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