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Matches 551 - 600 out of 2,172

Document Document Title
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...  
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...  
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...  
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...  
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...  
JP3904240B2  
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...  
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...  
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...  
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,...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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 ...  
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...  
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...  
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 ...  
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....  
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...  
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 ...  
JP2006159356A
To obtain a piezoelectric driving type micro electro mechanism system (MEMS) device capable of obtaining a desired characteristic under a condition where acceleration is applied.This device comprises a supporting part 6 installed on a su...  
JP2006128302A
To provide a variable capacitance capacitor easy in how to control applied voltage and excellent in characteristics such as high withstand electric power and low distortion.The variable capacitance capacitor includes a variable capacitan...  
JP2006120765A
To achieve a varactor having the desired dielectric characteristic without change of dielectric material.A (Ba, Sr)TiO3 dielectric material film is formed on (110) alignment LiTaO3 single crystal substrate with the chemical solution meth...  
JP2006513971A  
JP2006109512A
To provide a tunable ferroelectric multiplexer for use in CDMA communications devices.Tunable ferroelectric capacitors are used to tune the resonance frequencies of several resonators used in a multiplexer and to tune the frequency respo...  
JP2006108502A
To provide a micro capacitor capable of changing capacity by simple constitution, and securing and stabilizing the capacity.The micro capacitor is provided with capacitors 11, 12 constituting a plurality of capacitors C, a dielectric fil...  
JP2006093680A
To provide a variable capacitor which has a high Q value even in a high-frequency region and has a small rate of capacitance change due to a high-frequency signal while increasing its rate of capacitance change due to DC bias voltage.The...  
JP2006093323A
To provide a variable capacitance capacitor in which the change of a capacity by an applied voltage is large, a Q value is high and temperature characteristics are good.In the variable capacitance capacitor, a first capacitor C1, an indu...  
JP2006093322A
To provide a variable capacitance capacitor in which the change of a capacity by an applied voltage is large, a Q value is high and temperature characteristics are good.In the variable capacitance capacitor, a first capacitor C1 and a va...  
JP2006066647A
To provide a variable capacitor, small in a capacity changing rate by high-frequency signal while enlarging the capacity changing rate by a DC bias.The variable capacitor is provided with a plurality of variable capacity elements C1-C5 c...  
JP2006049840A
To provide a variable resonance circuit which exhibits a low degree of waveform distortion or intermodulation distortion, a high electric power resistance and a low loss.Several variable capacitors C1-C4 each using a thin-film dielectric...  
JP3767543B2
To prevent an exfoliation between an internal conductor and a ceramic even when the internal conductor is formed by a thin film forming method and a dielectric layer is thinned. A conductive film is formed on a film by a thin film formin...  
JP2006019737A
To provide a MEMS variable capacitor using an interdigitated three-dimensional comb actuation electrode indicating large capacitance variations and tuning ranges.A three-dimensional MEMS variable capacitor is described wherein movable co...  
JP2006012990A
To provide a capacity device which is free of damage capable of correctly adjusting capacity repeatedly, and can be manufactured at a low cost.In the capacity device 100 comprising dielectrics 4, 12, a first electrode 20, and a second el...  
JP2006500785A  
JP2006003301A
To provide an oxide thin film for a dielectric bolometer, its manufacturing method, and an infrared solid state imaging device using the oxide thin film for the dielectric bolometer.An infrared detection film changing a dielectric consta...  
JP2005340587A
To miniaturize a driving unit for regulation and prevent the error of an electrostatic capacity caused by the abrasion or the deformation of a screwed part for a rotary unit by suppressing the increase of rotating torque upon regulating ...  
JP2005340470A
To provide a variable capacitor, a circuit module and a communication system which are easy to handle without being influenced by the polarity of applied voltage by precisely obtaining a desired characteristic.In this variable capacitor,...  

Matches 551 - 600 out of 2,172