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Patent Searching and Data


Matches 901 - 950 out of 2,786

Document Document Title
JP2003249787A
To provide a panel for radio wave absorption which can effectively exhibit absorbing performance of radio waves both in a VHF band and in a UHF band which a ferrite tile has.In the panel for radio wave absorption which is to be fixed to ...  
JP2003243920A
To provide a radome capable of reducing or eliminating ground clutter and unnecessary echo from a low-lying object or the like.The radome comprises a transmission radome part through which a radio wave sent/received by an antenna is tran...  
JP3466129B2
To provide an electronic toll collection system preventing a multipath in a tollgate by devising the configuration and structure of the tollgate. In the electronic toll collection system for automatically collecting tolls by performing r...  
JP3463189B2
To provide an electromagnetic interference suppressor which can be fixed to an electric device, etc., without deteriorating its characteristic and its fixing method, and to provide a device and a part which use the electromagnetic interf...  
JP2003227110A
To provide an ETC system electromagnetic wave absorbing soundproof wall capable of absorbing -10 dB or more of an electromagnetic wave at a wide angle such as an angle of incidence in a high frequency zone of 4 to 6 GHz used by the ETC s...  
JP2003229691A
To develop a radio wave absorbent which is excellent in radio wave absorbing properties, superior enough in shock resistance so as not to be chipped or damaged when it is manufactured or in use, and high in productivity.This radio wave a...  
JP3458150B2
To provide a noise absorption core wherein magnetic efficiency is raised by lighter weight and improved degree of freeness. A base part 1a and sandwiching parts 1b and 1c extending in a specified direction from one end and the other end ...  
JP3459630B2
To provide a radio wave absorbing panel, into which foreign substance such as water, dust or exhaust gas or the like is less likely to penetrate into, and which is lightweight and thin and has sufficient radio wave absorbing performance....  
JP3456512B2
To realize indoor radio communication with high quality by means of a simple antenna configuration by reducing multi-path fading. Let a height of a ceiling 4 in a room be H, a height from a floor 1 to an antenna 8 of a terminal station b...  
JP2003218630A
To provide an antenna system capable of suppressing decreasing the amount of diffracting scattering waves and reflected waves propagated along a radome.In the antenna system provided with a radiation element, a reflection mirror and the ...  
JP2003523118A  
JP2003198412A
To reduce the specific absorption rate (SAR) when using a miniaturized communication equipment such as a portable telephone terminal.In the area a near the magnetic field generated in a portable telephone terminal 10, anisotropic magneti...  
JP3448012B2
To provide an electromagnetic-wave absorbing material and its manufacturing method wherein its electromagnetic-wave absorbing ability is large and its absorbing performance for absorbing an electromagnetic wave projected on its incidence...  
JP2003178341A
To reduce a wrong communication in an ETC antenna to be set in a form for radiating electromagnetic wave from the roof of a tollhouse to a road by allowing the limitation and control of the radiating range of electromagnetic wave to prev...  
JP2003179382A
To provide a UHF radio wave adsorbing panel which is inexpensive, easily designed, and excellent in radio wave absorbing properties.A radio wave absorbing panel is equipped with radio wave absorbing materials 2 which are provided as spac...  
JP2003179428A
To provide a broadband antenna, having a tapered slot antenna structure capable of easily changing the polarized wave faces and making the body small, when it is formed in an array form.Each tapered part 6 of a plurality of tapered slot ...  
JP2003176581A
To provide a radio absorbing back board of a glass curtain wall having high energy saving performance having improved heat insulation performance while keeping radio absorbing performance.This radio absorbing back board 11 has a heat ins...  
JP3435916B2
To smoothen change in the gain of an array antenna in the case of beam scanning by arranging a radio wave absorber at a position on an element antenna board where no element is in existence, thereby suppressing multiple reflection with a...  
JP2003152435A
To provide a communication facility and an electromagnetic wave shield in which health trouble due to electromagnetic wave can be reduced while sustaining the communication function of an electromagnetic wave transmitting facility, e.g. ...  
JP2003152436A
To provide a communication facility in which health trouble due to electromagnetic wave is reduced while sustaining the communication function of an electromagnetic wave transmitting facility, e.g. a repeating antenna.In the communicatio...  
JP3432891B2
PURPOSE: To obtain a further strongly suppressed coupling of an E field without a remarkable decrease of a B field by placing at least one plate or at least one of the layered shielding elements consisting of an insulating and dielectric...  
JP2003152438A
To provide an antenna unit.The antenna unit comprises an antenna for receiving the electromagnetic wave of an object being measured, and means disposed in the center of the antenna while surrounding it and reflecting or converging the el...  
JP2003516623A  
JP2003129480A
To obtain an electromagnetic wave absorbing slope that can produce an electromagnetic wave reflection prevention function.In an electromagnetic wave absorbing and heat generating slope 10, a three-dimensional net 12 in a predetermined th...  
JP3422709B2
To provide an electric wave absorbent having ≥20 dB reflection attenuation in low frequency region, having thin matching thickness and capable of reducing production cost. This electric wave absorbent is obtained by sintering a MnNiCuZ...  
JP2003123111A
To limit error communication between adjacent lanes in a communication system a between road and vehicle.A radio wave leakage limiting wall 11 for limiting communication between an on-vehicle equipment 3 loaded on a vehicle 3a passing a ...  
JP2003115694A
To provide a wave absorber for which a noise absorption performance is easily fixed and a manufacture cost is reduced, and an electronic appliance provided with it.The wave absorber A is arranged near a noise generation source inside the...  
JP2003110351A
To reduce the generation of the distortion of the directivity of a GPS antenna apparatus of a GPS car-navigation apparatus, which is caused by its interference with the components present in its periphery generated when disposing it on o...  
JP3417048B2
PURPOSE: To obtain a thin type wave absorber having no polarization dependence, being easy to design and manufacture and enabling effective suppression of reflection in regard to an oblique incident wave as well. CONSTITUTION: A wave abs...  
JP2003101327A
To provide a helical antenna that does not become complicated in shape nor larger in size as a whole while the disturbance of its radiation pattern is suppressed.This helical antenna is provided with an antenna element 1 which radiates r...  
JP2003512614A  
JP2003090885A
To provide an antenna device for underground radar having no dead angle in the propelling direction of a drill head P at the tip of an underground excavator.In this antenna device for underground radar, a dipole antenna AT having a struc...  
JP2003086986A
To obtain propagation conditions near those of a free space by suppressing a reflected wave by a reflection surface directly under a direct wave path connecting a transmission point to a receiving point without causing losses to the dire...  
JP2003078326A
To provide a method of evaluating an electromagnetic wave transmission structure which enables the analysis of the electromagnetic condition in a scale of the body of an aircraft, taking electromagnetic wave characteristics of a heteroge...  
JP3384353B2  
JP3404618B2
To obtain a composite magnetic substance that greatly absorbs electromagnetic waves and is excellent in electromagnetic interference suppression effect, by employing as it material a magnetic material electrically non- conductive and com...  
JP2003069282A
To provide a specified electromagnetic wave transmitting plate capable of shielding or transmitting electromagnetic waves of specified frequencies and suppressing incident heat rays.The specified electromagnetic wave transmitting plate 1...  
JP2003069279A
To prevent radio waves causing ill effects due to electromagnetic waves although strong electromagnetic waves must be emitted in additionally providing a base station for a mobile telephone system.Preferably, ill effects due to electroma...  
JP2003064800A
To provide a radio wave absorbing panel which is formed not of a single broad plate but of a plurality of separate tabular outer finish tiles or the like, as an outer finish material, wherein the panel is produced by minimizing complicat...  
JP2003064798A
To eliminate an inconvenience of a radio wave absorbing panel set at a structure such as a steel tower, and to provide a radio wave absorbing lattice which does not generate large wind pressure even if wind blows on the same, nor mar the...  
JP2003064802A
To provide a radio wave absorption panel having an exterior material having a large adhesion force, having low cost, and being usable for VHF and UHF in common.This radio wave absorption panel is constructed in such a way that a nipping ...  
JP2003508945A  
JP2003060383A
To provide an electromagnetic wave absorbing sheet which displays superior absorption characteristics over a wide high frequency band and is easily thinned. The absorptive sheet 1, 1a comprises a sheet body 2 made of polypropylene (insul...  
JP2003051715A
To provide an antenna whose substantial gain characteristic can stably be ensured even when the antenna is installed in a limited space of a communication device that can easily be designed without causing adverse effect such as electrom...  
JP2003013453A
To obtain an electromagnetic-wave absorbing bedrock capable of imparting an electromagnetic-wave antireflection function to the inclined face of a slope and a vertical wall surface.In an electromagnetic-wave absorbing heat-generating bed...  
JP2003008279A
To provide a transmission-type radio wave absorbing apparatus and a radio wave reflecting method, which can be easily manufactured, while avoiding reflection of the radio waves to the incident side.The transmission-type radio wave absorb...  
JP2003008278A
To provide a convenient electromagnetic wave removing means capable of removing or reducing electromagnetic waves, in a living space or the like by mounting at an adequate position in the living space such as inside rooms.The tool is ess...  
JP2002374092A
To provide a heat dissipating radio wave absorber having an excellent thermal conductivity and exhibiting excellent radio wave absorption characteristics in a high frequency band of sub-microwave band or above. A mixture composition wher...  
JP2002359512A
To provide a countermeasure for suppressing the influences of electromagnetic waves emitted from the antenna of a portable telephone set on a human body, especially on the head to a minimum. A countermeasure against the influences of an ...  
JP2002353733A
To provide a wireless terminal that can attain downsizing and weight reduction and reduce the SAR(Specific Absorption Rate) which is a power of an electromagnetic wave emitted from a wireless terminal per unit time/unit mass absorbed by ...  

Matches 901 - 950 out of 2,786