Patents for H01Q 19 - Combinations of primary active aerial elements and units with secondary devices, e.g. with quasi-optical devices, for giving the aerial a desired directional characteristic (10,176) |
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12/28/1994 | EP0631342A1 Antenna mirror scanner with constant polarization characteristics |
12/20/1994 | US5374939 Radiation gathering and focusing apparatus |
12/08/1994 | WO1994028595A1 Antennas for use in portable communications devices |
12/07/1994 | EP0627783A1 Radiating multi-layer structure with variable directivity |
12/01/1994 | DE4311111A1 Antenna system having a main reflector and a subreflector |
11/30/1994 | EP0626736A1 Omnidirectional radio frequency antenna and its application in a radar transponder |
11/23/1994 | CN2183614Y Omnibearing revolving television antenna |
11/23/1994 | CN1026741C Ball-surface multi-satellite TV. receiving antenna |
11/15/1994 | US5365246 Transmitting and/or receiving arrangement for portable appliances |
11/15/1994 | US5365245 Hybrid orthogonal transverse electromagnetic fed reflector antenna |
11/15/1994 | US5365243 Planar waveguide for integrated transmitter and receiver circuits |
11/10/1994 | WO1994026001A1 Steerable antenna systems |
11/10/1994 | DE4313395A1 Planar antenna |
11/09/1994 | EP0623247A1 Dielectric material for antennas |
11/03/1994 | DE4414510A1 Source having radiation on the rear side for a reflector antenna |
11/01/1994 | US5360973 Millimeter wave beam deflector |
10/25/1994 | US5359336 Circularly polarized wave generator and circularly polarized wave receiving antenna |
10/19/1994 | CN1093812A Radar apparatus |
09/29/1994 | WO1994022180A1 Stacked biconical omnidirectional antenna |
09/28/1994 | EP0484454B1 Transmitting and receiving arrangement for portable appliances |
09/28/1994 | CN2178389Y Half ball paraboloid U.V compatible full frenquency channel steering antenna |
09/27/1994 | US5351061 Antenna with parabolic reflector |
09/21/1994 | EP0616385A1 High-gain, waveguide-fed antenna having controllable higher order mode phasing |
09/21/1994 | CN2178000Y Foldable satellite receiving antenna |
09/17/1994 | CA2119068A1 High-gain, waveguide-fed antenna having controllable higher order mode phasing |
09/07/1994 | CN2176606Y Suspension satellite antenna for communication |
09/06/1994 | US5345248 Staggered helical array antenna |
09/01/1994 | WO1994019842A1 Antenna system |
08/30/1994 | EP0647359A4 Asr system for microburst detection. |
08/23/1994 | US5341150 Low sidelobe reflector |
08/18/1994 | WO1994018720A1 Radar antenna |
08/18/1994 | WO1994018719A1 Directional antenna, in particular a dipole antenna |
08/10/1994 | CN2173995Y Three-dimensional V/U compatible combined element rotating antenna |
08/04/1994 | WO1994017566A1 Radar apparatus |
08/02/1994 | CA2011475C Low cross-polarization radiator of circularly polarized radiation |
07/27/1994 | CN2172916Y 平板卫星接收天线 Flat-panel satellite receiving antenna |
07/21/1994 | WO1994016472A1 Helical antenna system |
07/19/1994 | CA2027183C Electronic scanning transmitting antenna |
07/13/1994 | CN1089397A Antenna system with helical feeders |
07/13/1994 | CN1025468C Square or rectangular plate like multi-focal point receiving antenna for satellite television |
06/29/1994 | EP0603690A1 A shaped dual reflector antenna system for generating a plurality of beam coverages |
06/29/1994 | CN2170585Y Short high-performance backfire antenna |
06/15/1994 | EP0601576A1 Antenna system for mobile communication |
06/15/1994 | CN2169214Y Small diameter satellite TV antenna |
06/14/1994 | US5321414 Dual polarization dipole array antenna |
06/14/1994 | US5321413 Offset active antenna having two reflectors |
06/01/1994 | DE4239785A1 Strip conductor group antenna - has flat conductive arrangement with stepped surface area variation which varies antenna band width |
05/31/1994 | US5317328 Horn reflector antenna with absorber lined conical feed |
05/31/1994 | CA2005364C Embedded surface wave antenna |
05/26/1994 | WO1994011921A1 Antenna |
05/18/1994 | EP0597318A2 Multibeam antenna for receiving satellite |
05/18/1994 | CN2165535Y Household self-stress spoke net paraboloid antenna |
05/17/1994 | US5313220 Low noise integrated MMDS antenna and down converter |
05/04/1994 | CN2164119Y Plane-type satellite receiving aerial |
05/04/1994 | CN2164118Y Single-offset paraboloid antenna made of high-mdecular composite material |
05/03/1994 | US5309167 Multifocal receiving antenna with a single aiming direction for several satellites |
04/28/1994 | DE4236021A1 Double reflector antenna for use with satellite - transmits and receives HF signals via satellite and directional earth propagation using main and sub-reflectors |
04/27/1994 | EP0593903A1 Identical surface shaped reflectors in semi-tandem arrangement |
04/20/1994 | EP0538346B1 A phase correcting reflection zone plate for focusing microwaves |
04/12/1994 | CA1328504C Microstrip antenna system with multiple frequency elements |
04/05/1994 | US5300941 Integrated MMDS antenna and down converter |
03/29/1994 | US5298911 Serrated-roll edge for microwave antennas |
03/23/1994 | EP0588322A1 Equalized offset fed shaped reflector antenna system and technique for equalizing same |
03/22/1994 | CA1328014C Antenna |
03/17/1994 | DE4302905C1 Directional antenna, pref. symmetrical dipole type - is formed by cutting and/or stamping out sections of reflector wall and bending remaining bridging piece |
03/16/1994 | EP0587247A1 Dielectric resonator antenna with wide bandwidth |
03/15/1994 | US5294939 Electronically reconfigurable antenna |
03/08/1994 | US5293175 Stacked dual dipole MMDS feed |
03/08/1994 | US5293172 Reconfiguration of passive elements in an array antenna for controlling antenna performance |
03/08/1994 | CA2002108C Electronic scanning antenna |
03/02/1994 | EP0584153A1 Radiowave antenna system. |
03/02/1994 | CN2158137Y TV receiving antenna with double-shaft paraboloid |
02/02/1994 | CN2155080Y Detatchable domestic satellite tv receiving aerial |
02/01/1994 | US5283591 Fixed-reflector antenna for plural telecommunication beams |
02/01/1994 | CA2026066C Multibeam antenna feed device |
01/26/1994 | CN2154540Y Satellite television receiving antenna with automatic snow eliminate and frostbite |
01/20/1994 | WO1994001900A1 Phase correcting zone plate |
01/20/1994 | DE4222966A1 Two band rotory beam antenna for resonance and three times resonance frequency - acts as two times half wave dipole or four times five eighths wavelength radiator |
01/20/1994 | CA2139761A1 Phase correcting zone plate |
01/19/1994 | CN2153865Y Domestic hanging type receiving antenna for satellite television |
01/05/1994 | CN2152308Y Multiple beam satellite television receiving antenna |
12/23/1993 | WO1993026059A1 Millimeter wave beam deflector |
12/22/1993 | EP0575211A1 Radiating element of an antenna with wide bandwidth and antenna array comprising such elements |
12/22/1993 | CN2150630Y Satellite television receiving antenna |
12/16/1993 | DE4219582A1 Directive antenna with absorbent region around edge of reflector - has triangular slots or holes leading into absorbent cavity resonator formed by two paraboloids on common axis |
12/14/1993 | US5270726 Rectangular aperture reflector for radar cross section and antenna pattern compact ranges |
12/08/1993 | EP0573319A1 Microwave antenna for transmit-receive systems of vehicles |
12/08/1993 | EP0276282B1 Modular antenna array |
12/08/1993 | CN2149022Y Yagi aerial |
11/30/1993 | US5266963 Integrated antenna/mixer for the microwave and millimetric wavebands |
11/30/1993 | US5266962 Method of converting transverse electrical modes and a helically outlined aperture antenna for implementing the method |
11/23/1993 | US5264861 Circular polarization antenna |
11/23/1993 | US5264859 Electronically scanned antenna for collision avoidance radar |
11/18/1993 | EP0569390A1 Antenna system. |
11/18/1993 | EP0549718A4 Apparatus and methods for simulating electromagnetic environments |
11/10/1993 | EP0401252B1 Microstrip antenna |
11/10/1993 | EP0294413B1 Steerable beam antenna system using butler matrix |
11/10/1993 | CN1078332A Parabolic antenna system capable of receiving multiple satellite signals |
11/09/1993 | US5260713 Microwave signal receiving apparatus |
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 |