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JPH0514439B2 |
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JPH0514440B2 |
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JPH0544047A |
PURPOSE: To realize simplification of pretreatment process, reduction in cost, and simplification of waste water treatment of an electroless plating method. CONSTITUTION: A material to be plated is treated at the temp. as high as about â...
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JPH0512880B2 |
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JPH054036B2 |
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JPH04361595A |
PURPOSE: To enable the radio wave absorption property of a radio wave absorbent to be enhanced in bandwidth and the radio wave absorbent to be lessened in thickness and manufactured at a low cost. CONSTITUTION: A copper-zonc ferrite radi...
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JPH0479369B2 |
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JPH04354103A |
PURPOSE: To obtain a wideband radio wave absorbing device which can be constituted economically, and a device which can be used for improving an existing radio wave absorbing device. CONSTITUTION: The title device is constituted by stack...
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JPH04352504A |
PURPOSE: To prevent beam width from being narrowed in the high frequency band of a used band. CONSTITUTION: Among radio waves made incident on a reflection plate 1, one part is absorbed by a radio wave absorber 3 stuck to the outer perip...
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JPH04352395A |
PURPOSE: To form a non-combustible wave-absorbing wall of high durability and high strength by using a cement wave absorber for high frequency containing ferrite powder having the mean particle diameter of a specific value and less. CONS...
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JPH0475167B2 |
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JPH04125305U |
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JPH04321491A |
PURPOSE: To reduce electric wave reflection by an airplane fuselage without impairing its strength and rigidity. CONSTITUTION: A plurality of pyramidal cells 1 whose surfaces do not form a right angle are furnished in contact with an out...
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JPH04316996A |
PURPOSE: To reflect radio wave regardless of the rear rim of a predetermined body to make acquisition by radar difficult by a method wherein an electroconductive thin film layer, whose rear end rim with respect to the estimated comming d...
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JPH04315302A |
PURPOSE: To precisely measure the electromagnetic shield effect of a ceiling by providing an umbrella in a freely opening/closing way to an antenna main body, providing an electromagnetic wave absorbing body to a rear side of the umbrell...
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JPH0468800B2 |
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JPH04304702A |
PURPOSE: To improve the gain of the antenna itself and to facilitate the design of a feeder by utilizing positively radiation from a discontinuous part and reducing the loss of the feeder. CONSTITUTION: A passive radiation element 8 of a...
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JPH04304700A |
PURPOSE: To provide a simplified manufacturing method for a radio wave absorber material powder which is excellent in terms of radio wave absorbing properties and is made of an Mn-Zn ferrite group. CONSTITUTION: This invention relates to...
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JPH04119114U |
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JPH04294599A |
PURPOSE: To obtain a electric wave absorber which does not deteriorate in its electric wave absorbing characteristic and can be reduced in thickness and weight as a whole. CONSTITUTION: This electric wave absorber is constituted by formi...
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JPH04115076U |
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JPH04505771A |
In the manufacture of PVC cellular plastic, a liquid plastic mixture is admixed with fibres in an amount of at most 1 percent by weight fibres, preferably carbon fibres having a length of about 1 cm, which fibres are distributed in the e...
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JPH04114212U |
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JPH04114211U |
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JPH04280105A |
PURPOSE: To improve the gain without increasing the size of the antenna itself and a device driving the antenna itself or the like. CONSTITUTION: The antenna is provided with an antenna main body 1 from which a radio wave is sent/receive...
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JPH0462200B2 |
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JPH04277906A |
PURPOSE: To improve the deterioration of the side lobe characteristic that is caused by the feeder extending between the mirror surface and the radiation part of a parabolic antenna. CONSTITUTION: A parabolic antenna have a feeder 3 cons...
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JPH04269898A |
PURPOSE: To obtain wide band radio wave absorbing characteristics. CONSTITUTION: A metal plate 1, a first radio wave absorber 3 provided in close contact with the surface of the plate at a radio wave incident side and having predetermine...
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JPH04110016U |
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JPH04257299A |
PURPOSE: To provide a radio wave absorbing system which is easily arrayed on the surface of an object, which is complicated in configuration, but requires the absorption of an external wave, as well as a system which is adjustable in wav...
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JPH04257300A |
PURPOSE: To adjust dielectric property of a shield by forming an electrically insulated porous base, manufacturing a first solution that contains a predetermined amount of a specific liquid monomer and a predetermined amount of a first s...
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JPH0496113U |
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JPH0491406U |
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JPH0447482B2 |
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JPH04206999A |
PURPOSE: To make absorption possible even in directions other than vertical or horizontal direction by uniformly placing the 1st wave absorbers, which have a conical shape and can handle insertion from selected electric field directions ...
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JPH0445001B2 |
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JPH04192602A |
PURPOSE: To increase a beam width reflected in a reflecting mirror and to facilitate the adjustment of the direction of the parabolic antenna by providing detachably an antenna cover made of a radio wave absorbing material to a circumfer...
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JPH0425673Y2 |
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JPH04150098A |
PURPOSE: To achieve wide-band characteristics and a thin body and then enable handing to be made easily when executing in terms of flexibility and machinability by laminating a magnetic material layer where a ferrite powder is mixed and ...
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JPH04502697A |
The receiving antenna comprises at least two sectors or areas (1, 2) of paraboloids which focus the radiation on their axes (xx') at points F1 and F2 respectively which are offset by an integer of wavelengths of the received radiation. E...
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JPH04140905A |
PURPOSE: To improve the isolation by placing a radio wave absorption body provided between a transmission antenna and a reception antenna between a radome and an antenna base. CONSTITUTION: A radio wave absorbing body 7 is provided on an...
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JPH0425723B2 |
An antenna is disclosed that is especially useful for radiating and receiving non-sinusoidal electromagnetic waves. The antenna is an efficient and distortion-free radiator of electromagnetic pulses that do not use a sinusoidal carrier. ...
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JPH0424840B2 |
A microwave absorber composed of dense silicon carbide having an electrical resistivity of one ohm-centimeter or more. In an electron linear accelerator, it is necessary to provide a microwave absorber to absorb excess energy used to acc...
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JPH04120903A |
PURPOSE: To adjust a half power angle uniquely decided to one array antenna by providing a wall-shaped projection for reflecting radio waves at a position symmetrical to right and left sides with the center line of the array antenna as a...
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JPH0422325B2 |
Low density compositions containing colloidal-size particulates of an ELM absorber such as Fe3O4 and a particulate of an ELM attenuator such as carbonyl iron dispersed in a dielectric matrix such as a styrene/butyl acrylate copolymer pro...
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JPH0436296U |
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JPH0411375Y2 |
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JPH0431807U |
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JPH0479300A |
PURPOSE: To absorb low frequency radio waves efficiently by laying out a constitutional body which comprises a plurality of conductive resistor-formed radio wave absorbing materials arrayed in a laminated manner at an inner wall in a che...
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JPH0427611U |
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