Patents for H01Q 17 - Devices for absorbing waves radiated from an aerial; Combinations of such devices with active aerial elements or systems (2,636) |
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12/29/1987 | US4716417 Holographic aircraft antenna |
11/25/1987 | EP0246544A1 Device for the EMI testing of electronic equipments |
10/28/1987 | EP0243162A2 Multi-layered microwave absorber and method of manufacturing the same |
10/28/1987 | EP0243161A2 Microwave-absorptive composite |
10/14/1987 | EP0240809A2 Electromagnetic radiation absorbing plastic compositions containing ferro- and/or piezoelectric material |
10/13/1987 | US4700190 Missile decoy radar cross section enhancer |
10/08/1987 | DE3500383A1 Method for preventing high-frequency electromagnetic location by means of magnetisable "metal oxides", pure elements and rare earths and of oxides from metal alloys and mixtures of the abovementioned for anti-radar purposes for military targets of maritime and airborne or other type |
09/23/1987 | EP0238291A1 Electromagnetic wave absorbers |
09/09/1987 | EP0235884A1 Omnidirectional antenna |
08/27/1987 | DE3605430A1 Device for reducing radar reflection |
08/18/1987 | US4688040 For targets |
07/07/1987 | USH308 Fabric visual/infrared/radar decoys |
07/02/1987 | DE3344023A1 Method for preventing high-frequency electromagnetic location by means of special ferrite materials for anti-radar purposes for military targets of maritime, aeromobile or other types |
06/23/1987 | CA1223345A1 Horn-reflector microwave antennas with absorber lined conical feed |
06/09/1987 | US4672387 Antenna systems for omnidirectional pattern |
06/02/1987 | CA1222562A1 Low side lobe gregorian antenna |
05/13/1987 | EP0221181A1 Compact antenna range employing shaped reflectors |
03/19/1987 | DE3533211A1 Parabolic antenna for directional-radio systems |
03/03/1987 | US4647940 Parallel plate waveguide antenna |
02/10/1987 | CA1217627A Camouflage material for use as protection against radar observation |
01/20/1987 | US4638268 Water circulation within a hollow body |
12/03/1986 | EP0203709A1 Attenuation of microwave signals |
12/02/1986 | US4626863 Low side lobe Gregorian antenna |
11/25/1986 | US4624865 Electrically conductive microballoons and compositions incorporating same |
11/25/1986 | US4624798 Electrically conductive magnetic microballoons and compositions incorporating same |
11/25/1986 | CA1214546A1 Non-resonant monopole antenna |
11/18/1986 | CA1214246A1 Radar camouflage material |
11/06/1986 | WO1986006550A1 Compact antenna range employing shaped reflectors |
11/04/1986 | US4621012 Camouflage net having a semiconductive layer |
09/24/1986 | EP0195244A1 Aircraft skin antenna |
09/16/1986 | US4612543 Integrated high-gain active radar augmentor |
08/19/1986 | US4606966 Camouflage controlling reflection of both long and short radar waves |
08/19/1986 | US4606848 Absorption, scattering; microwaves |
08/05/1986 | US4604629 Axial conductance angular filter |
04/29/1986 | CA1203873A1 Electromagnetic wave absorbers |
04/23/1986 | EP0178319A1 Horn reflector antenna with absorber lined conical feed |
04/15/1986 | EP0161245A4 Low density, electromagnetic radiation absorption composition. |
04/08/1986 | US4581284 With radar absorbing filler in fiber plies in varying concentration |
03/19/1986 | EP0174579A2 Shaped beam antenna |
12/31/1985 | US4562440 Antenna coupler with ribbon gasket |
12/10/1985 | US4557965 Layer of electroconductive fibrus, layer of mosaic patterned metal |
12/04/1985 | EP0162979A1 Electrically conductive microballoons and compositions incorporating same |
11/21/1985 | EP0161245A1 Low density, electromagnetic radiation absorption composition. |
10/10/1985 | WO1985004527A1 Horn reflector antenna with absorber lined conical feed |
07/09/1985 | US4528229 Camouflage material for use as protection against radar observation |
06/11/1985 | US4522890 Alternating layers of high and conductivity metals or alloys |
05/23/1985 | WO1985002265A1 Low density, electromagnetic radiation absorption composition |
05/08/1985 | EP0140598A1 Horn-reflector microwave antennas with absorber lined conical feed |
04/23/1985 | US4513290 Non-resonant coaxial monopole antenna |
04/16/1985 | CA1185696A1 Reflector-type microwave antennas with absorber lined conical feed |
04/10/1985 | EP0136818A1 Dual mode feed horn or horn antenna for two or more frequency bands |
04/10/1985 | EP0136817A1 Low side lobe gregorian antenna |
03/26/1985 | US4507354 Electromagnetic wave absorbers of silicon carbide fibers |
03/19/1985 | US4506267 Frequency independent shielded loop antenna |
01/29/1985 | US4496950 Enhanced wide angle performance microwave absorber |
11/14/1984 | EP0124917A1 A camouflage material for use as protection against radar observation |
10/30/1984 | US4480256 Microwave absorber |
10/17/1984 | EP0122243A2 A method for manufacturing a radar camouflage material |
10/17/1984 | EP0121655A2 Fibre composite |
09/11/1984 | US4471015 Polymer matrix with pigments or carbon black particles encapsulated by metal |
08/08/1984 | EP0115270A2 Frequency independent antenna |
07/10/1984 | US4459596 Coaxial antenna configuration with high inter-element isolation |
03/27/1984 | US4439768 Radiation protection devices in medical and communications fields |
03/06/1984 | US4435465 Composite material for shielding against electromagnetic radiation |
11/08/1983 | US4414339 Low density, electromagnetic radiation absorption composition |
10/18/1983 | US4410892 Reflector-type microwave antennas with absorber lined conical feed |
06/07/1983 | US4387122 Method for the manufacture of material absorbing ultra-high frequency waves |
04/26/1983 | US4381510 Microwave absorber |
01/11/1983 | US4368473 Microwave lens ripple filter |
01/05/1983 | EP0068092A2 Micro-wave absorbers with very small reflexion and their use |
12/09/1982 | WO1982004357A1 Reflector-type microwave antennas with absorber lined conical feed |
12/08/1982 | EP0066455A1 Reflector-type microwave antennas with absorber lined conical feed |
11/16/1982 | US4359737 Artificial trees for absorbing and scattering radiation |
10/05/1982 | US4353069 Absorptive coating for the reduction of the reflective cross section of metallic surfaces and control capabilities therefor |
09/14/1982 | US4349827 Parabolic antenna with horn feed array |
08/31/1982 | US4347487 High frequency attenuation cable |
08/03/1982 | US4343002 Paraboloidal reflector spatial filter |
06/23/1982 | EP0054098A1 Metal backed floor which simulates the properties of an infinitely thick earth |
06/02/1982 | EP0053036A1 Electrical system |
04/27/1982 | US4327364 Apparatus for converting incident microwave energy to thermal energy |
03/02/1982 | CA1119292A1 Parabolic reflector antenna with optimal radiative characteristics |
01/06/1982 | EP0043040A1 Compound material for screening against electro-magnetic radiation |
09/01/1981 | CA1108276A1 Metal oxide dielectric material |
08/04/1981 | US4282530 Cylindrical paraboloid weather cover for a horn reflector antenna with wave absorbing means |
05/20/1981 | EP0028967A1 Process for producing materials absorbing hyperfrequency waves and absorbing material so obtained |
05/06/1981 | EP0028018A1 An improved phased array antenna system |
04/21/1981 | US4263599 Parabolic reflector antenna for telecommunication system |
03/31/1981 | US4259674 Phased array antenna arrangement with filtering to reduce grating lobes |
02/03/1981 | US4249183 Periscope arrangement with protection against parasitic radiation |
10/28/1980 | US4231043 Technique for reducing near-in sidelobes of an offset antenna |
09/16/1980 | CA1085955A1 Periscopic assembly with supporting tube and arrays of such assemblies |
07/29/1980 | CA1082446A1 Powder products |
06/24/1980 | US4209791 Antenna apparatus for bearing angle determination |
05/14/1980 | EP0010712A1 Use of metallized textile surfaces as protection from microwave radiation |
05/14/1980 | EP0010568A1 Method and apparatus for camouflaging a metallic object prevent radiometer locating by adapting its own radiation to the ambiant radiation |
01/22/1980 | US4185287 Mechanically scanned antenna system |
01/22/1980 | US4185286 Nondispersive array antenna |
01/15/1980 | CA1070004A1 Camouflage material |
11/28/1979 | EP0005487A1 Parabolic reflector antenna with optimal radiative characteristics |
10/30/1979 | US4173018 Anti-radar means and techniques |