| Patents for H01Q 15 - Devices for reflection, refraction, diffraction, or polarisation of waves radiated from an aerial, e.g. quasi-optical devices (7,888) |
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| 06/09/1992 | US5121122 Facade construction for high structures |
| 06/03/1992 | EP0485467A4 Improved feeds for dual frequency feed assembly |
| 05/29/1992 | WO1992009118A1 A polarisation discriminator for electromagnetic waves with circular polarisation and dichroic surfaces including pluralities of such discriminators |
| 05/20/1992 | EP0485467A1 Improved feeds for dual frequency feed assembly |
| 05/14/1992 | WO1992008254A1 Method for the fabrication of lenses with a variable refraction index |
| 05/06/1992 | EP0483663A1 Band-pass filter for electromagnetic radiation |
| 05/06/1992 | CN1060927A Shaping method of surfacial aerial reflecting curved surface |
| 05/05/1992 | US5110651 Dielectric or magnetic anisotropy layers, laminated composite material incorporating said layers and their production process |
| 04/22/1992 | EP0480917A1 A solid dielectric lens aerial |
| 04/21/1992 | US5107274 Collocated non-interfering dual frequency microwave feed assembly |
| 04/07/1992 | US5103241 High Q bandpass structure for the selective transmission and reflection of high frequency radio signals |
| 04/07/1992 | US5103237 Dual band signal receiver |
| 04/01/1992 | EP0477336A1 Reflector. |
| 03/25/1992 | EP0476228A1 Reflector and method of and apparatus for fabricating the same |
| 03/25/1992 | CN1016029B Plate-type broad-band microwave antenna with reflecting surface |
| 03/24/1992 | US5099242 Novel shielding, reflection and scattering control using chiral materials |
| 03/24/1992 | CA1297970C Passive radar target |
| 03/17/1992 | US5097265 Triangular target boat reflector |
| 03/04/1992 | EP0472636A1 Antenna apparatus with reflector or lens consisting of a frequency scanned grating |
| 03/03/1992 | US5093054 Sandwich injection molding of skin and core layers of synthetic resin |
| 03/03/1992 | US5092244 Radar- and infrared-detectable structural simulation decoy |
| 02/26/1992 | CN2097448U Reflecting surface for microwave antenna |
| 02/20/1992 | WO1992002972A1 Radar reflector |
| 02/12/1992 | EP0470156A1 Radar reflecting target for reducing radar cross-section |
| 02/11/1992 | US5087515 Chaff fiber comprising insulative coating thereon, and having an evanescent radar reflectance characteristic, and method of making the same |
| 02/11/1992 | CA1295452C Module for expandable truss structure and expandable truss structure employingsaid module |
| 02/04/1992 | US5086301 Polarization converter application for accessing linearly polarized satellites with single- or dual-circularly polarized earth station antennas |
| 02/04/1992 | CA1295417C Phase control reflector element |
| 01/29/1992 | EP0468623A1 A layered frequency selective surface assembly and method of modulating the power or frequency characteristics thereof |
| 01/29/1992 | EP0468620A2 Dual band frequency reuse antenna |
| 01/28/1992 | US5084711 Microwave and millimetric wave receivers |
| 01/28/1992 | US5084707 Antenna system with adjustable beam width and beam orientation |
| 01/21/1992 | US5083130 Pulse radar and components therefor |
| 01/21/1992 | US5083128 Low observability aperture design for expendable countermeasures devices |
| 01/15/1992 | EP0466579A1 Double reflector with grids |
| 01/11/1992 | WO1992001319A1 A phase correcting reflection zone plate for focusing microwaves |
| 01/11/1992 | CA2087012A1 Phase correcting reflection zone plate for focusing microwaves |
| 01/08/1992 | EP0464647A2 Multibeam optical and electromagnetic hemispherical/spherical sensor |
| 12/28/1991 | CA2044401A1 Multibeam optical and electromagnetic hemispherical/spherical sensor |
| 12/24/1991 | US5075681 Radar cross-section model support and positioning apparatus |
| 12/24/1991 | US5074214 Particle size density |
| 12/19/1991 | DE4018452A1 Electromagnetic wave reflector used as antenna - has coating based on graphite and contg. carbon fibre material |
| 12/18/1991 | EP0461125A1 A reflector for electromagnetic energy. |
| 12/17/1991 | US5073782 Contraband detection system |
| 12/11/1991 | EP0389619A4 Curved plastic body with circuit pattern and method of making |
| 12/11/1991 | EP0190279B1 Radio frequency polariser |
| 12/10/1991 | US5070914 Three-dimensional shaping |
| 12/03/1991 | CA1292800C Heated dish antennas |
| 11/27/1991 | EP0413690A4 Infrared signature control mechanism |
| 11/19/1991 | US5066958 Dual frequency coaxial feed assembly |
| 11/14/1991 | WO1991017587A1 Radar reflector |
| 11/13/1991 | EP0456034A2 Bicone antenna with hemispherical beam |
| 11/13/1991 | EP0455903A1 Deployable membrane shell reflector |
| 11/12/1991 | CA1292063C Radar reflector |
| 11/05/1991 | US5063389 Antenna system with adjustable beam width and beam orientation |
| 10/31/1991 | WO1991016735A1 Reflector |
| 10/29/1991 | US5061945 Portable satellite antenna system |
| 10/29/1991 | US5061929 Deployment of radar reflectors |
| 10/15/1991 | US5057843 Method for providing a polarization filter for processing synthetic aperture radar image data |
| 10/15/1991 | US5057842 Outer wall of a structure located near a radar station |
| 10/08/1991 | US5055854 Reflector for parabolic antennae |
| 10/08/1991 | CA1290450C Polarization selective surface for circular polarization |
| 10/02/1991 | DE4010242A1 Antenna assembly for combined radar-video system - has optically transparent segment with conductive grid for radar wave reflection |
| 10/01/1991 | US5053785 Polarization selective surface for circular polarization |
| 09/19/1991 | DE4007986C1 Aircraft structure with cavities - filled with material absorbing or reflecting radar vanes for camouflage or imaging |
| 09/18/1991 | EP0446408A1 Wall element minimizing radar reflections |
| 09/17/1991 | US5049883 Combined microwave and infrared chaff |
| 09/10/1991 | US5047788 Figure control system for a flexible antenna |
| 09/10/1991 | US5047776 Multibeam optical and electromagnetic hemispherical/spherical sensor |
| 09/03/1991 | USH966 Two-beam scanning antenna requiring no rotary joints |
| 08/29/1991 | DE4005676A1 Radar wave absorber for building - uses ceramic plates attached to building wall with directly attached reflective layer |
| 08/28/1991 | EP0443564A2 Absorber for electromagnetic waves |
| 08/28/1991 | EP0442925A1 Microwave signal receiving apparatus |
| 08/27/1991 | CA1287996C Passive radar augmented projectile (prap) |
| 08/21/1991 | EP0442562A1 Antenna system with adjustable beam width and beam orientation |
| 08/21/1991 | EP0277189B1 Frequency selective screen having sharp transition |
| 08/20/1991 | US5041840 Multiple frequency antenna feed |
| 08/20/1991 | US5041834 Artificial ionospheric mirror composed of a plasma layer which can be tilted |
| 08/20/1991 | US5040349 Collapsible truss structures |
| 08/13/1991 | US5039990 Galvanically dissipatable evanescent chaff fiber |
| 08/08/1991 | DE4003057A1 Vehicular radar detector integrated into rear-view mirror - is metallised in segments on rear surface for transmission of microwaves and reception of echoes |
| 08/07/1991 | CN2082464U Multistars tv receiving antenna of great field of view type |
| 07/30/1991 | US5036323 Active radar stealth device |
| 07/30/1991 | US5036211 Infrared signature control mechanism |
| 07/30/1991 | US5035942 Used In Electric Communication |
| 07/23/1991 | US5034750 Pulse radar and components therefor |
| 07/23/1991 | US5034274 Protective devices for warfare |
| 07/23/1991 | US5033833 Omni-directional optical antenna element |
| 07/23/1991 | US5033385 Method and hardware for controlled aerodynamic dispersion of organic filamentary materials |
| 07/17/1991 | EP0437190A2 Polarization converter application for accessing linearly polarized satellites with single- or dual-circularly polarized earth station antennas |
| 07/17/1991 | CN2081156U Improved structure buttfly apparatus for satellite antenna |
| 07/16/1991 | US5032847 Method for fabricating antenna reflector panels |
| 07/02/1991 | CA1285649C Antenna system for exoatmospheric missiles |
| 06/27/1991 | WO1991009434A1 A corner reflector for use in a radar balloon |
| 06/27/1991 | WO1991008897A1 Chaff fiber having an evanescent electromagnetic detection signature, and method of making and using the same |
| 06/26/1991 | EP0434374A2 Low noise dual polarization electro-magnetic power reception and conversion system |
| 06/15/1991 | CA2005715A1 Corner reflector for use in a radar balloon |
| 06/13/1991 | CA2005446A1 Radar reflector to enchance radar detection |
| 06/11/1991 | US5023619 Satellite communications system |
| 06/02/1991 | WO1991008598A1 An antenna |