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Matches 451 - 500 out of 2,170

Document Document Title
JP4377740B2  
JP2009267165A
To provide a variable capacitor and an electronic device, having a structure enabling setting of field sensitivity with respect to a control voltage irrespective of a breakdown voltage with respect to a signal voltage.The variable capaci...  
JP2009268122A
To provide a tunable matching circuit of low-loss in RF.A ferroelectric material is used in order to produce a low-loss tunable capacitor 32 and inductor 31 for using in a matching circuit 22. The matching circuit 22 is provided with a c...  
JP2009268309A
To provide an electrostatic operation device capable of performing operations in an optimal manner.The electrostatic operation device (electrostatic inductive type electric power generating apparatus 100) includes counter electrodes 22 a...  
JP2009260063A
To provide a resin foam electret which can convert electric energy into mechanical energy, or convert the mechanical energy into the electric energy, is excellent in charge retention nature at high temperature, and can easily be manufact...  
JP4357876B2  
JP2009253050A
To provide an electret excellent in thermal stability of an electric charge and to provide an electrostatic induction type conversion device with the electret.The electret includes a layer comprising organic/inorganic composite materials...  
JP2009246327A
To cause a dielectric with edges and holes to be efficiently charged.When a protrusion 110 is cooled down, the protrusion 110 contracts and the diameter of the protrusion 110 becomes smaller than the diameter of a hole 2. Then, after the...  
JP4338745B2  
JP2009212168A
To provide a variable-capacitance element wherein a desired capacitance value which corresponds to a write voltage can be freely set and a capacitance value which has been set before is maintained even when there is no write voltage, and...  
JP2009212167A
To provide a varactor which is adaptive to applications of electronic devices including various electronic devices and communication mobile devices, and to provide an electronic device comprising the varactor and a communication mobile d...  
JP2009212436A
To provide an electret of which the surface potential is improved, and to provide a method for manufacturing thereof, as well as an electrostatic induction type conversion device which is equipped with the electret.The electret is consti...  
JP2009207344A
To improve conversion efficiency of a mechanical electric energy conversion device using Electret.In a mechanical electric energy conversion device 10, as an example, an electret holding body 11, to which an electret film 12 is applied, ...  
JP4325930B2  
JP2009182757A
To remove dirt automatically from an electret film and a measurement electrode plate when measuring the surface voltage of the electret film integrally provided in a fixed electrode.In a surface voltage measurement method of an electret ...  
JP4310571B2  
JP2009177404A
To measure potential between two poles of an electret condenser which is already assembled, in a nondestructive manner.A method is disclosed for measuring the potential between poles of the electret condenser 300 which is equipped with a...  
JP4307084B2  
JP4307141B2  
JP2009164539A
To provide an electret structure surely securing the moisture resistance regardless of the thickness of an inorganic electret member, and also to provide its forming method, and an electret type capacitance sensor.A silicon microphone 10...  
JP2009147204A
To obtain a variable capacitor which can control its capacitance, using a simple structure through easy and simple control.Fixed capacitors C1 to C5 are mounted on a substrate 3 which are connected in parallel. FET 1 to FET 4 are located...  
JP2009142043A
To control AC power with a low loss and low noise while reducing a size and cost, also reducing the mounting number of components, and saving a space.A variable capacitance element of a variable capacitor C2(1VC) is connected to a fixed ...  
JP4286304B2  
JP2009123999A
To provide a method for manufacturing a micro condenser microphone, which can achieve an electret process of a dielectric film of a MEMS microphone chip by using inexpensive manufacturing facilities of simple structure and can improve pr...  
JP4268205B2  
JP4264103B2  
JP4264104B2  
JP2009088444A
To provide an electret having high surface charge density, and to provide an electret capacitor microphone that has the electret.The electret contains a fluorine aromatic resin consisting mainly of a fluorine aromatic polymer. The electr...  
JP2009088100A
To provide a material for an electret having an excellent adhesion to a metallic base and a high heat resistive charge storage rate, and to provide an electret component using the electret material.A material 10 of an electret includes a...  
JP2009076788A
To provide a laminated ceramic element capable of precisely detecting temperature, and to provide a mounting structure thereof.The mounting structure has an NTC capacitor 1, an NTC thermistor, a choke coil, a switching circuit, a feedbac...  
JP2009076613A
To provide an electrostatic operation device capable of suppressing discharge of electric charges induced at an electrode through a spacer (projection portion) while suppressing contact between a first electrode portion and a second elec...  
JP2009508340A  
JP2009507446A  
JP2009021770A
To provide an EBG element capable of successfully performing leak cutoff to a broadband high-frequency circuit.An antenna 102 on an insulating film 101 of a substrate 100 is connected to a transmission path 104 in the insulating film 101...  
JP2009016613A
To miniaturize a device and to improve reliability.In the capacitor array incorporating a plurality of variable capacitors C1-C4, a plurality of positive and negative electrodes are alternately stacked for the respective variable capacit...  
JP2009006313A
To provide a novel electret article comprising a polymer exhibiting an excellent oily mist loading performance, low penetration, and a small pressure drop and a performance enhancing additive.Disclosed is an electret article in the form ...  
JP2008311387A
To adjust a surface voltage charged on an electret dielectric film to a predetermined voltage by a simple technique.For example, when adjusting an surface voltage charged on an electret dielectric film 23 which is contained on the side o...  
JP2008300646A
To improve yield or reliability of a variable-capacitance system in which multiple MEMS varactors including defective elements are integrated.A controller 100 for variable-capacitance elements has a directive means 108 for directing cont...  
JP2008294455A
To detect in which direction of directions orthogonal to a substrate a physical quantity acts even while manufacture is performed by a simple manufacturing process.A movable electrode 148a can be displaced in a z axial direction (directi...  
JP4191959B2  
JP4181580B2  
JP2008277473A
To provide an electret element capable of suppressing the reduction of charge to be stored in an electret film.The electret element 100 has: the electret film 2 capable of storing charge; and a charge outflow control film 3 that is forme...  
JP2008277996A
To provide a variable capacitance capacitor which can easily control the characteristics, and to provide a filter circuit.The variable capacitance capacitor includes a variable capacitance element group, comprising a plurality of variabl...  
JP2008263157A
To provide an electret element which can inhibit a charge accumulated in an electret film from being reduced.The electret element 100 includes an electret film 3 into which an electron is injected and a barrier film 4 which is located on...  
JP2008258670A
To provide an antenna device that realizes transmission and reception, in a frequency band having a wide bandwidth.The antenna device is equipped with a variable capacitance capacitor C2 using a dielectric material, a capacitor C1 connec...  
JP2008258186A
To provide a compact variable capacity device having a high continuously variable capacity ratio.The variable capacity device comprises a variable capacity capacitor employing a ferroelectric material, a capacitor connected in series wit...  
JP2008252340A
To provide a tunable filter which is capable of efficiently varying a coupling capacitance between resonators with a simple structure and is suitable for integration.In the tunable filter 10, by arranging the two or more resonators 12a a...  
JP4157375B2  
JP2008228315A
To provide a preferable integrated ceramic inverted-F ferroelectric antenna.The inverted-F ferroelectric antenna includes a counterpoise 102, a ceramic block, an inverted-F structure radiator 104, a bias voltage feed 300 metal inlay, a g...  
JP2008219900A
To provide a narrowband resonant circuit for measuring the loss of the ferroelectric component.A tunable ferroelectric component (610 to 614) and a narrowband resonant circuit (610 to 620) for measuring the loss of the ferroelectric comp...  

Matches 451 - 500 out of 2,170