Patents for H01Q 25 - Aerials or aerial systems providing at least two radiating patterns (4,128) |
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08/03/1993 | US5233359 Low difference pattern sidelobe pattern circuit |
07/28/1993 | EP0289553B1 Monopulse antenna with improved sidelobe suppression |
07/21/1993 | EP0290508B1 Orthogonal mode electromagnetic wave launcher |
07/06/1993 | US5225839 All weather tactical strike system (AWTSS) and method of operation |
06/29/1993 | US5223850 Low-profile full aperture monopulse antenna assembly |
06/29/1993 | US5223846 Multiple-beam transmission system |
06/23/1993 | EP0547800A1 Monopulse tracking apparatus |
06/22/1993 | US5221909 Active load biasing circuit |
06/10/1993 | WO1993011582A1 Compact broadband microstrip antenna |
06/09/1993 | EP0545873A2 A waveguide antenna which includes a slotted hollow waveguide |
06/03/1993 | DE4139102A1 Reflective antenna system with correction of comatic lobe - has secondary excitation stage providing phases shift to suppress comatic lobe |
06/02/1993 | EP0544081A1 Monopulse antenna with improved sidelobe suppression |
06/01/1993 | US5216428 Modular constrained feed for low sidelobe array |
05/26/1993 | EP0313636B1 Technique for roll stabilization and partitioning of phased array antenna receiving apertures |
05/19/1993 | EP0542440A1 Processing method for antenna patterns |
05/13/1993 | WO1993009614A1 Beam compensation methods for satellite communication system |
05/13/1993 | WO1993009613A1 Satellite communication system |
05/13/1993 | WO1993009578A1 Spacecraft antennas and beam steering methods for satellite communication system |
05/13/1993 | CA2121587A1 Satellite communication system |
05/13/1993 | CA2121350A1 Spacecraft antennas and beam steering methods for satellite communication system |
05/13/1993 | CA2121349A1 Beam compensation methods for satellite communication system |
05/11/1993 | US5210541 Microstrip patch antenna arrays |
05/05/1993 | EP0540249A1 Processing method for antenna patterns |
04/27/1993 | US5206658 Multiple beam antenna system |
04/13/1993 | US5202700 Array fed reflector antenna for transmitting & receiving multiple beams |
04/06/1993 | US5200755 Bistatic radar system |
03/02/1993 | US5191349 Apparatus and method for an amplitude monopulse directional antenna |
02/23/1993 | US5189434 Multi-mode antenna system having plural radiators coupled via hybrid circuit modules |
02/04/1993 | WO1993002486A1 Multibeam lens antenna |
01/20/1993 | EP0524001A1 Multi-port microwave coupler |
01/20/1993 | EP0524000A1 Multi-port microwave coupler |
01/19/1993 | CA2073793A1 Multi-port microwave coupler |
01/13/1993 | EP0278982B1 Filter interconnection matrix |
12/16/1992 | EP0518663A2 Primary horn for parabolic-reflector antenna |
12/09/1992 | EP0517352A1 A power distribution network for array antennas |
12/06/1992 | CA2064345A1 Power distribution network for array antennas |
12/02/1992 | EP0516039A1 Communication system by means of satellites in low orbit to mobile stations |
11/19/1992 | EP0513856A2 Use of a transmit signal amplifying apparatus, transmit subsystem and method for amplifying transmit signals |
11/17/1992 | US5164738 Wideband dual-polarized multi-mode antenna |
11/03/1992 | CA1309769C Dual polarization electromagnetic power reception and conversion system |
10/27/1992 | CA1309491C Microwave plate antenna in particular for doppler radar |
10/20/1992 | CA1309172C Dual mode phased array antenna system |
10/14/1992 | CN1018686B Antenna which is electronically reconfigurable in transmission |
09/29/1992 | US5151706 Apparatus for electronically controlling the radiation pattern of an antenna having one or more beams of variable width and/or direction |
09/23/1992 | EP0504552A1 Multi-mode beam forming networks for multi beam reflector antenna |
09/22/1992 | CA1307842C Dual polarization microstrip array antenna |
09/09/1992 | EP0277173B1 Satellite communications system having frequency addressable high gain downlink beams |
09/08/1992 | US5146234 Dual polarized spiral antenna |
09/02/1992 | EP0312588B1 Multifunction active array |
09/02/1992 | CN2114899U Dual-direction tv antenna |
09/02/1992 | CN1064177A 天线系统 Antenna System |
08/26/1992 | EP0277205B1 Satellite communications system employing frequency reuse |
08/26/1992 | EP0277188B1 Satellite communications system having multiple downlink beams powered by pooled transmitters |
08/12/1992 | CN1017847B Quincuncial omnidirectional receiving antenna for tv |
08/11/1992 | US5138324 Device to measure the elevation angle for a radar equipped with a double curvature reflective type antenna |
08/06/1992 | WO1992013373A1 Antenna system |
08/05/1992 | EP0497652A1 Device for the electronic control of the radiation pattern of a single or multi beam antenna with variable direction and/or width |
08/05/1992 | CN2112210U All frequency channel omnidirectional tv antenna |
08/04/1992 | US5136294 Multibeam antenna |
08/04/1992 | US5136271 Microwave integrated circuit mountings |
07/28/1992 | US5134417 Plural frequency matrix multiplexer |
07/21/1992 | US5132694 Multiple-beam array antenna |
07/14/1992 | US5130715 Method of managing beams formed by phased array antennas and apparatus therefor |
07/07/1992 | US5128687 Shared aperture antenna for independently steered, multiple simultaneous beams |
07/07/1992 | US5128682 Directional transmit/receive system for electromagnetic radiation with reduced switching |
07/07/1992 | CA1304816C Multimode omni antenna with flush mount |
06/10/1992 | EP0277984B1 Beam-forming network |
06/03/1992 | EP0488101A1 Reconfigurable multibeam antenna |
05/30/1992 | CA2056774A1 Reconfigurable transmission antenna |
05/19/1992 | US5115248 Multibeam antenna feed device |
05/19/1992 | CA1301311C Plural level beam-forming network |
05/12/1992 | US5113197 Conformal aperture feed array for a multiple beam antenna |
05/06/1992 | EP0484241A1 Printed circuit antenna for a dual polarized antenna array |
05/06/1992 | EP0483686A1 Multiple beam antenna system |
04/29/1992 | EP0482756A2 Wideband dual polarized multi-mode antenna |
04/28/1992 | US5109232 Dual frequency antenna feed with apertured channel |
04/08/1992 | EP0479696A1 Microwave plate antenna, especially for Doppler radar |
04/07/1992 | CA1298651C Electronic scanning antenna |
04/07/1992 | CA1298650C Transmit mode electronic reconfiguration antenna |
04/01/1992 | EP0300024B1 Slot antenna in circular waveguide |
03/24/1992 | US5099253 Constant beamwidth scanning array |
03/24/1992 | CA1297971C Multifunction active array |
03/04/1992 | CN2098093U Two-direction folding fan all-frequency channel antenna for tv |
03/03/1992 | US5093668 Multiple-beam array antenna |
03/03/1992 | US5093666 Lobing system |
02/25/1992 | CA1296422C Multibeam antenna |
02/11/1992 | CA1295731C Steerable beam antenna system using butler matrix |
01/29/1992 | EP0468662A2 Plural frequency matrix multiplexer |
01/22/1992 | EP0467738A1 Azimuth angle measuring device for a radar provided with a double curvature reflective-type antenna |
01/21/1992 | CA2047032A1 Elevation angle measuring device for a radar equipped with a double curvature type reflector antenna |
01/15/1992 | EP0466579A1 Double reflector with grids |
01/15/1992 | EP0466126A2 Method and apparatus for producing multiple, frequency-addressable scanning beams |
01/14/1992 | US5081464 Method and apparatus for producing multiple, frequency-addressable scanning beams |
01/07/1992 | CA1294004C Angle diversity signal separator using mode conversion |
11/21/1991 | EP0457500A2 Dual linear and dual circular polarization antenna |
11/21/1991 | EP0456680A1 Antenna arrays. |
11/19/1991 | US5066959 Mode coupler for monopulse applications having h01 mode extracting means |
11/05/1991 | US5063389 Antenna system with adjustable beam width and beam orientation |
10/31/1991 | DE4013165A1 Array antenna using microstrip line techniques - has individual radiator elements on either side of symmetrical supply network |
10/29/1991 | US5061943 Planar array antenna, comprising coplanar waveguide printed feed lines cooperating with apertures in a ground plane |