Patents for H01Q 25 - Aerials or aerial systems providing at least two radiating patterns (4,128) |
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07/11/1995 | US5432519 Method of performing beam compression process on antenna pattern of radar |
06/29/1995 | DE4402922C1 Monopulse arrangement for generating antenna tracking signals |
06/13/1995 | US5424748 Radar antenna suitable for designation and trajectography radar |
06/06/1995 | US5422647 Mobile communication satellite payload |
06/06/1995 | CA2022854C Multiple beam deployable space antenna system |
05/31/1995 | CN2199604Y High-sensitive omnibearing active aerial |
05/31/1995 | CN2199603Y Omnibearing telescopic TV aerial |
05/19/1995 | CA2136048A1 Switched array for mobile satellite communication |
05/10/1995 | EP0614578A4 Compact broadband microstrip antenna. |
05/03/1995 | EP0651462A1 Beam sharpened pencil beam antenna systems |
05/03/1995 | EP0651461A1 Antenna with array of radiating elements |
05/03/1995 | CA2134055A1 Radiating element array antenna |
04/18/1995 | US5408237 Earth-fixed cell beam management for satellite communication system |
04/12/1995 | EP0647983A2 Base station antenna arrangement |
04/12/1995 | EP0647982A2 Base station antenna arrangement |
04/12/1995 | EP0647981A2 Base station antenna arrangement |
04/12/1995 | EP0647980A2 Base station antenna arrangement |
04/12/1995 | EP0647979A2 Base station antenna arrangement |
04/12/1995 | EP0647978A2 Base station antenna arrangement |
03/22/1995 | EP0644608A2 Double feeder for angular diversity for the illumination of a parabolic antenna reflector |
03/15/1995 | EP0643439A1 Method of performing the process of beam compression on antenna patterns of radar |
03/02/1995 | DE4328614A1 Method for measuring the speed of an object with respect to a reference plane, using the Doppler principle |
02/16/1995 | DE4326824A1 Waveguide circuit with two polarisation separating filters |
02/15/1995 | EP0639035A1 Base station antenna arrangement |
02/15/1995 | EP0638957A1 Slot-coupled fed dual circular polarization TEM mode slot array antenna |
02/15/1995 | EP0638956A1 Active antenna with electronic scanning in azimuth and elevation, particularly for microwave imaging by satellite |
02/01/1995 | CN2188808Y Omnidirectional antenna |
01/18/1995 | EP0634667A2 Small monopulse radar |
01/18/1995 | CN1027476C 天线系统 Antenna System |
01/17/1995 | CA2030640C Periodic array with a nearly ideal element pattern |
01/10/1995 | CA2036108C Microwave coupling arrangement |
12/06/1994 | US5371506 Simultaneous multibeam approach for cancelling multiple mainlobe jammers while preserving monopulse angle estimation accuracy on mainlobe targets |
11/30/1994 | EP0456680B1 Antenna arrays |
11/22/1994 | US5367307 Microwave plate antenna printed on a substrate |
11/17/1994 | EP0624919A1 Multi-beam antenna apparatus |
11/17/1994 | EP0624918A1 Full aperture interleaved space duplexed beamshaped microstrip antenna system |
11/17/1994 | EP0624804A1 Tracking system for estimating the pointing error of a HF antenna |
11/16/1994 | CN1095194A Active transmit phased array antenna |
11/15/1994 | CA2123266A1 Tracking system for estimating the pointing error of a microwave antenna |
11/09/1994 | EP0624008A2 Mobile communication satellite payload |
11/09/1994 | CN1094856A 360 deg. TV set aerial |
10/26/1994 | EP0621492A1 Method of performing beam compression of radar antenna patterns |
10/19/1994 | CN2180005Y All channel active TV receiving antenna |
10/12/1994 | EP0619622A2 Monopulse array system with airstripline multi-port network |
10/10/1994 | CA2120540A1 Monopulse array system with air-stripline multi-port network |
09/20/1994 | US5349360 Electronically controlled antenna system |
09/14/1994 | EP0614578A1 Compact broadband microstrip antenna |
08/31/1994 | EP0613019A1 Off-boresight antenna for monopulse radar |
08/24/1994 | EP0611501A1 Beam compensation methods for satellite communication system. |
08/24/1994 | EP0611500A1 Satellite communication system |
08/24/1994 | EP0611491A1 Spacecraft antennas and beam steering methods for satellite communication system |
08/02/1994 | CA2011475C Low cross-polarization radiator of circularly polarized radiation |
07/26/1994 | US5333002 Full aperture interleaved space duplexed beamshaped microstrip antenna system |
07/19/1994 | CA2027183C Electronic scanning transmitting antenna |
06/29/1994 | EP0603690A1 A shaped dual reflector antenna system for generating a plurality of beam coverages |
06/09/1994 | WO1994013031A1 Multi-beam antenna apparatus |
06/08/1994 | EP0600715A2 Active transmit phased array antenna |
06/08/1994 | CN2168344Y Omnibearing antenna for television set |
06/01/1994 | EP0598982A1 Space duplexed beamshaped microstrip antenna system |
05/18/1994 | EP0597318A2 Multibeam antenna for receiving satellite |
05/11/1994 | EP0596784A1 Search and track radar antenna |
05/03/1994 | US5309167 Multifocal receiving antenna with a single aiming direction for several satellites |
05/03/1994 | CA1329257C Dual-polarized printed circuit antenna having its elements, including gridded printed circuit elements, capacitively coupled to feedlines |
04/27/1994 | EP0593903A1 Identical surface shaped reflectors in semi-tandem arrangement |
04/27/1994 | EP0593822A1 Base station antenna arrangement |
04/19/1994 | US5304998 Dual-mode communication antenna |
04/19/1994 | CA2009423C Aperture synthesized radiometer using digital beamforming techniques |
04/12/1994 | US5302961 Antenna aperture with mainlobe jammer nulling capability |
04/12/1994 | US5302953 Secondary radar antenna operating in S mode |
04/12/1994 | CA1328504C Microstrip antenna system with multiple frequency elements |
02/22/1994 | US5289196 Space duplexed beamshaped microstrip antenna system |
02/22/1994 | US5289193 Reconfigurable transmission antenna |
02/08/1994 | CA2006291C Bifrequency radiating device |
02/03/1994 | WO1994002972A1 Spacecraft intersatellite link for satellite communication system |
02/01/1994 | US5283588 Monopulse tracking apparatus |
02/01/1994 | US5283587 Active transmit phased array antenna |
02/01/1994 | CA2026066C Multibeam antenna feed device |
01/18/1994 | US5280292 Multi-port microwave coupler utilized in a beam forming network |
01/18/1994 | CA1326307C Satellite communications system having frequency addressable high gain downlink beams |
01/05/1994 | EP0577520A1 Antenna for a secondary radar in S-mode |
01/04/1994 | CA2099703A1 Antenna for a secondary radar operating in s-mode |
12/29/1993 | EP0575788A1 XPD-optimised multimode angle diversity launcher |
12/28/1993 | US5274389 Broadband direction finding system |
12/28/1993 | US5274384 For a phased array radar |
12/07/1993 | US5268697 Processing method for antenna pattern |
11/18/1993 | EP0569390A1 Antenna system. |
11/10/1993 | EP0569016A1 Molded plastic microwave antenna |
11/10/1993 | EP0294413B1 Steerable beam antenna system using butler matrix |
11/04/1993 | DE4312693A1 Double reflector antenna with concave surfaces on both main and auxiliary reflectors - reflects two beam bundles onto beam outlet aperture with dimensions equal to area of bundle overlap |
11/02/1993 | US5258767 Antenna system for shaped beam |
10/19/1993 | US5255004 Linear array dual polarization for roll compensation |
10/19/1993 | CA1323419C Planar array antenna, comprising coplanar waveguide printed feed lines cooperating with apertures in a ground plane |
09/29/1993 | EP0562355A2 Antenna for radar surveillance |
09/29/1993 | EP0314713B1 Three dimensional feed through lens with hemispherical coverage |
09/28/1993 | US5248984 Method for processing an antenna pattern |
09/23/1993 | DE4307009A1 Multi-beam antenna device for radar system of e.g. automobile - has offset antenna supported by common holder with radar modules each having integral prim. radiator |
08/25/1993 | EP0277206B1 Antenna system for hybrid communications satellite |
08/18/1993 | EP0307445B1 Plural level beam-forming network |
08/17/1993 | US5237334 Focal plane antenna array for millimeter waves |
08/10/1993 | CA1321263C Antenna system with adjustable beam width and beam orientation |