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JP2000258526A |
To realize a shield fence having high radio wave shielding effect, a radar and a manufacturing method of radar by an arrangement wherein the upper end part of a shield fence is included in the valley of directivity. The shield fence disp...
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JP2000232320A |
To realize a reduction in the cost and to suppress radio wave reflection for a radio wave absorber as a whole by using a mesh planar material made of conductive fiber as a resistance film in a resistance film type wave absorber maintaini...
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JP2000228607A |
To obtain a large absorption characteristic in a broad frequency band and to prevent a malfunction due to an externally incoming electromagnetic wave and an unspecified electromagnetic wave in a wide range generated inside communication ...
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JP2000223937A |
To provide a radio wave absorbing panel structure for a glass curtain wall which can absorb a radio wave having a different angle of incident over the broad frequency bands of VHF and UHF. A ferrite absorber has 15 to 40 mm width A and 4...
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JP2000216622A |
To make this wall light in weight and also to obtain the maximum value of reflection loss in an optional UHF frequency band by providing a 1st dielectric layer a resistor layer and a 2nd dielectric layer and specifying the surface resist...
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JP2000211964A |
To provide a method for producing soft ferrite or a porcelain electromagnetic wave-absorbing material on which soft ferrite is supported by firing the metal oxide mixture for the soft ferrite or the molded product for the porcelain elect...
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JP2000209023A |
To make a frequency band wide and to improve radio wave absorption characteristics by arranging ferrite absorbers of specified width and thickness continuously in the magnetic field direction of coming radio waves and at a prescribed gap...
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JP2000201018A |
To easily obtain excellent reflection attenuating characteristics by continuously arranging magnetic materials, and making it unnecessary to provide any gap for which precision is required by arranging a second magnetic material having s...
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JP2000196282A |
To provide an electronic circuit device which reduces the mutual interference caused by the electromagnetic coupling between circuit blocks, without changing the dimension, the space, etc., to the electromagnetic shield mechanism to a co...
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JP2000196283A |
To make a reflection coefficient small at frequencies 100 MHz and 200 MHz and to widen a frequency range wherein the reflection coefficient becomes small. Magnetic bodies 2 constituted of a soft magnetic material are disposed discontinuo...
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JP2000508874A |
PCT No. PCT/DE98/00343 Sec. 371 Date Mar. 24, 1999 Sec. 102(e) Date Mar. 24, 1999 PCT Filed Feb. 6, 1998 PCT Pub. No. WO98/35403 PCT Pub. Date Aug. 13, 1998A microwave antenna arrangement, made up of a focusing element and at least one f...
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JP2000174546A |
To provide a device for preventing a radio wave from being reflected by a building without using such expensive means as affixing an expensive material such as ferrite onto nearly the entire radio wave incident face of a building and wit...
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JP2000174545A |
To provide a transparent radio wave absorbing sheet that can suppress the reflection of a radio wave, provide transparency, can be comparatively excellently handled and continuously manufactured.The transparent radio wave absorbing sheet...
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JP2000151171A |
To secure shielding as needed in the structure of an electromagnetic shield window provided in an electromagnetic shield room or the like. In a conductive frame body 21 provided around an aluminum sash 17, a conductive window cover 11b m...
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JP3044078B2 |
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JP2000138492A |
To exhibit electromagnetic wave absorption power with practically allowable thickness by dispersing soft magnetic fine metal powder having grain size of specified value or below into a matrix of rubber or synthetic resin. A soft magnetic...
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JP2000137068A |
To enhance azimuth detection performance by reducing the amount of coupling between sending and receiving sides by means of simple constitution. Two opposed shield plates 13, 14 are provided between a sending antenna 11 and a receiving a...
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JP3041295B1 |
A composite electromagnetic wave absorber capable of restricting the height of a pyramidal electromagnetic wave absorber and being applied to a compact anechoic chamber, wherein an upper absorber (3) is fabricated by dispersing ferrite p...
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JP3041311B2 |
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JP2000134032A |
To make an absorber light in weight and also obtain the structure of a radio wave absorption panel corresponding to a wide band for both a VHF and a UHF by using a ferrite plate having specific width and thickness for the absorber. In a ...
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JP2000133983A |
To provide a matching radio wave absorbing body which can be easily regulated in matching frequencies and whose matching frequencies can be widened in band width. A matching-type radio wave absorbing body is equipped with a radio wave ab...
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JP2000133981A |
To provide a radio wave or a magnetic shield which is capable of shielding a target from magnetic waves or radio waves and formed as thin as prescribed keeping high in profitability. Aluminum foils 11a and 12a are provided as a pair of c...
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JP3038436B1 |
[wrap up] [Task] It provides a radio wave absorber with a Γ of 6 dB or more regardless of frequency at 18 to 100 GHz. It is a radio wave absorber having a conductor layer and a dielectric layer, the thickness of the dielectric layer is ...
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JP2000124732A |
To provide the portable telephone of a structure capable of smoothing the deterioration of the sensitivity of communication caused by the positional relation of the base station of the portable telephone and the electromagnetic wave prot...
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JP3036466B2 |
To attain miniaturization and to reduce cost by providing a radio wave absorber at one part of the ceiling around a transmitting/receiving means. A master transmitter/receiver 5 is attached on the ceiling T and transmits/receives communi...
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JP3036252B2 |
PURPOSE: To obtain a wave absorber and a wave absorbing wall using the wave absorber having light weight and easy manufacture while allowing to suppress transport cost low. CONSTITUTION: Two wave absorber plates 10, 11 composed of an ohm...
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JP2000114768A |
To allow electric wave absorption for wide frequency band and the electric wave at different incident angle, by providing a ferrite rod of specific relationship between width and thickness continuously in magnetic field direction, with a...
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JP2000114864A |
To provide a radio wave absorbing panel structure for a glass curtain wall having satisfactory radio wave absorbing characteristics to the radio waves over a wide frequency range in various incident angles.The glass, an air layer, a radi...
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JP2000114766A |
To prevent invasion of a radio signal into an electromagnetic shielding space through e.g. a ventilation port or leakage of the radio signal from the electromagnetic shielding space into the exterior.In an electromagnetic shield 1, a hon...
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JP2000114863A |
To absorb the radio waves over a wide frequency range in various incident angles.An exterior member, an air layer, a radio wave absorber and a reflector are arranged in this order. In this case, as the structure of the radio wave absorbe...
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JP2000114862A |
To provide a radio wave absorbing panel for a glass curtain wall having satisfactory radio wave absorbing characteristics to the radio waves over a wide frequency range in various incident angles.The glass, an air layer, a radio wave abs...
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JP3033369B2 |
PURPOSE: To utilize the radio wave absorber for window glass, etc., as an optical transparent radio wave absorber. CONSTITUTION: In a multilayer type radio wave reflector 51, in which resistance films having proper surface resistance and...
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JP2000106273A |
To provide a device and method which enabled a member made of a microwaves-absorbing synthetic resin to be uniformly heated, while being limited spatially.A device for heating a member made of a synthetic resin which absorbs microwaves i...
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JP3030453B2 |
To provide an electronic waves absorber having a more economical wide band electronic waves absorption characteristic and a physical lower height, the instant that this replies to a demand for increasing frequency used for electronic app...
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JP2000101338A |
To provide a technology that effectively reduces a local peak SAR (specific absorption rate) in the head of a user of the telephone set by suppressing the surface current which flows on a case of the telephone set.In a portable telephone...
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JP2000095947A |
To obtain a conductive resin composition which can give a molding having a high conductivity, excellent electromagnetic shielding properties, a high rigidity, and a reduced tendency to warp by incorporating a thermoplastic resin such as ...
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JP2000091780A |
To prevent leakage of electromagnetic wave with a simple configuration. An electromagnetic wave absorbing body comprises a flat plate part 2 of a strip-like metal plate and a cylindrical part 3 of a metal plate fitted to its end part. Wh...
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JP2000091839A |
To easily receive a radio wave propagated from a desired direction by installing a supply means supplying the radio wave which is made incident within the range of a prescribed angle to the front of an antenna to the antenna and a means ...
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JP3025538B2 |
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JP2000082893A |
To provide a radio wave absorbing body which is, being light, excellent in mechanical strength and incombustibility, and in radio wave absorbing ability as well. A conductive material of at least one kind of carbon black, graphite, and c...
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JP2000082892A |
To provide a radio wave absorbing body which is, being light, excellent in mechanical strength and incombustibility, and in radio wave absorbing ability as well. An incombustible layer 3 of at last one kind of an inorganic coating agent ...
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JP3023787B1 |
[wrap up] [Task] Conventional radio wave absorbers such as carbon and ferrite have very limited values of the electromagnetic parameters of complex permittivity, complex magnetic permeability, and complex electrical conductivity, and the...
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JP2000077883A |
To improve fire resistance and a wave absorption effect while obtaining light weight and high strength by composing an incombustible honeycomb radio-absorptive material of a honeycomb structure as the aggregate of a large number of cells...
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JP3019425B2 |
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JP2000068676A |
To provide a selective electromagnetic shielding block which is simple in structure and capable of electromagnetically shielding an object from electromagnetic waves of only prescribed frequencies, providing a high shielding effect at a ...
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JP2000068117A |
To provide electromagnetic wave absorbent which can be easily molded in a three-dimensional complex shape by injection molding and is excellent in electromagnetic wave absorbing property, and a manufacturing method of it. In electromagne...
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JP2000068677A |
To provide a selective electromagnetic shielding screen with high selective electromagnetic shielding function by alternately arranging a plurality of FSS (selective electromagnetic shielding) elements in normal positions and inversed po...
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JP2000068675A |
To provide a selective electromagnetic shielding device which is simple in structure and capable of electromagnetically shielding an object from electromagnetic waves of only prescribed frequencies and can be provided as an electromagnet...
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JP2000059256A |
To allow the antenna system to have provision for reception of an electromagnetic signal wave in wide directions in the standby state by moving vertically an electromagnetic wave shield plate to vary a shield state of an electromagnetic ...
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JP2000059088A |
To eliminate the need for much labor and complicated construction works or the need for ensuring a nearly complete contact structure for the joints for jointing the joints of a building material for electromagnetic shielding and never re...
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