Matches 151 - 200 out of 253 < 1 2 3 4 5 6 >
Match Document Document Title
5230763 Process for manufacturing a surface element to absorb electromagnetic waves  
A process for the manufacture of a surface element in the form of a lamellar mat or sheet which can be used for the absorption of electromagnetic waves, in particularly radar waves. The surface...
5229773 Chiral absorbing structure  
An absorbing assembly for absorbing electromagnetic radiation in the range 10 MHz to 100 GHz comprises a lossy dielectric material and chiral elements disposed outside the lossy dielectric. The...
5212488 Ellipsoidal chaff  
The present invention provides reflecting chaff microellipsoids having a surface of electrically conducting material. A preferred embodiment consists of S i O 2 (95%), Na 2 O (1%), B 2 O 3 ...
5208599 Serrated electromagnetic absorber  
Electromagnetic absorber having serrations on a surface or surfaces thereof to reduce reflectivity of incident electromagnetic waves thereon. The serrations form a plurality of fins, the height of...
5202535 Chiral absorber  
An absorbing assembly for absorbing electromagnetic radiation in the range 10 MHz to 100 GHz comprises a lossy dielectric material and chiral elements disposed outside the lossy dielectric. The...
5202688 Bulk RF absorber apparatus and method  
A bulk RF absorber and a method for constructing same. The absorber is composed of multiple sheets of a reticulated dielectric material, each sheet being coated with at least one layer of radiation...
5179381 Electromagnetic wave absorber for VHF to UHF band  
An electromagnetic wave absorber available for a VHF to UHF band is implemented by a conductive film, a magnetic film laminated on the conductive film and back-plated with a metal film, and the...
5169713 High frequency electromagnetic radiation absorbent coating comprising a binder and chips obtained from a laminate of alternating amorphous magnetic films and electrically insulating  
Radiation absorbent coating and process for its production. The radiation absorbent coating comprises a binder and chips able to absorb ultrahigh frequency electromagnetic radiation. The chips...
5148172 Absorbing coating, its process of manufacture and covering obtained with the aid of this coating  
Absorbing coating, its process of manufacture and covering obtained with the aid of this coating. The coating is characterized in that it comprises a binder (34) and a load consisting of chips (C)...
5134405 Electromagnetically anechoic chamber and shield structures therefor  
The present invention relates to an electromagnetically anechoic chamber for EMC (Electromagnetic Compatibility) tests of electronic devices. The floor, ceiling and side wall of the anechoic...
5121122 Facade construction for high structures  
In a facade construction of high-rise structures, a corresponding layer construction is provided for suppressing reflections of incident electromagnetic waves, particularly of radar waves. For this...
5110651 Dielectric or magnetic anisotropy layers, laminated composite material incorporating said layers and their production process  
Dielectric or magnetic anisotropy layers, laminated composite material incorporating said layers and their production process. The laminated material has at least two stacks of assembled layers, a...
5103231 Electromagnetic wave absorber  
Disclosed is a wave absorber, comprising a wave absorbing panel prepared by forming a mixture containing a ferrite powder, a metal fiber, a molding material and a resin into a framework, by means...
5099242 Novel shielding, reflection and scattering control using chiral materials  
Electromagnetic and optical shields, controllers, and reflectors comprising chiral materials. Electromagnetic and optical controllers and layers provided in accordance with this invention comprise...
5099244 Support pylon for radar cross-section model testing  
The invention is a pylon for supporting a model above a ground plane for radar cross-section testing using a radar providing a specific frequency range and power distribution above the ground...
5095311 Electromagnetic wave absorbing element  
An electromagnetic absorbing element is comprised of an elongated rectangular body of dielectric material having a bottom portion attachable to an inner wall of an electromagnetically dark room,...
5093100 Plate-like magnetite particles, plate-like maghemite particles and processes of producing the same  
Disclosed herein are poreless, non-sintered plate-like magnetite particles having an average particle diameter of more than 0.5 μm and not more than 2.0 μm, and a BET specific surface area of not...
5085931 Microwave absorber employing acicular magnetic metallic filaments  
An electromagnetic radiation absorber is formed by dispersing into a dielectric binder acicular magnetic metallic filaments with an average length of about 10 micron or less, diameters of 0.1...
5084705 Facade construction in high rise structures  
Flat panel elements are placed ahead of structural parts reflecting electromagnetic waves, in the region of radar waves, in order to provide an absorption or reduction of the reflection. For this...
5083127 Thermal barrier facade construction of high rise structures and a process for fabrication of a thermal barrier  
It is intended to arrange a thermal barrier layer ahead of structural parts reflecting electromagnetic waves in the region of radar waves, in order to provide an absorption or a reduction of the...
5081455 Electromagnetic wave absorber  
For reduction in occupation space without sacrifice of the responsible broad bandwidth, an electromagnetic wave absorber for electromagnetic waves is provided with an absorbing sheet formed of a...
5057842 Outer wall of a structure located near a radar station  
In order to decrease the interfering reflection of radar radiation from building walls during radar surveillance on the ground, the outer walls are formed on their surfaces so that the reflected...
5055806 Reflection-free termination of a TEM waveguide  
A reflection-free termination of a TEM waveguide, in which a TEM wave is conducted through an inner conductor (4) and an outer conductor (1) and is absorbed at one end of the TEM waveguide by an RF...
5051747 Interface for cables  
A system for introducing N cables into an anechoic chamber, where N≥1 comprising a channel having an electrically conductive interior, and an electrically conductive entrance in communication...
5047296 Composite magnetic material and its production process  
The composite material comprises an alternation of amorphous magnetic material films based on cobalt, niobium and zirconium and electrically insulating material films (4), each magnetic film being...
4989006 Microwave absorption system  
Microwave absorption in a varying magnetic field is investigated near electron cyclotron resonance with a network analyzer which is capable of swept frequency measurements, and of measuring...
4972191 Wave absorber, and an anechoic chamber using the same  
A flat wave absorber having a conductive plate, a dielectric plate on the conductive plate, and, a ferrite plate on said dielectric plate, provides a wide operational frequency range from 30 MHz to...
4970634 Radar transparent materials  
A structure for reflecting visible light or near visible light, wherein the structure is formed of a low dielectric constant material having an external surface comprising an electrically...
4948922 Electromagnetic shielding and absorptive materials  
A material having a matrix and a plurality of inclusions which are chiral is effective as a coating to reduce incident reflections and absorptions of microwave frequency electromagnetic energy. The...
4942402 Radiation absorber and method of making it  
An absorber for radiation of frequency of the order of 1 THz is formed of a body of cured silicone-based elastomer containing an inert, powdered siliceous filler. Both the elastomer and the filler...
4901080 Radar test device with planar reflecting shield  
A test subject is mounted in front of a radar antenna for measurement of a radar cross-sectional signature of the test subject. The test subject is mounted on an electrically conductive rotator...
4862174 Electromagnetic wave absorber  
An electromagnetic wave absorber containing a mixture of a magnetic material and a carbon material, both in powder form, in a binding medium so as to suspend both kinds of powder particles in space...
4814546 Electromagnetic radiation suppression cover  
An electromagnetic radiation suppression covering conformable to a corresponding selected structure through reducing the extent of a surface dimension therein and containing one or more absorptive...
4809003 Almond test body  
An almond shaped radar cross-section test body for use in microwave anechoic chambers, which exhibits a large dynamic scattered field over large angular regions.
4791419 Microwave absorbing means  
This invention is a device for absorbing microwave-type radio signals from a radar sending unit. The above is accomplished by providing a transformer effect with a conductive material which is...
4748449 RF absorbing ablating apparatus  
A microwave absorbing ablating material is used as the ablative covering between the transmitting and receiving antennas while a standard ablating material, allowing the transmission of signals, is...
4728554 Fiber structure and method for obtaining tuned response to high frequency electromagnetic radiation  
The present invention relates to fiber structures and methods for obtaining tuned response to high frequency electromagnetic radiation, particularly at microwave frequencies. In one embodiment, a...
4725490 High magnetic permeability composites containing fibers with ferrite fill  
High magnetic permeability composites are obtained by incorporating ferrite fibers in the composites. The ferrite fibers consist of a polymer and particulate ferrite fill at a concentration above...
4713667 Target support apparatus  
Target support structure for making bistatic radar cross section measurements. The support structure includes two parallel columns of circular cross section that may be coated with radar absorbing...
4701761 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Means for suppressing reflection of electromagnetic radiation  
Composites are produced which are adapted to cover structures which are to be shielded from detection by electromagnetic radiation. The composites are in the form of a substrate, such as Mylar film...
4695694 Structure for minimizing microwave leakage  
Apparatus for using microwave energy to energize a light source which minimizes microwave leakage from a microwave cavity and yet permits a high percentage of light to be emitted from the cavity....
4572960 Use of metallized knitted net fabrics for protection against microwave radiation  
Metallized, particularly nickel-coated, knitted net fabrics are suitable for protecting the eyes against microwave radiation with very little adverse effect upon the field of vision, particularly...
4539433 Electromagnetic shield  
An electromagnetic shielding material for absorbing electromagnetic energy has been found. The shielding material is flexible and has a thin conductive core with a composite ferrite material...
4538151 Electro-magnetic wave absorbing material  
An electro-magnetic wave absorbing member comprises a mixture of short fibers of metal or alloy having a high electroconductivity, a length of from 0.1 mm to 50 mm and a length to diameter ratio of...
4522890 Multilayer high attenuation shielding structure  
A composite structure of thin films including alternating layers of relatively high conductivity metals and low conductivity metals to combine the effects of reflection and absorption and thereby...
4507660 Anechoic chamber  
An anechoic chamber utilizes an expanded central area resembling two flared horns with their rims fastened together, with the general vertex area of one of the horns forming the source area of the...
4480256 Microwave absorber  
An improved microwave absorber for coupling and absorbing radio frequency energy used for communication, navigation and radar systems. The structure has a conformal energy receiving surface for...
4439768 Metallized sheet form textile microwave screening material, and the method of use  
Metallized sheet-form textiles of synthetic polymers or natural fibres to which a metal layer has been applied by wet-chemical currentless deposition are particularly suitable for screening...
4387467 Satellite test chamber with electromagnetic reflection and resonance damping for simulating system generated electromagnetic pulses  
The simulation of systems generated electromagnetic pulses in a space environment for satellite testing is accomplished by means of a spherical test chamber that is coupled with a pulsed x-ray...
4386354 Electromagnetic noise suppression  
A method of reducing electromagnetic re-radiation of harmonic and intermodulation products by metal structures, having at least two adjoining elements, in response to an incident electromagnetic...
Matches 151 - 200 out of 253 < 1 2 3 4 5 6 >