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JP2000049487A |
To obtain a method and an apparatus in which noise electromagnetic waves such as an electromagnetic interference(EMI) or the like radiated from an electronic apparatus or an electronic component can be reduced. An apparatus 60 is an elec...
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JP3009763B2 |
An electromagnetic radiation absorbing material (12) comprises doubly layered core particles (11) dispersed in a dielectric binder material (14). The first layer (15) dissipates radiation; the second layer (17) is an insulating material ...
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JP2000031725A |
To reduce fluctuation in received power with respect to the on-vehicle patch antenna. The on-vehicle patch antenna is mounted on a vehicle to receive a signal of radio communication and is provided with a ground plate 11, a dielectric bo...
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JP2000022479A |
To easily absorb the electromagnetic wave of unwanted radiation by providing a conductor to connect one terminal to the ground and a function for absorbing the electromagnetic wave having almost the same frequency as the conductor's reso...
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JP2000004097A |
To provide a manufacturing method for obtaining a composite magnetic sheet, which uses a magnetic resonance frequency fr in a lower frequency band than the conventional band, and which can reduce electromagnetic interference with a high ...
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JP2994747B2 |
Self-prontonated sulfonic acid-substituted polyaniline compositions, processes for their preparation and uses therefor are disclosed. The sulfonated polyaniline compositions have faster electronic and optical responses to electrochemical...
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JPH11352077A |
To suppress reflection which obstructs measurement by forming a connector of two parts of a connector part inner conductor and a connector part outer conductor, connecting an inner wall face of the connector part outer conductor continuo...
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JPH11350628A |
To manufacture an electric wave absorbing wall with an RC (reinforced concrete) technique by positioning ferrite magnetic materials standingly formed to be continued in the direction of the magnetic field components of incoming electric ...
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JP2992763B2 |
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JPH11346256A |
To provide the electromagnetic wave absorbing device for a portable telephone set that absorbs an electromagnetic wave without weakening a radio wave at a low cost so as to reduce the effect of the electromagnetic wave on a brain and eye...
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JPH11346081A |
To reduce the weight of the enclosure of electronic equipment, improve electromagnetic shielding performance, and reduce costs by forming the enclosure of the electronic equipment with a material where a carbon filler is mixed into a syn...
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JP2989897B2 |
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JPH11340675A |
To reduce emission and radiation of electromagnetic waves in the vicinity of the antenna summit of a portable telephone set by providing an electromagnetic wave reducing means composed of a conductive material at the antenna summit. A st...
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JPH11330847A |
To enable stabilization of a transmission/reception level in spite of a position of an antenna, even when installing an antenna near a dielectric by providing an antenna element on one side of a substrate and providing an antireflection ...
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JP2979898B2 |
PURPOSE: To provide a radio wave anechoic chamber which can reduce the reflection at the coupling part between the ferrite radio wave absorber arranged at a waveguide part and the radio wave absorber of resistance loss material of a rece...
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JP2971168B2 |
The subject of the invention is an electrically conductive element intended more particularly for producing electromagnetic-wave, especially radar-wave, absorbing elements. According to the invention, the electrically conductive elem...
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JPH11298241A |
To package plural modules constituting an array antenna feeding device with high density by covering the periphery of a multilayer substrate with a metallic layer, forming control lines and feeding lines inside and providing a connecting...
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JP2967079B1 |
[wrap up] [Task] Shields electromagnetic waves so that harmful electromagnetic waves emitted from mobile phones do not affect the human body. The electromagnetic wave shielding device 1 is made of a conductor 2 made of a metal foil. An i...
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JP2968478B2 |
To make it possible to firmly adhere an absorber on a ceiling or on a side wall of an electric wave dark room by forming, in an ashesive face, a groove 21 or recessed section to put an adhesive in and making the shape of the groove 21 or...
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JPH11284401A |
To avoid the discontinuity in the ground plane of a connection part between high frequency circuit units and to avoid the deterioration of a transmission characteristic. Circuit boards 112 and 122 loading high frequency transistors TR1 a...
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JPH11281730A |
To provide an underground search antenna with reduced weight and less irregular reflection. A metal case 10 whose one side is opened and an antenna element 12 set near the open side in the case 10 are provided, and a radio wave is emitte...
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JP2956875B2 |
An electromagnetic shielding composite containing a thermosplastic synthetic resin mixed with a metal conductive fiber, low melting point metal, and a vapor-phase grown carbon fiber, which preferably includes, to the total weight of the ...
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JPH11265233A |
To make increasable the area of a vent hole, and to make inside heat-up suppressible by realizing ventilation in front of a device when transparent or translucent materials are used for an outer cover, and any malfunction due to disturbi...
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JPH11261283A |
To exclude generation of a region incapable of communication which is to be caused by the reflected wave of a radio wave for communication, when radio wave communication is performed by using a radio wave for communication in a room. Rad...
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JPH11261331A |
To supply stable power to an IC card which does not have a battery and to maintain stable communication with an interrogator by using a line G (Goubau line) whose one end is terminated in terms of high frequency with a load. The signal o...
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JPH11261281A |
To effectively attenuate radio wave, at a low cost. A thin conductor plate 2 like a carbon steel plate is stuck on the surface of magnetic substance 1 like ferrite. When a radio wave absorbent is arranged in the vicinity of a radio wave ...
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JPH11261280A |
To effectively attenuate radio wave, at a low cost. A resonance circuit constituted of a coil 4 formed by winding conductor and a capacitor 5 connected with both ends of the coil 4 is arranged on a surface of magnetic substance 1 like fe...
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JPH11256121A |
To ensure general-purpose tiles for general building sheathing to be used in the subject walls through developing a cement-based adhesive for ferrite tiles. The subject structure of tiled radio wave-absorbing wall has such a scheme that,...
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JP3060368U |
[Task] We are trying to provide an antenna that has high reception sensitivity, can detect the direction of the source of radio waves, and can identify the device to be installed. It is composed of an antenna main body, a head detachably...
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JPH11233989A |
To ensure the adhesion strength without an exterior facing material having special shape, by providing a ferrite magnetic body in the inside of a wall provided with reinforced concrete for outer wall body and exterior facing material for...
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JPH11220323A |
To lower a side lobe by smoothly increasing the radio absorption amt. of a radio wave absorbing body in the radial direction of a mirror surface and eliminating the discontinuity of an electric field opening distribution by the radio wav...
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JP2931588B1 |
To provide an electromagnetic wave absorbing device and a method which can reliably absorb electromagnetic waves radiated from a portable telephone set, etc. An antenna conductor pattern 18 of an antenna for receiving an electromagnetic ...
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JPH11214912A |
To reduce the effects due to electromagnetic waves on a human body. In an antenna which includes a holder part 4 fixed to a housing 1 of radio equipment, a 1st antenna part 10 that moves through the part 4 a freely slidably a stopper par...
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JP2918511B2 |
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JP2917271B2 |
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JPH11186837A |
To obtain a desired excitation distribution by interrupting an electric coupling between feeders and between a feeding circuit network and a radiation element, and to reduce a loss in the feeding circuit network due to an undesired mode....
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JPH11163585A |
To eliminate polarization dependence of an electromagnetic shield using a dipole antenna, by providing an electromagnetic control body having conductive material-made loop antenna elements on the surface of a transmittable base to amplif...
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JPH11163622A |
To reduce the outermost diameter of a spiral antenna without changing the lower working frequency limit of the antenna by connecting a radio wave reflection suppressing member to the end point of a conductor line. Extension lines 1e and ...
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JP2903165B2 |
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JPH11150393A |
To obtain a transparent radio wave absorber which can absorb and reflect radio wave intensively by substantially equalizing the radio wave impedance viewed from the high resistance side and the radio wave impedance in free space. A radio...
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JP2894325B2 |
A structure (100) for shielding an electronic circuit (220) from radio waves is characterized by that the shield case (300) is formed therein with a cavity which is open in one side (310), that a first electrically conductive layer (330)...
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JPH11126992A |
To provide an electromagnetic wave shielded building which allows only desired selected electromagnetic waves to pass through the building. A part of a conductive member provided, related to an electromagnetic wave shielded building for ...
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JPH11121964A |
To avoid leaking of electromagnetic waves from a portable telephone by forming a space by compositing a synthetic resin for housing the telephone on one side of an Al foil, and forming a printed or colored layer on the surface thereof. T...
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JP2885594B2 |
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JPH11112189A |
To improve comfort in use in addition to an electromagnetic inhibition function, by providing an aromatic function to a compound magnetic material in the interference inhibitor of electromagnetic noises using the compound magnetic body c...
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JPH11112229A |
To provide a composite magnetic body that is placed in a narrow case, adopted even for a part receiving a heavy load, and is applicable to an electromagnetic interference suppression body with flame resistance, to provide its manufacture...
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JPH11112185A |
To increase the amount of transmission attenuation by fitting a noise absorption core to a cable, by covering the noise absorption core and the cable by a conductor from the surface of the noise absorption core, and by fixing the noise a...
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JP2883497B2 |
PURPOSE: To resolve radio wave faults by canceling reradiated radio waves from power lines with simple structure by canceling the reradiated radio waves from the conductors of transmission lines with the phase difference of reradiated ra...
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JPH11103189A |
To provide a conductive seal which prevents matter from migrating, shuts off the electromagnetic waves of an electronic module housed in a conductive housing, effectively seals a narrow space at low cost, is high in elasticity, and is ma...
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JPH1197246A |
To easily provide a method for fixing a noise-absorbing core to a cable, for lighter weight and smaller size. A noise-absorbing core main body 3 and a lid part 4 of soft magnetic powder and organic binder of rubber hardness 60 or less ar...
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