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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...
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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...
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JP2008211064A |
To provide a variable-capacity capacitor array that is excellent in controllability of a capacity value and has no change in tunability, and a variable-capacity capacitor relay.The variable-capacity capacitor array is provided with a plu...
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JP4142128B2 |
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JP4142127B2 |
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JP4141679B2 |
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JP4121362B2 |
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JP2008167474A |
To provide FE dielectric-tuned antennas and a method for frequency tuning a wireless communications antenna.The method comprises forming a radiator; forming a dielectric with ferroelectric material proximate to the radiator; applying a v...
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JP2008161036A |
To provide an electrostatic induction type converter which improves conversion efficiency between kinetic energy and electrical energy.The electrostatic induction type power generator (electrostatic induction type converter) 300 includes...
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JP2008159661A |
To provide a wanted variable capacitance range by combining a plurality of capacitors while eliminating or decreasing the required number of switches.The variable capacitor comprises a first electrode provided at a fixed part including a...
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JP2008154240A |
To provide a small and highly reliable resonator which is manufactured easily, and also to provide an electronic apparatus employing it.The present invention relates to a resonator comprising two acoustic impedance transducers T1, T2 and...
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JP4106034B2 |
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JP2008141171A |
To provide an electret device capable of increasing the surface potential of an electret film composed of a silicon oxide film.An electret device 10 includes a silicon substrate 1 having a groove 1b on the main surface 1a thereof and an ...
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JP2008118070A |
To provide a variable capacitance element in which the passage of direct current is prevented.The variable capacitor element comprises: a first capacitative element 3 that has plate electrodes 3a and 3b opposed to each other via a ferroe...
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JP2008112755A |
To provide a new technique for making electret for a condensor microphone, capable of forming an electret of a dielectric film of a condensor microphone to be formed through micro-processing of a silicon substrate without laboring, and c...
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JP2008112781A |
To provide an electret element capable of forming a region having high charge density on an electret film.The electret element 10 has: the electret film 2 capable of storing charge; and a charge outflow suppression film 3 that is formed ...
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JP2008516444A |
[Subject] [Solution means] book invention is varactor apparatus (100) in which temperature stability has been improved, and is equipped with the 1st varactor (160) connected to the decoupling network (150). Apparatus is further equipped ...
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JP2008108862A |
To enlarge a band which a capacitor can use.In the capacitor having a pair of electrodes and a dielectric sandwiched between a pair of the electrodes, a frequency with which orientation polarization of the dielectric dissipates is set to...
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JP2008512973A |
The method and device bracket for the radiation susceptibility reduction which can be reconstructed are shown. This method receives the radiation wave from sources, such as a transmitter, an antenna, a microprocessor, and electric parts,...
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JP2008098609A |
To provide a tunable capacitor using an electrowetting phenomenon, which facilitates a fabrication process, provides good reliability and durability, and has no limitation on a tuning range.The tunable capacitor includes a first electrod...
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JP4077322B2 |
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JP2008085291A |
To suppress a leakage current and an electrostatic breakdown generated at a dielectric film step portion due to surface roughness of a dielectric film, and to improve insulation of a variable capacitance capacitor.A lower electrode layer...
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JP2008085081A |
To provide a variable capacitor which has a large electrostatic capacity change to an applied voltage, and a high Q value.A first electrode layer 2 and a second electrode layer 3 are both formed of conductive material and provided confro...
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JP2008072740A |
To provide an appropriate tunable multiplexer.The present invention provides a tunable ferro-electric multiplexer for use in CDMA communication devices. Tunable ferro-electric capacitors are used to tune the resonant frequencies of sever...
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JP2008066682A |
To provide a variable capacitor capable of realizing both of lowering of a bias voltage and the maximization of an electrostatic capacitance changing rate.This variable capacitor comprises, a first capacitance portion which is formed by ...
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JP2008053563A |
To suppress a capacity while overcoming the difficulty of micro-fabrication, and to secure satisfactory tunability.Organic solvent containing SiO2 is spin-coated on the main face of a high dielectric layer 16, and heating and removal tre...
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JP2008051511A |
To optimize each stress of a diaphragm and a plate of a capacitance sensor.This manufacturing method of the capacitance sensor comprises the steps of depositing a film to be a diaphragm forming a movable electrode, heating the film to be...
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JP2008053400A |
To provide an electret condenser that has reliability in humidity-proofing properties and the like improved.The electret condenser includes a polysilicon film 115 used as a fixed electrode, a polysilicon film 102 opposite to the polysili...
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JP2008506265A |
A varactor consists of 1st and 2nd electric conduction layers which estranged mutually and were allotted so that given voltage might be impressed over the 1st and 2nd electric conduction layer. Furthermore, including at least one insulat...
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JP4053504B2 |
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JP2008042436A |
To provide a method of manufacturing an electret capacitor headphone in which a sufficient polarization voltage can be obtained by electret without generating spark discharge.After the electret dielectric film (FEP) of each fixed pole 21...
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JP2008035569A |
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 the filter.The present invention quantifies...
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JP2008021787A |
To provide an electret having high electric charge storing performance, and to provide a manufacturing method thereof.The electret 12 consisting of an insulator film bearing electric charges has a reformed surface formed by reforming at ...
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JP2008022585A |
To provide an appropriate tunable multiplexer.A tunable ferro-electric multiplexer for use in CDMA communication device is provided. Tunable ferro-electric capacitors are used to tune the resonant frequencies of several resonators used i...
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JP2008021786A |
To provide an electret having high electric charge storing performance, and to provide a manufacturing method thereof.In the electret 12 consisting of an insulator film bearing electric charges, the electric charges are distributed so th...
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JP2008016919A |
To provide a sound response device having a small high sensitivity capacitor exhibiting stabilized characteristics through a simple arrangement.The sound response device 10 has a capacitor consisting of a fixed electrode film 12 and an o...
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JP2008005534A |
To provide a suitable integrated inverted-F ferroelectric antenna.The integrated inverted-F ferroelectric antenna comprises a counterpoise 102, a ceramic block 110, an inverted-F structure radiator 104, a bias voltage feed metal inlaid, ...
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JP2008005535A |
To provide a suitable coplanar inverted-F ferroelectric antenna.The coplanar inverted-F ferroelectric antenna 100 comprises a first dielectric layer 1000, a counterpoise layer 1002, an inverted-F radiator 1004, and capacitor circuits 101...
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JP2008005552A |
To provide an apparatus improved to reduce leakage effects for a local oscillator in a direct down conversion receiver.A phase shift filter and the direct down conversion receiver which performs phase compensation are provided. A DC offs...
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JP4031367B2 |
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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...
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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 ...
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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...
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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...
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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 ...
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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...
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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...
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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...
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JP3999300B2 |
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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...
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