capacity value, and a tuner kinky thread tee is variable. And it is related with the amount capacitor array of good changes of a high tuner kinky thread tee. The 1st variable...  
JPWO2007145259A
Both the present invention satisfies reduction in distortion, and consumption current reduction-ization, and relates to the amount circuit of good changes in which electric power-proof, cost reduction, and a miniaturization of a circuit ...  
JP2007325321A
To provide an improved apparatus for reducing the leakage effect of a local oscillator in a direct down-conversion receiver. The present invention provides a phase shift filter and a direct down-conversion receiver which compensates a ph...  
JPWO2005050680A1
エレクトレットとなる帯電したシリコン酸化 膜105を覆うようにシリコン窒化膜103 及びシリコン窒化膜106が形成されている 。  
JP2007534162A
A method for contacting patterned electrode devices includes the steps of providing a porous substrate, depositing electrically conductive material to form at least one electrode on a front-side of the porous substrate and depositing at ...  
JP2007298297A
To provide an easily-miniaturizable machine electric conversion element and its manufacturing method, having low manufacturing cost, high heat resistance and high operation stability. A microphone capsule has a constitution equipped with...  
JP2007295308A
To solve the problem about the heat resistance of a detecting electrode board made of a fluoric organic resin used for the conventional electret capacitor microphone (ECM), i.e., the problem that, if the apparatus is mounted at high temp...  
JP2007294736A
To provide a variable capacitance element in which a drop is suppressed in Q value due to voltage application at a desired frequency, and also, to provide a variable filter or the like in which insertion losses and phase characteristics ...  
JP2007294858A
To permit the electret of a dielectric film to an objective amount of electric charge with a high accuracy without investigating the condition of electric charge previously or even when the size of sound hole of a fixed electrode is smal...  
JP2007295635A
To provide an FE (ferroelectric) dielectric-tuned antenna and a method for frequency tuning a wireless communications antenna. The method comprises steps of forming a radiator (106), forming a dielectric with ferroelectric material proxi...  
JP2007287996A
To ensure high reliability of a variable device that can control alternate-current (AC) power at a low power loss and with low noise. An electrode structure for the variable capacitor of this invention enables a used quantity of expensiv...  
JP3999300B2  
JPWO2007116471A
It is a capacity element to which capacity can be changed with voltage which a dielectric layer is formed between the 1st electrode layer and the 2nd electrode layer, and is impressed from the outside. A dielectric layer is A.2+B4+O3The ...  
JPWO2007116566A
While the number of laminations of an electrode with which a main part of a capacitor is equipped in a capacitor into which capacity is changed by direct-current bias impressed from the outside is reducible, it enables it to reduce volta...  
JP2007267272A
To provide a compact and high-sensitivity electret condenser microphone (ECM) having superior productivity. In an air gap structure, upper and lower electrodes 23, 13 oppose each other at a hollow section 16. An electret film 20 of a cha...  
JP2007227798A
To provide a variable capacitor element suppressing a decrease in Q value due to application of a voltage of desired frequency, and to provide a variable filter which is reduced in insertion loss and phase characteristic etc. The variabl...  
JP3958173B2
To provide an easily treated variable capacitor apparatus a variable capacitor element of which can be stably supplied with a bias signal. The variable capacitor apparatus comprises a variable capacitor element C1 wherein a first electro...  
JPWO2005086534A1
エレクトレット化されたシリコン酸化膜7を 耐湿及び耐熱性を高めるためにシリコン窒化 膜8および9で覆い振動電極5上に載置して 形成した振動膜30と、固定電極6とを...  
JP3955128B2
To provide a transparent and blue colorant to be used for a toner for electrophotograph, a developer, fine particles, fine particulate paint, ink jet ink and an electret material, having a very stable inherent frictional electric effect,...  
JP3946304B2
To improve long-term maintenance of charges by making an ionomer, whose carboxylic group of ethylene-nonsaturated carboxylic acid copolymer having a specified quantity of unsaturated carboxylic acid content is neutralized at a specific r...  
JP3946305B2
To improve long-term maintenance of charges by using a resin composition, which is composed of ethylene-unsaturated carboxylic acid copolymer and vinyl aromatic hydrocarbon-unsaturated carboxylic copolymer, and has a part of or whole cab...  
JP3940063B2
To provide a variable capacitance element wherein parasitic resistance among variable capacitance elements formed on a silicon IC is reduced. The variable capacitance element is provided with a conductive buried electrode layer 102 of di...  
JP3938272B2
To provide an electret condenser microphone which can be made thin. The electret condenser microphone 100 is provided with an electrode plate 110 where a film 111 made of an electret material is formed on one side 110a and a through-hole...  
JPWO2005052966A1
両持ち状態の梁を有し、初期状態での絶対位 置の制御性に優れた変位素子を提供する。複 数の機能材料層(13〜16)を厚み方向に 積層した構造を有する梁(12)におい...  
JP2007145960A
To provide a polymer foam excellent in surface smoothness and uniformity, to provide an electret using the same, and to provide a method for producing the same.A constituting material containing a substance capable of producing an acid o...  
JP2007123494A
To provide a variable capacitance capacitor with high Q value which has large capacitance variation caused by applied voltage.The variable capacitance capacitor comprises a dielectric substance composed of an electrostrictive material, a...  
JP3904240B2
A ceramic element comprises a main actuator element 26 having an anti-ferroelectric film 22 and a pair of electrodes 24a, 24b formed on a first principal surface (front surface) of the anti-ferroelectric film 22, a vibrating section 18 f...  
JP3898631B2
To provide a variable capacity thin-film capacitor which can suppress a capacity variation caused by a radio frequency signal, enhance a capacity variation caused by D.C. bias, decrease the number of thin film layers sequentially coated,...  
JP3898648B2
To provide a variable capacitance thin film capacitor which changes little in capacitance with high-frequency signals, varies much in capacitance with a DC bias, is protected against disconnection, and is restrained from deteriorating it...  
JP3898637B2
To provide a capacity variable capacitor circuit and a capacity variable thin film capacitor element where capacity change due to a high frequency signal is small, and capacity change due to DC bias is large and high frequency components...  
JP3898638B2
To provide a variable thin film capacitor and a radio frequency component which are small in the change of capacity caused by a radio frequency signal, are large in the change of the capacity caused by a D.C. bias, maintain its component...  
JP3890952B2
To provide a variable capacitance capacitor device which is reduced in parasitic inductance and capable of operating over a wide range of frequency band. This variable capacitance capacitor device is equipped with an insulating board 2 w...  
JP2007048764A
To surely achieve low resistance by reducing the thickness of a ceramic layer made of a BaTiO3-based semiconductor ceramic, and obtain a resistance approximate to a resistance to be calculated, based on a stacked structure.The thermistor...  
JP2006344845A
To provide a capacitor which is changed in capacitance by a DC bias applied from outside, capable of decreasing the number of laminated layers of an electrode provided to its capacitor main body, and capable of reducing a voltage necessa...  
JP2006328586A
To provide an electret body which exhibits excellent performances on fine particle collection, and to provide a gas-cleaning filter.This electret comprising a fiber sheet formed of two or more kinds of fibers including a polyolefin-based...  
JP2006332683A
To provide a high-frequency circuit module, capable of readily adjusting the gap of impedance and also responding to multibands or multimodes.A transmission line 41 and conductor plates 42 and 43 are formed by the conductor layer 25 of a...  
JPWO2006126375A
Since low melting metals, such as Ag and Cu, and the ferroelectricity glass ceramics which can be calcinated simultaneous are provided low [curie temperature], the present invention is x [(1*y) BaTiO.3- yLnAlO3] and uSiO2- vAl2O3(-- howe...  
JP2006320026A
To provide an enhanced tunable f-e filter capable of providing a tunable range higher than a desired frequency domain through low I.L. and out-of-high-band rejection, and a method of designing said filter.The present invention quantifies...  
JP2006303389A
To provide a thin film capacitor array capable of changing capacity by a large amount by the application of DC biasing voltage, and of minimizing nonlinear distortions or the like due to high-frequency signals.In the thin film capacitor ...  
JP2006303219A
To provide a variable capacitive element capable of obtaining a big capacitance change rate, even when a part of a capacitive electrode 30 is constituted of a relatively easily oxidizable metal, in the variable capacitive element having ...  
JP2006302942A
To provide a varactor for suppressing deterioration in a Q value due to voltage application at a desired frequency.The varactor is provided with a pair of electrodes 3, 6, and a dielectric film 4 sandwiched by the pair of electrodes 3, 6...  
JP2006287681A
To increase the capacitance of a variable capacitance element for use in a frequency variable oscillator while suppressing an increase in a mounting area.The frequency variable oscillator is provided with a semiconductor chip 11 with a f...  
JP2006287279A
To solve the problem that an element such as an electret condenser microphone employing a conventional organic electret material cannot maintain its performance as an element and cannot be reflow-mounted due to rapid attenuation of the c...  
JP2006245398A
To provide an electret structure having an excellent charge holding capacity.A silicon oxide film 1 as an electret is formed on an insulating film 3 in a patterning. The insulating film 2 is formed so as to coat the silicon oxide film 1....  
JP2006237239A
To provide a capacitance variable circuit and communication system for easy controlling of characteristics by applying a voltage.Fixed capacitance capacitors Cd1-Cd5, and variable capacitance capacitors Ct1-Ct5 using a thin film dielectr...  
JP2006234574A
To realize a capacitance thermometer with high temperature sensitivity and high absolute sensitivity which has a high dielectric constant at a cryogenic temperature.The capacitance thermometer carries out a temperature measurement by det...  
JP2006226728A
To provide a capacity type humidity sensor with the variations in sensitivity are reduced.The capacitance type humidity sensor 100 comprises a pair of electrodes 31 and 32, arranged on a substrate 10 so as to face each other in the same ...  
JP2006196871A
To provide a thin-film capacitor and a variable capacitor having excellent moisture-resistance reliability, and electronic components using them.The thin-film capacitor has a capacitance generation section which consists of sequential de...  
JP2006196704A
To provide a variable-capacity capacitor being capable of accurately obtaining desired capacity characteristics, depending upon no polarity of an applied voltage and facilitating its handling, a circuit module and a communication device....  
JP2006179674A
To provide a variable capacitor which has a large capacity change caused by an applied voltage, a high Q value and an excellent temperature characteristic.In the variable capacitor, a first variable capacity element and a first capacity ...  

Matches 751 - 800 out of 2,401