Patents
Patents for H01Q 17 - Devices for absorbing waves radiated from an aerial; Combinations of such devices with active aerial elements or systems (2,636)
07/1994
07/05/1994US5326414 Polymer support with conductor paths and polymer covers, fixing cover to support after coating with layer
06/1994
06/28/1994US5325094 Electromagnetic energy absorbing structure
06/28/1994US5324887 Patterned ink on interior surface of lid of microwave housing with carbon or iron-containing particles
06/23/1994WO1994013878A1 Radar attenuating textiles
06/23/1994CA2150472A1 Radar attenuating textiles
06/21/1994US5323160 Laminated electromagnetic wave absorber
06/08/1994EP0600387A1 Wideband wave absorber
05/1994
05/31/1994US5317328 Horn reflector antenna with absorber lined conical feed
05/17/1994US5312678 A structure for absorbing and/or reflecting radiation, e.g. electromagnetic, comprising a radar-absorber and a layer of nonflammable fluorinated or nonfluorinated carbon fibers
05/10/1994US5311199 Honeycomb cross-polarized load
05/10/1994US5310598 Radio wave absorbing material
05/03/1994US5309167 Multifocal receiving antenna with a single aiming direction for several satellites
04/1994
04/19/1994US5304750 Absorber for electromagnetic and acoustic waves
03/1994
03/31/1994DE4231962A1 Microwave-absorbing component for shielding applications
03/29/1994US5298903 Synthetic dielectric material for broadband-selective absorption and reflection
03/22/1994US5296859 Broadband wave absorption apparatus
02/1994
02/24/1994DE4317884A1 Neutralisation or screening device for electrical or electromagnetic radiation field - has container filled with mineral material, e.g rose quartz providing screening effect
02/23/1994EP0583557A1 Window glazing
02/09/1994EP0582292A1 Prefabricated absorber element
01/1994
01/20/1994DE4223177A1 Material used to absorb and shield electromagnetic waves - comprising finely divided, electrically nonconducting solid and a finely divided electrically conducting solid
01/11/1994US5278562 Method and apparatus using photoresistive materials as switchable EMI barriers and shielding
01/04/1994US5276448 Broad-band wave absorber
01/04/1994US5276447 Radar echo reduction device
01/04/1994US5275880 Electrically conductive radiation reflecting layer
12/1993
12/23/1993WO1993025270A1 Device for protection against the biological effects of electromagnetic non-ionising radiations, particularly those emitted by vdu equipment
12/22/1993EP0574427A1 Component for the absorption of electromagnetic waves, and the use of such a component
12/16/1993DE4219582A1 Directive antenna with absorbent region around edge of reflector - has triangular slots or holes leading into absorbent cavity resonator formed by two paraboloids on common axis
12/09/1993WO1993024307A1 Method for making a material with artificial dielectric constant
12/09/1993CA2136109A1 Method for making a material with artificial dielectric constant
11/1993
11/25/1993WO1993023893A1 Electromagnetic energy absorbing structure
11/25/1993WO1993023892A1 Structurally resonating absorption device for the reduction of radar reflections
11/25/1993WO1993023222A1 Ultraviolet protective fabric
11/25/1993DE4216837A1 Radar camouflage for roll-stabilised slow-flying missile - comprises strips and narrow wedges of absorbent material in conjunction with wire grid covering nose only
11/04/1993DE4209730A1 EM fields and radiation screening arrangement - contains electrically conducting material on flexible carrier
10/1993
10/28/1993DE3938299A1 Struktur zur Absorption von elektromagnetischen Wellen Structure for the absorption of electromagnetic waves,
10/13/1993EP0565464A1 Method for damping electromagnetic waves, especially in a Faraday cage
10/07/1993DE4211061A1 Thermoplastic material with improved heat stability and cracking resistance - comprises aromatic polycarbonate(s), polyamide(s), graft copolymer contg. rubber elastomer and substd. styrene, polymeric cpd. contg. acrylate(s) and filler
10/05/1993US5250950 Vehicle
09/1993
09/08/1993EP0558691A1 New category of magnetic materials, their production and use.
09/02/1993DE4205803A1 Electromagnetic compatible chamber - comprises inner walls coated with resistance material
08/1993
08/31/1993US5240768 Articles containing metal fibers
08/24/1993US5238975 Microwave radiation absorbing adhesive
08/05/1993WO1993015530A1 Absorber of electromagnetic waves
08/05/1993DE4215954A1 Electromagnetic wave absorber in closed and screened spaces - has pyramidal frame and filling constituted by plastic foam impregnated with carbon, metal oxide or mixt.
07/1993
07/28/1993EP0553063A1 A yarn for the production of knitted articles able to attenuate low and medium frequency electromagnetic fields
07/27/1993US5230763 Process for manufacturing a surface element to absorb electromagnetic waves
07/06/1993US5225844 Rotor modulation suppressor
07/06/1993US5225454 Radar camouflage material
07/06/1993US5225284 For electromagnetic energy; opaque reflector and two electroconductive members
07/01/1993DE4142480A1 Absorber element used to absorb electro-magnetic waves - comprises base made of electrically insulating material contg. finely divided dielectric and/or magnetic material
06/1993
06/29/1993US5223849 Broadband electromagnetic energy absorber
06/29/1993US5223327 Electrically conductive surface element for forming an electromagnetic wave absorber
06/24/1993DE4223138A1 Double reflector radar antenna with variable directional characteristic - has movable metal or metallised element within radiation field of main reflector or pivoted edge around main reflector
06/24/1993DE4141763A1 Magnetic materials comprising spin-coupled hard and soft magnetic phases
06/16/1993EP0546962A1 Method for manufacturing a knitted article from metal wires, new type of knitwear obtained this way and its application for manufacturing various composite structures
06/16/1993EP0546255A2 Electromagnetic wave absorber
06/16/1993EP0546182A1 Method for absorbing electromagnetic wave
05/1993
05/27/1993WO1993009944A1 Materials for electromagnetic radiation attenuation
05/27/1993DE4138771A1 Electroconductive film prodn. on plastics surface - esp. for electromagnetic screen by impregnation with monomer and oxidant to form conductive polymer
05/27/1993CA2123598A1 Materials for electromagnetic radiation attenuation
05/25/1993US5214432 Broadband electromagnetic energy absorber
05/04/1993US5208599 Serrated electromagnetic absorber
04/1993
04/29/1993WO1993008586A1 Microwave-absorbing component, and the use of such a component
04/28/1993EP0539297A1 Device with adjustable frequency selective surface
04/13/1993US5202701 Low radar cross section reflector antenna
04/13/1993US5202688 Bulk RF absorber apparatus and method
04/13/1993US5202535 Chiral absorber
04/08/1993DE4132603A1 Absorber for damping electromagnetic waves - contains resistive conductor forming closed loop on reflective surface, matching resistors in loop sections not horizontally aligned w.r.t. surface
04/01/1993WO1993005960A1 Weather-resistant electromagnetic interference shielding for electronic equipment enclosures
03/1993
03/17/1993EP0531979A1 Mobile object discriminating system
03/03/1993EP0530038A1 Serrated electromagnetic absorber
03/01/1993CA2076993A1 Serrated electromagnetic absorber
02/1993
02/23/1993US5189078 Microwave radiation absorbing adhesive
02/18/1993DE4127103A1 Horn-shaped closed TEM waveguide - has microwave absorber on rear wall, floor and side walls, enabling emission measurement as well as noise resistance measurement
02/18/1993DE4127045A1 Surface absorber for electromagnetic HF radiation - has induction loop grid deposited directly on resistance layer, facing impinging waves
02/09/1993US5185654 Electrostatic RF absorbant circuit carrier assembly and method for making the same
02/09/1993US5185381 Foam absorber
01/1993
01/21/1993DE4121584A1 Camouflaging and strong elimination of radar radiation in inlet of drive - includes impinging radar radiation in inlet duct using divergent tube and associated mode converter
01/12/1993US5179381 Electromagnetic wave absorber for VHF to UHF band
01/07/1993WO1993000786A1 Method for fabricating a screen absorbing electromagnetic radiation
12/1992
12/24/1992DE4120663A1 Magnetic materials comprising spin-coupled hard and soft magnetic phases
12/23/1992CN1019556B Complex microwave absorbing agent and prepn. method thereof
12/22/1992US5173699 For suppressing indirectly received radar signals
12/10/1992WO1992022193A1 Method for absorbing electromagnetic wave
11/1992
11/17/1992US5164242 Electromagnetic wave attenuating and deicing structure
10/1992
10/13/1992US5155316 Heat-conducting mat for absorbing microwave and electromagnetic wave energy
09/1992
09/29/1992US5151222 Foam absorber
09/17/1992WO1992016033A1 Component for the absorption of electromagnetic waves, and the use of such a component
09/17/1992WO1992015995A1 New category of magnetic materials, their production and use
09/15/1992US5147718 Iron carbonyl coating
09/10/1992DE4201871A1 Bauteil zur absorption elektromagnetischer wellen und seine verwendung Component to the absorption of electromagnetic waves and its use
09/10/1992DE4107499A1 New magnetic material based up coupled exchange of hard and soft materials - with alloy including rare earth materials and with remanence to saturation magnetisation of more than 0.6
08/1992
08/26/1992EP0499868A2 Glass sheeting element with low degree of radar reflection
08/11/1992US5137991 Polyaniline compositions, processes for their preparation and uses thereof
07/1992
07/29/1992EP0495967A1 Building components
07/28/1992US5134405 Electromagnetically anechoic chamber and shield structures therefor
07/23/1992DE4101074A1 Low radar reflection glazing element for building near airport radar installation - has thick front glass pane sepd. by wide space from back glass contg. electroconducting layer
07/22/1992EP0495459A1 Use of composite materials which contain metal particles in an isolating oxide matrix as dielectrics
07/07/1992US5128678 Aircraft construction
06/1992
06/30/1992US5125992 Bulk rf absorber apparatus and method of making same
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