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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 ...
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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 ...
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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...
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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...
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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....
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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...
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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...
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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 ...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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JP3735687B2 |
To provide an electret-improved filter medium manufactured from a fiber, for example, a meltblown superfine fiber. This electret filter medium contains a nonwoven web of thermoplastic, nonconductive microfibers having trapped charge. Thi...
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JP3733416B2 |
To provide an electret having high secondary non-linear optical characteristics by a method wherein the electret consists of a polar high- molecular thin film, which is formed on a glass substrate and is turned into an electret, and the ...
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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...
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JP2005308745A |
To provide a capacity type pressure sensor which can tap an impossible temperature range for a silicon pressure sensor.A first wafer supports an evaluation circuit and a capacitive electrode which are required to measure mainly an applie...
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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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JP2005262497A |
To provide a laminated sheet for an electret fixing electrode capable of sharply enhancing microphonic sensitivity when used in an electret condenser type microphone, having large charge holding power, excellent in properties as an elect...
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JP3692090B2 |
To provide a multi-layer electret having ultra-high charge stability with excellent thermal resistance so as to attain a work by the surface mount technology and to provide a method of manufacturing thereof. The multi-layer electret is c...
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JP2005236389A |
To provide an array antenna, whose directivity can be controlled and equipped with a stable variable phase shifter with small waveform distortions and intermodulation distortions, superior withstanding power, at a low loss.In the array a...
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JP2005236390A |
To provide a directivity variable array antenna having superior characteristics, such as electric power resistance, low distortion and low loss.The directivity variable array antenna 100 is provided with a radiation element 11a, to which...
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JP2005191467A |
To provide the manufacturing method of a laminated plate for electret-fixing electrode, in which charge holding force is large, charge attenuation is small, and further adhesive properties between a metal plate and an electret material l...
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JP2005175365A |
To obtain a capacity variable substrate that can decrease parasitic capacity of a substrate, as well as adjusting its parasitic capacity, and to obtain a substrate parasitic capacity adjustment method for adjusting substrate's parasitic ...
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JP2005136607A |
To provide a variable resonant circuit in which waveform distortion and inter-modulation distortion are small and which is superior in electric power resistance and has low loss.The variable resonant circuit R has an impedance element an...
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JP2005136074A |
To provide a capacitor which can obtain a required capacitance value with high precision and is excellent in response in a high frequency region.The lower surface of a dielectric layer 5 is smaller than the upper surface of a lower elect...
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JP2005108887A |
To provide a variable capacitor which is capable of restraining its Q-value from decreasing, due to the application of a voltage at a desired frequency, and to provide a variable filter which can be reduced in insertion loss and phase ch...
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JP3638160B2 |
PURPOSE: To provide an electret that has a high melting point and can be introduced to a semiconductor manufacturing process for easily achieving fine machining and thinning. CONSTITUTION: An SiO2 film 1 has a band structure consisting o...
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JP2005079168A |
To provide a variable capacitor which exhibits the small rate of a capacitance change caused by high-frequency signals even when the rate of a capacitance change caused by a DC bias voltage is set large, shows a small intermodulation dis...
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JP2005508096A |
A capacitive element includes two or more voltage-variable capacitors (varactors). The varactors are configured so that they are coupled in series with respect to an applied AC signal and are coupled in parallel with respect to an applie...
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JP2005050865A |
To provide a capacitor device which can restrain higher harmonic which is generated when a high frequency signal is inputted into a variable capacitor.In the capacitor device, a first variable capacitor C1, and a second variable capacito...
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JP2005503013A |
An electret comprising a porous substrate comprising polymer and charge additive, said substrate comprising no greater than 0.75 % by weight extractable hydrocarbon based on the weight of polymer in said substrate.
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JP2005502227A |
The present invention quantifies and reduces losses in tunable bandpass filters having ferro-electric capacitors. Given a required insertion loss and the quality factor of a resonator, the geometric losses resulting from a particular top...
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JP3603610B2 |
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JP3599558B2 |
To provide the manufacturing method of a variable-capacitance element for high frequency at a low cost that can be readily formed on a ceramic substance, of which capacitance changes greatly at low voltage, and of which the capacitor cha...
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JP3599528B2 |
To provide a variable capacitance element the capacitance of which can be changed largely under a low voltage by successively providing a lower electrode, a thin dielectric film, and an upper electrode on a substrate, with the thin diele...
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JP3596266B2 |
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JP3596268B2 |
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JP2004536287A |
The present invention quantifies and reduces losses in tunable bandpass filters having ferro-electric capacitors. Given a required insertion loss and the quality factor of a resonator, the geometric losses resulting from a particular top...
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JP2004312023A |
To provide a termination feature for a multilayer electronic component.The plated termination in question is guided and fixed by an exposed internal electrode tab that can be selectively extended on a cover layer of the multilayer compon...
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JP3577041B2 |
Frequency regulating apparatus (30) comprising a high power, voltage variable dielectric varactor (16) or capacitor (31) (or ferroelectric voltage variable dielectric capacitor (31)) for use as a control element in the regulation circuit...
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JP2004530360A |
The present invention quantifies and reduces losses in tunable bandpass filters having ferro-electric capacitors. Given a required insertion loss and the quality factor of a resonator, the geometric losses resulting from a particular top...
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JP2004259993A |
To provide a variable capacitance thin film capacitor with a small capacitance change by a high frequency signal and a large capacitance change by a DC bias, and to provide a high frequency component utilizing the variable capacitance th...
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JP2004241440A |
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, and is small in size, and to provide a high-frequency component using the s...
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JP2004235362A |
To provide a method of adjusting the capacity of a varactor with improved waveform distortion and cross-modulation distortion, a method of adjusting the resonance frequency of a resonance circuit, and a method of adjusting the band of a ...
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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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JP3554779B2 |
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