Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 851 - 900 out of 2,431

Document Document Title
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...  
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...  
JP2005260208A
To provide a thin film piezoelectric actuator having a stable structure which can be easily controlled, has a wide driving range and a low driving voltage.In a thin film piezoelectric actuator of a double-clamped beam structure having a ...  
JPWO2005086534A
Electret capacitor microphone unit 2 comprising:Timbal 30 which covered electret-ized silicon oxide film 7 with silicon nitride films 8 and 9, and laid and formed it on vibrating electrode 5 in order to improve moisture-proof 及び heat...  
JP2005243965A
To provide a varactor that prevents a Q value from lowering caused by voltage application in a desired frequency, maintains the high Q value regardless of the voltage application, and lowers an insertion loss and phase characteristics.Th...  
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...  
JP2005236391A
To provide a variable attenuation circuit that exhibits only small waveform distortions and intermodulation distortion and that is superior in electric power resistance.The variable attenuation circuit At comprises a distributor for dist...  
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...  
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...  
JP2005217852A
To provide a tunable filter in which a pass band is variable in a wide frequency region, the pass band can be continuously varied, insertion loss is small, an interrupting characteristic is steep, downsizing is possible, and reliability ...  
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...  
JP2005191208A
To provide a small-size, highly reliable, and high performance electret capacitor which shows excellent moisture-proof characteristic and includes an electret formed of silicon oxide film.The electret capacitor comprises a first electrod...  
JP2005183437A
To provide electlet capacitor which ensures excellent moisture-resistant characteristic.An electlet silicon oxide film 7 formed on a silicon substrate 6 is sandwiched by an insulating film 9 and a metal film 8, thereby preventing the sil...  
JP2005184270A
To provide a stabilized variable phase shift circuit exhibiting excellent withstand power and low loss in which waveform distortion and intermodulation distortion are suppressed.In the variable phase shift circuit P having a transmission...  
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 ...  
JPWO2005052966A
It has a beam of both 持ち state and provides a displacement element in an initial state which was excellent in the controllability of a position absolutely. While arranging a thickness grant member (27) in the central part (26) of the...  
JP2005150466A
To provide a variable capacitor reduced in nonlinear distortion, high in electric power resistance, with the amount of its variable capacitance practically unaffected by high-frequency voltages.The variable capacitor has a function to ch...  
JP2005140779A
To prevent contamination of electrical noises in a conditional electronic circuit of a capacitive fluid pressure detective transducer.The capacitive fluid pressure detective transducer (10') has a detection element (12) provided in a cap...  
JPWO2005050680A
Silicon nitride film 103 and silicon nitride film 106 are formed so that electrified silicon oxide film 105 used as electret may be covered.  
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...  
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...  
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...  
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...  
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...  
JP2005508096A
A capacitance element has two or more voltage variable capacitors (varactor). These varactors are constituted so that it may be connected in series about the AC signal impressed and may be connected in parallel about the DC bias voltage ...  
JP2005064437A
To provide a variable capacitor wherein a bias signal is applied stably to a varactor, miniaturization is realized, handling is easy, waveform distortion, intermodulation distortion, etc. are small, electric power resistance is also supe...  
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...  
JP2005503013A
The production method of electret including the process contacted to the composite containing the solvent as for which the porosity base material containing polymer can swell polymer, the process of removing a solvent from a base materia...  
JP2005502227A
The method for the frequency which adjusts FE dielectric adjustment antenna and a wireless communication antenna is offered. The step in which this method forms a radiant surface (106), and the step which forms the dielectric which has a...  
JP2005502186A
The present invention offers the microwave device which has controllable capacity electrically. The microwave device (10) of the present invention is having the conductive electrode (102, 103 A*C) arranged on a substrate including the fe...  
JP3603610B2  
JP2004354199A
To provide a multivariate detection sensor capable of detecting the multivariate with a single detector, having a simple structure, and to provide a method for identifying a plurality of physical quantities for identifying the objective ...  
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...  
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...  
JP3596266B2  
JP3596268B2  
JP2004536287A
The narrow-band resonant circuit (610*620) for measuring the loss of a tunable ferroelectric component (610*614) and a ferroelectric component is indicated. A ferroelectric component may be the capacitor united with the resonant circuit....  
JP2004327868A
To provide a capacity variable thin film capacitor element which enlarges a usable frequency range and restrains characteristic defect and deterioration of reliability, and a high frequency component using it.First to Nth variable capaci...  
JP2004327983A
To provide a multilayer electronic component for a plated termination for a multilayer electronic component, for example, for a capacitor, for a resistor, for an inductor, or for an integrated passive element.In a plated termination, a p...  
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...  
JP2004309280A
To provide a capacitive detection type oscillation gyroscope in which the power supply dependent accuracy of a detection signal against the variation in the power supply voltage is improved.A capacitive detection circuit 3 is provided fo...  
JP3577041B2  
JP2004530359A
The present invention offers the direct down conversion receiver which performs a phase shift filter and phase compensation. A DC offset detector detects the DC offset of the received baseband signal, and offers a feedback signal. A tuna...  
JP2004530360A
The present invention offers the Chu Nabeul ferroelectricity multiplexer for using in a CDMA communication device. Since the resonance frequency of some resonators used by a multiplexer is tuned up and the form of the frequency response ...  
JP2004529558A
The voltage control type oscillator which incorporates a ferroelectricity capacitor in a resonant circuit is offered in order to offer the control voltage / capacitance relation between better phase noise performance performance and alig...  
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...  
JP2004527914A
Form the MRAM structure which made the minimum interval a restricted layer, a ground digit line, etc. Demarcate a masking pattern using photolithographic technique, and form the spacer for decreasing the distance between two arbitrary ad...  
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...  
JP2004241439A
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...  
JP2004526379A
About [reverse] F dielectric antenna is offered. This antenna is equipped with counterpoise or the grounding plane 102, and the reverse F structure radiator 104 that has the 1st end 106 connected to counterpoise. Usually, the fixed diele...  

Matches 851 - 900 out of 2,431