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Matches 551 - 600 out of 2,723

Document Document Title
WO/1996/002954A1
The present invention is applicable to the art of identification, interrogation and communication equipment. The present invention has particular application to equipment used in conjunction with smart cards, tags and like apparatus and ...  
WO/1996/001912A2
An article (130) comprising a non-conductive substrate (136), preferably of an environmentally degradable character, having a thickness of an oxidizable metal coating (138) thereon, and optionally an oxidation enhancingly effective amoun...  
WO/1996/000992A1
An energy absorbing arrangement suitable for use in anechoic chambers comprises an assembly of elongate planar strips arranged in two sets of parallel strips in a crossing relationship. The strips carry energy absorbing material and in o...  
WO/1996/000454A1
A panel of microwave absorbent material comprises at least one layer of a ferrite substrate, a backing reflector capable of reflecting incident radiation, and means for applying a magnetic field to the substrate. The applied field change...  
WO/1995/033515A1
In order to provide a device for the control of oscillating electromagnetic fields, in particular those from mobile radio transmitters, so that detrimental frequency-intensity spectra are converted into largely innocuous spectra, the inv...  
WO/1995/033699A1
A magnetodielectric ceramic composite material comprising a first disperse phase which contains one or more magnetic ferrites, and a second, essentially continuous phase which contains electrically insulating oxides, characterized in tha...  
WO/1995/030229A1
A protective device is disclosed for shielding people from high-frequency electromagnetic fields and/or to provide camouflage against heat-imaging systems. The proposed device is designed as a suit which surrounds an individual and is ma...  
WO/1995/028014A1
The invention relates to a panel (1) for use in building, and to a method of making such a panel. The panel comprises a moulded body (2) and an absorber (3) for absorbing incidient electromagnetic energy in the radar range frequencies, i...  
WO/1995/007603A1
A form in place conductive gasket is disclosed. The gasket, foamed, gelled or unfoamed is made of one or more elastomer resins, such as silicone urethane and/or thermoplastic block copolymers and is either filled with a conductive filler...  
WO/1995/005128A1
The embodiments of the inventions disclosed in this application develop a "protection" electric, magnetic or electromagnetic field or fields which are either superimposed upon an ambient field which is detrimental to the health of living...  
WO/1995/005013A1
An absorber (2) and a method for constructing such absorber is provided for use, for example, in an anechoic chamber. The absorber includes one or more backing layers (8) and at least one tapered section (4) extending therefrom. The tota...  
WO/1995/000983A1
In order to absorb electromagnetic waves in a measurement chamber, the sidewalls and the ceiling of the chamber are lined with contiguous pyramids (20). The pyramid vertices point into the chamber. The structure element (20) has a frame ...  
WO/1994/027109A1
Anti-radar nets consisting of a fabric and a coating layer on both sides of the fabric, in which the weft threads of the fabric are provided with metal fibres and at least one of the coating layers is provided with carbon fibers, and pro...  
WO/1994/024724A1
A radar absorbing material comprising multiple layers integrated to form a thin, flexible, and lightweight structure. The material includes a substrate (12) having disposed thereon absorber elements that are resistively loaded to enable ...  
WO/1994/018817A1
A device for radio communication (PH), such as for example radiophone, which includes a shielding layer (RFS) which under operating conditions is between the antenna means and the user. Said shielding layer (RFS) reduces electromagnetica...  
WO/1994/013878A1
Textile materials having radar attenuating properties comprise a polymer enclosed scrim characterised in that the material further comprises hollows which are at least partially filled with radar attenuating material. Preferred embodimen...  
WO/1993/025270A1
The disclosed device comprises a container (1) intended to be placed in the vicinity of the source of said radiation and containing a medium (6) which has been subjected to prior irradiation and a metal salt or a combination of metal sal...  
WO/1993/024307A1
A method for making a material with an artificial dielectric constant is carried out by choosing the desired dielectric constant for a particular electromagnetic field, selecting a substantially non-electrically conductive sheet material...  
WO/1993/023892A1
Device for the reduction of the electromagnetic energy reflected by any given structure, at the lowest radar frequencies, consisting of relatively thin panels, spaced regularly and symmetrically (Figure 1) on the structure to be protecte...  
WO/1993/023222A1
A fabric having both a high degree of user comfort and a high degree of Ultraviolet Radiation protection is provided. The preferred yarn is at least 40 Denier by 40 Denier, preferably 70 Denier by 2 \ 70 Denier Nylon Yarn. The yarn is wo...  
WO/1993/023893A1
An electromagnetic energy absorbing structure (20) provides a base structure (22) having an electrically conductive ground plane (38) positioned thereover. At least one dielectric (36) and one impedance layer (32) are positioned over the...  
WO/1993/015530A1
Absorbers of electromagnetic waves in closed and shielded rooms consist of three-dimensional bodies made of foam material impregnated with finely dispersed conductive materials and arranged close to each other on the wall of the room to ...  
WO/1993/009944A1
A coating (14) comprising an inert base material (15) having dispersed therein particles of metals (16) capable of reflecting or absorbing electromagnetic radiation. The coating process may be applied to lightweight gray goods (12) which...  
WO/1993/008586A1
Described is a microwave-absorbing component comprising a substrate made of electrically insulating material and, applied on the substrate, a film 5 to 50 nm thick, the surface profile of the film being selected to give the required radi...  
WO/1993/005960A1
Weather-resistant electromagnetic radiation shielding materials and structures for electromagnetic interference attenuation for electronic equipment situated in unshielded outdoor housings are described.  
WO/1993/000786A1
Method for fabricating a screen absorbing electromagnetic radiation, comprised of a planar, carbon filled, honeycomb type structure, having an impedance gradient varying as a function of the thickness according to any predetermined law, ...  
WO/1992/022193A1
A carbon fiber containing composite material whose carbon fibers are aligned in one direction is so disposed that the alignment direction is the same as that of the electric fields of electromagnetic waves W to be absorbed.  
WO/1992/016033A1
The component disclosed consists of an electrically non-conducting solid, such as lime sandstone, gypsum or a ceramic-type preparation, in which particles of a material which particles of a material which is electrically conducting in th...  
WO/1992/015995A1
A new category of ferromagnetic materials consists of two phases, namely a hard magnetic phase and a soft magnetic phase, which are structured by interchange coupling of the spins of the two phases. Preferably the weak magnetic phase is ...  
WO/1992/002973A1
The invention relates to a building component (1) adapted for absorbing incident electromagnetic energy in the radar range of frequencies particularly between 1 and 1.1 GHz, comprising a substrate in the form of a receptacle or tray (2) ...  
WO/1991/020179A1
A body for absorbing electromagnetic waves having a good absorption characteristic in a wide frequency band. This body is provided with a ferritic tile body (12) for absorbing electromagnetic waves and a dielectric body for absorbing rad...  
WO/1991/012173A1
A composite structure (64) is disclosed for placement on an air, land or sea vehicle to attenuate electromagnetic waves and to break up ice accumulation which might occur under adverse weather conditions. The upper section (22) of the st...  
WO/1991/008576A1
The composition of the invention contains finely divided particles, with a diameter not exceeding 1 $g(m)m, together with a ceramic powder designed to form a matrix surrounding the finely divided particles, dispersed in a dispersion medi...  
WO/1991/006988A1
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...  
WO/1991/005979A1
Self-protonated sulfonic acid substituted polyaniline compositions, processes for their preparation and uses thereof. The sulfonated polyaniline compositions are useful for conduction of electricity, absorption of electromagnetic radiati...  
WO/1991/005376A1
The disclosure relates to a bulk RF absorber (100) and a method for constructing the same. The absorber is composed of multiple sheets of a reticulated dielectric material (102), each sheet being coated with at least one layer of radiati...  
WO/1990/013155A1
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...  
WO/1990/010959A1
An antenna (5) having driven colinear dipole array (18) and passive slot array (14). Dipole array (18) comprises active elements (34) and phasing bars (36). Slot array (14) comprises two passive elements (35) having slots (28, 30, 32). A...  
WO/1990/004210A1
Materials which reflect diminishingly small electromagnetic energy are disclosed. In accordance with preferred embodiments, composite materials are made by embedding chiral structures in a host medium. The composites so obtained have low...  
WO/1990/000342A1
The first invention provides an electromagnetic wave absorber comprising: a current conversion element of the form of a flat plate arranged in a direction at right angles with the electric field of electromagnetic waves to convert incide...  
WO/1989/006338A1
A means of reflecting and emitting electromagnetic energy in an appropriate wavelength band comprising an arrangement (10) of surfaces (11) which are reflective to energy in that wavelength band and energy emitters (12) having an emissio...  
WO/1989/000754A1
In a process for manufacturing a material having predetermined dielectric, pyroelectric and/or magnetic properties use is made of the fact that the electrical properties of mesoscopic particles (approximately 1 nm to 100 nm), for example...  
WO/1988/001363A1
Web material for camouflaging against electromagnetic radiation whereby the material (1) comprises several layers (4, 5, 6) against the electromagnetic radiation which is directed against the material, whereby the material is provided wi...  
WO/1987/005705A1
A null processing receiver apparatus that receives and combines together a number of modulated information signals in such a fashion that an interference or jamming signal superimposed on each received signal is substantially eliminated ...  
WO/1986/006550A1
In the preferred embodiment the compact antenna range (10) includes two shaped reflectors, a subreflector (14) and a main reflector (16) arranged in an offset configuration. Each reflector is shaped so that the reflected wave front from ...  
WO/1985/004527A1
A conical horn microwave antenna has a reflector (15) positioned at the large end of a conical feed horn (17) which has the side walls (26) of the horn (17) wider than the projected effective area of the reflector (15) such that microwav...  
WO/1985/002265A1
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...  
WO/1982/004357A1
A feed horn for a reflector-type microwave antenna comprises a smooth-walled conical horn (10) and a lining of absorber material (22) on the inside wall of the horn for reducing the width of the RPE (radiation pattern envelope) in the E ...  
JP7445159B2
There is provided a radio wave absorbing material comprising a fluoropolymer. The fluoropolymer preferably contains a vinylidene fluoride unit, and more preferably contains a vinylidene fluoride and a tetrafluoroethylene unit.  
JP7444152B2
In a battery pack having a housing, battery modules composed of a plurality of battery cells, acquisition units equipped with slave antennas, and a monitoring device equipped with a parent antenna, the monitoring device and the acquisiti...  

Matches 551 - 600 out of 2,723