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Matches 501 - 550 out of 2,723

Document Document Title
WO/2001/069718A1
A grating comprising a plurality of substantially parallel members having a conducting surface of depth L, separated by a dielectric layer gap, and having of pitch $g(l)¿g? and where L>16$g(l)¿g?. The members are preferably metallic or...  
WO/2001/067553A1
Microstructured materials which can be tuned to a particular range of r.f. frequencies to display particular magnetic permeabilities have been proposed. A typical material is made of an array of capacitive elements e.g. spirals or rolls ...  
WO/2001/059873A2
An antenna unit for use in a mobile telecommunications network, which is capable of transmitting and receiving radio signals from the inside of buildings to and from mobile terminals operating in the network. The antenna also prevents th...  
WO/2001/057953A1
System and method for improving the interference resistance of a radio frequency, RF, antenna system through passive prescreening of the RF energy incident upon the antenna. The invention physically partitions the RF environment into two...  
WO/2001/052355A1
The inventive radioabsorbing coating is made of a radioabsorbing material comprising the following: a synthetic glue 'Elaton' based on latex as plastic binder, and powdered ferrite or carbonyl iron as magnetic extender. The mixing ratio ...  
WO2000033414A9
A microwave device operating at a selected frequency band or group of selected frequency bands of interest includes a resonant bulk material having one or more conductivity bandwidths corresponding to the selected frequency band or group...  
WO/2001/049984A2
A method for reducing the acoustical noise, sonar cross-section or radar cross-section of an object, in particular low frequency sonar noise, is provided comprising contacting the object with a polymer that has been optionally modified t...  
WO/2001/050545A1
Disclosed is an antenna having an electromagnetic radiation blocking function and a fabrication method thereof. A helical line is formed by winding a copper wire on a helical groove formed on a core, or using a spring instead of the core...  
WO/2001/044839A1
A surface capable of supporting surface charge oscillations and exhibiting a profiled grating, said profile comprising at least two superposed periodic profiles. The surface has applications as radar absorber and authentication devices. ...  
WO/2001/041255A1
There is disclosed a microwave absorbing structure which comprises a non-conductive matrix within which are embedded a plurality of spatially-separated ferro- or ferri-magnetic particles, each of which particles has a largest dimension n...  
WO/2001/037440A1
The invention relates to a holder for a stone (2) for providing protection from the electromagnetic radiation from electronic devices. The inventive holder has a fixing device for fixing to another object, especially to a device that pro...  
WO/2001/029523A1
An apparatus and a method for determining the liquid (1) level in a tank (2) by means of a radar level measuring device (6), which transmits microwaves downwards to the surface of the liquid (7) through a waveguide (5), in the form of a ...  
WO/2001/029850A1
A composite magnetic body 1, comprising a soft magnetic powder (2) and a binding agent (3), in which the specific surface area of the soft magnetic powder (2) is 0.1-3 m?2¿/g. The surface state of the soft magnetic powder contained in t...  
WO/2001/029851A1
A composite magnetic body is obtained without the use of halogen-based or halogen-containing materials, such as, halogen-based binding agent of halogen-based resins or elastomers, and bromine-based fire retardants. The composite magnetic...  
WO/2001/027869A1
A communication device wherein the electric circuits other than the antenna are enclosed with a radio wave shield material for cutting off a radio wave, a radio wave absorbing material for attenuating a radio wave in a predetermined freq...  
WO/2001/015274A1
A radiation absorber comprising a substrate having free charges capable of being driven to form resonance charge density oscillators and a dielectric layer coated onto said surface wherein the dielectric layer has a textured/patterned su...  
WO/2001/001519A1
A directional antenna, on a periphery or one side of which is provided an electromagnetic interference suppressor (3) composed of the magnetic compound that contains oxide-coated magnetically soft powder. This antenna is suitable for a s...  
WO/2000/055566A1
The invention relates to novel camouflage means for the camouflage of objects having a low or increased temperature, whereby said means can be used in a universal manner. A camouflage layer is preferably provided for the visible spectrum...  
WO/2000/051200A1
An antenna structure including a ground plane (12) that provides a good front to back ratio while maintaining a small size and which can mechanically be made to fit into tight areas. The antenna structure may be a GPS patch antenna (10),...  
WO2000013965A9
A method of camouflaging an object which emits infrared radiation by forming a binder (30) upon a substrate (S) wherein microcapsules which absorb infrared radiation are (10) are submersed within the binder.  
WO/2000/041270A1
A structure (2) which exhibits magnetic properties when it receives electromagnetic radiation (20) is formed from an array of capacitive elements (4) each of which is smaller, and preferably much smaller, than the wavelength of the radia...  
WO/1999/065109A1
A device (1) for discharging an absorber element (2) for electromagnetic radiation generated by electrical or electronic members, such as an electronic processor, a portable telephone, a watch or the like, said absorber element (2) compr...  
WO/1999/041962A1
A radio wave absorber is simply, quickly and stably attached. A method and structure for attaching a radio wave absorber is characterized in that a plurality of ferrite plates (4) are jointed to a shield plate (2) provided on a ceiling, ...  
WO/1999/041961A1
A method for attaching a radio wave absorber readily and stably in a short time, characterized by joining panels (3) which have respectively a plurality of ferrite plates (4) joined to the surface of the panel (3) to a shielding plate (2...  
WO/1999/032740A1
Disclosed is a facing panel (1) for the façade of a building wall, comprising a resistive coating (6) arranged in the area of the facing panel (1). In order to improve such a facing panel, said panel (1) consists of a front (2) and a re...  
WO/1999/027612A1
The invention relates to a method for producing a radar reflection diminishing structural component comprised of a core element. The structural component is preferably comprised of a honeycomb core or a substrate especially for a two-dim...  
WO/1999/025166A1
A radio wave absorber which has both inflammability and flexibility and is advantageous from the viewpoints of lightweightness, heat insulation, soundproofness and soundshielding, and the freedom of shaping owing to the easiness of proce...  
WO/1999/016090A1
A radio wave absorbent comprising, as a main component, a magnesium-zinc base ferrite material containing 45 to 50 mol % of iron oxide, 7 to 19.7 mol % of magnesium oxide, 24 to 28.5 mol % of zinc oxide, 4 to 16 mol % of copper oxide and...  
WO/1999/013697A1
A field erectable nonflammable radio wave absorber which comprises a main radio wave absorbing member fixed to a wall surface, a ceiling surface or a floor surface of a radio wave darkroom, and a cap put on the main radio wave absorbing ...  
WO/1999/005752A2
An absorber includes a plurality of shredded foam particles and a plurality of fiber whiskers. The fiber whiskers are interspersed among, and attach to the shredded foam particles to create a foam-fiber mixture. A curable adhesive is add...  
WO/1999/003167A1
A hand-portable telephone including a casing (1), an antenna device (7) with at least one radiating element (7a, 7b) located in said casing, and a protective device for absorbing a substantial part of the electromagnetic energy being rad...  
WO/1998/058423A1
An antenna applied to satellite communications wherein a plurality of planar radiating elements are arranged below an earthing conductor of a microstrip planar antenna, and connected to the earth conductor by electrical connecting means....  
WO/1998/044772A1
A radio wave absorbing panel is made up of a first insulating substrate and a second insulating substrate disposed in parallel a predetermined distance apart and a middle insulating substrate disposed between and parallel with the first ...  
WO/1998/038518A1
A plastic body, in particular flat element, limits the reflection of high-frequency radiation in HF-shielded areas, such as computer installation sites, HF-shielded rooms or the like, especially for carrying out measurement on high-frequ...  
WO/1998/038697A1
The invention relates to a housing (1) with radar-absorbent qualities, specially for a radar sensor in a motor vehicle, comprising electrically conducting particles whose dimensions are in keeping with the frequency of the radar beams to...  
WO/1998/035403A1
Disclosed is a microwave antenna array, consisting of a focusing means (11) and at least one supply element (10), in which at least one component support (14) comprising electronic or electrical components (16, 17) is arranged in an area...  
WO/1998/031072A1
An electromagnetic wave absorption panel (100) for use in building construction includes an absorber layer (106) that utilizes novel materials such as layered superlattice materials, garnets, magnetoresistive materials, conducting oxides...  
WO/1998/020577A2
A radio telephone, preferably intended for cellular telecommunication, has an apparatus housing (20) and at least one antenna (21), which is mounted to or in connection with the apparatus housing for performing the wireless communication...  
WO/1998/014962A1
A thin electromagnetic interference depressor effective in suppressing electromagnetic interferences of microwave band. As an electromagnetic interference suppressing material, there is provided a compound magnetic material which is prep...  
WO/1998/010440A1
Flat soft magnetic powder is dispersed in organic binder to prepare a composite magnetic material. By employing biodegradable plastic as the organic binder, the composite magnetic material can be dumped without causing pollution. The bio...  
WO/1998/010439A1
A composite magnetic material which is used as an electromagnetic interference suppressing material over a wide band in a high-frequency region is substantially made of powder of a soft magnetic material and an organic binder. In order t...  
WO/1998/008234A1
An EMI preventive part which has a sufficiently large shielding effect against the transmission of electromagnetic waves radiated outside from an active device without deteriorating the circuit function of the device and prevents malfunc...  
WO/1997/044857A1
RFI interference has for a long time posed problems to electronic engineers, for instance, and demands a serious approach to ensure the protection of apparatus against such interference and also to avoid interference radiation by such ap...  
WO/1997/042844A1
An energy conversion composition having the functions of absorbing and converting energy, such as mechanical energy, thermal energy, optical energy or electric energy, having an excellent performance and capable of reducing the thickness...  
WO/1997/016058A1
A radio communication device, such as a portable telephone set, or a beeper, and a cover into which such a communication device is inserted. The cover ensures the safety of the user of the radio communication device by blocking a signifi...  
WO/1997/008713A1
The invention is a radar absorbing material and a process for making same. In detail, the invention includes a binder material containing a mixture of two groups of spheres made of a magnetic material. The first group of spheres (30B, 30...  
WO/1996/040505A1
An infrared radiation-interactive article (10) comprising an oxidizable metal body (18) of a radiation-interactive size and shape, with an oxidation-promoting salt (20) in contact with the metal body (18), arranged so that in exposure to...  
WO/1996/021254A1
An improved antenna for a portable radio communication device including a first elongate electrically conductive member (10) having opposed first and second ends, the first end adapted to be mounted in electrical communication to a radio...  
WO/1996/010278A1
The proposed material comprises a non-metal base and applied thereto an electrically conducting covering including a layer of moderate electrical conductivity made of a composite of non-metal compounds and metals and situated immediately...  
WO/1996/008863A1
Arrangements essentially in the form of an antenna element (mpa) are located near a radiating conductor of the equipment (mp), so as to absorb electromagnetic energy reaching it by being coupled to the radiating conductor.  

Matches 501 - 550 out of 2,723