Patents for H01Q 21 - Aerial arrays or systems (25,127) |
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03/16/1999 | CA2176877C Common aperture isolated dual frequency band antenna |
03/11/1999 | WO1999012229A1 Electronically scanned ferrite line source |
03/11/1999 | DE19739153A1 Block or bit fault dependent switch over between two aerials for reception of data from LW RDS transmitter |
03/11/1999 | CA2246925A1 Mobile telecommunication apparatus |
03/10/1999 | CN1210423A Circuits and systems for generating and communicating advanced television signals |
03/09/1999 | US5880695 Antenna system for wireless comunication systems |
03/09/1999 | US5880694 Planar low profile, wideband, wide-scan phased array antenna using a stacked-disc radiator |
03/04/1999 | WO1999010999A2 Wireless video transfer from computer to tv |
03/04/1999 | DE19840242A1 Double polarized antenna system for base station of wireless telecommunication system |
03/04/1999 | DE19738254A1 Transceiver arrangement for phase array antenna |
03/04/1999 | CA2301578A1 Wireless video transfer from computer to tv |
03/03/1999 | EP0899815A2 Transmit/receive-module with temperature compensation for phased array antennae |
03/03/1999 | EP0899811A2 All-around vehicle antenna-apparatus |
03/03/1999 | EP0899583A2 Antenna cluster for a motor road vehicle collision warning system |
03/03/1999 | EP0898849A1 Method and apparatus for directional radio communication |
03/03/1999 | CN1209919A Method and apparatus for cellular radiotelephone base stations using selected multiple diversity reception |
03/02/1999 | US5878327 Antenna apparatus and information transmitting system |
03/02/1999 | US5877731 Phased array antenna having an integrated ground plane and method for providing the same |
03/02/1999 | US5877729 Wide-beam high gain base station communications antenna |
03/02/1999 | US5877728 Multiple loop antenna |
03/02/1999 | US5877726 Antenna device |
02/25/1999 | WO1999009610A1 Antenna unit and signal switching circuit |
02/25/1999 | WO1999009607A2 Device for compensation of diffraction divergence |
02/25/1999 | DE19800937A1 Synthesis antenna for wireless handset |
02/25/1999 | CA2301541A1 Method and apparatus for compensation of diffraction divergence of beam of an antenna system |
02/24/1999 | EP0898324A1 Antenna system |
02/24/1999 | EP0557297B1 Method and apparatus for modulating and detecting a subcarrier signal for an inductively coupled transponder |
02/23/1999 | US5875396 Multichannel radio frequency transmission system to deliver wideband digital data into independent sectorized service areas |
02/23/1999 | US5874927 Tilted element antenna having increased effective aperture and method therefor |
02/23/1999 | US5874924 Spacecraft antenna array with directivity enhancing rings |
02/23/1999 | US5874922 Antenna |
02/23/1999 | US5874915 Wideband cylindrical UHF array |
02/23/1999 | US5874914 GPS receiver utilizing a communication link |
02/18/1999 | WO1999008338A1 Microwave antenna having wide angle scanning capability |
02/17/1999 | EP0896750A1 Antenna system |
02/17/1999 | EP0896748A1 Dual band antenna |
02/17/1999 | CN1208505A Dual polarized array antenna with central polarization control |
02/16/1999 | US5872548 Space/angle diversity configurations for cellular antennas |
02/16/1999 | US5872547 Conical omni-directional coverage multibeam antenna with parasitic elements |
02/16/1999 | US5872545 Planar microwave receive and/or transmit array antenna and application thereof to reception from geostationary television satellites |
02/16/1999 | US5872544 Cellular antennas with improved front-to-back performance |
02/11/1999 | WO1999007033A1 Dual polarized slotted array antenna |
02/10/1999 | EP0896385A1 Composite antenna |
02/09/1999 | US5870681 Self-steering antenna array |
02/09/1999 | US5870279 Used in an electronic device |
02/09/1999 | US5870066 Chip antenna having multiple resonance frequencies |
02/09/1999 | US5870064 Signal transmission antenna mast |
02/09/1999 | US5870061 Coaxial slot feed system |
02/04/1999 | WO1999005832A1 Methods and apparatus for canceling adjacent channel signals in digital communications systems |
02/04/1999 | WO1999005755A1 Antenna network for base station radiocommunication with mobile telephones |
02/04/1999 | WO1999005754A1 Antenna device with improved channel isolation |
02/04/1999 | CA2297700A1 Methods and apparatus for canceling adjacent channel signals in digital communications systems |
02/03/1999 | EP0895303A1 Directional antenna system with crossed polarisation |
02/03/1999 | EP0895302A2 An antenna assembly |
02/03/1999 | EP0895300A2 Antenna coupler for testing of mobile telephones |
02/03/1999 | EP0895299A1 Portable radio device |
02/03/1999 | EP0894414A1 Method and system for selecting an antenna beam of a base station of a radio system |
02/03/1999 | EP0894370A1 Dividable transmit antenna array for a cellular base station and associated method |
02/03/1999 | CN2306579Y Three star superposed TV aerial |
02/03/1999 | CN1207004A Radio telephone with differential driving various antenna structure and driving method |
02/02/1999 | US5867131 Antenna for a mobile computer |
02/02/1999 | US5867123 Phased array radio frequency (RF) built-in-test equipment (BITE) apparatus and method of operation therefor |
01/27/1999 | EP0893842A2 Laminated aperture antenna and multilayered wiring board comprising the same |
01/27/1999 | EP0857359A4 A linear diversity antenna |
01/27/1999 | CN1206508A Composite antenna |
01/27/1999 | CN1206230A Wide bandwidth antenna arrays |
01/26/1999 | US5864318 Composite antenna for cellular and gps communications |
01/21/1999 | WO1999003170A1 A device for antenna systems |
01/21/1999 | DE19829714A1 Antenna for polarised radio frequency signals |
01/20/1999 | EP0892458A2 Tv antenna apparatus for vehicles |
01/20/1999 | EP0891658A1 Method and apparatus for polarization diversity in a base station using a plurality of reception antennas |
01/20/1999 | EP0891643A1 Dual polarization antenna array with very low cross polarization and low side lobes |
01/20/1999 | EP0891642A1 Antenna assembly for radiotelephonic device |
01/20/1999 | CN1205804A Antenna assembly |
01/19/1999 | US5861859 Antenna assembly and portable radio apparatus |
01/19/1999 | US5861858 Antenna feed and support system |
01/19/1999 | US5861848 Circularly polarized wave patch antenna with wide shortcircuit portion |
01/19/1999 | US5861844 Method and apparatus for providing redundant coverage within a cellular communication system |
01/19/1999 | US5861840 Telecommunications antenna |
01/19/1999 | US5861839 Antenna apparatus for creating a 2D image |
01/14/1999 | WO1999001909A1 Broadband fan cone direction finding antenna and array |
01/14/1999 | WO1999001781A1 Radar plant and measurement technique for determination of the orientation and the depth of buried objects |
01/14/1999 | WO1998037590A3 Polarization diverse antenna for portable communication devices |
01/13/1999 | EP0891005A1 Array antenna with anti-jamming |
01/13/1999 | EP0891004A1 Omnidirectional slot antenna |
01/13/1999 | EP0891003A1 Method and apparatus for improving pattern bandwidth of shaped beam reflectarrays |
01/13/1999 | EP0891002A1 Device for connecting an outer antenna |
01/13/1999 | EP0890226A1 Radio station with circularly polarised antennas |
01/13/1999 | CN1205118A Multiple frequency antenna |
01/13/1999 | CN1204874A Wide band printed phased array antenna for microwave and mm-wave applications |
01/12/1999 | US5859621 Antenna |
01/12/1999 | US5859618 Composite rooftop antenna for terrestrial and satellite reception |
01/12/1999 | US5859617 Extendable rod antenna and helical antenna with frequency adjusting conductor |
01/12/1999 | US5859616 Interleaved planar array antenna system providing angularly adjustable linear polarization |
01/07/1999 | WO1999000916A1 Telecommunication system |
01/07/1999 | WO1999000871A1 Antenna feed architecture for use with a continuous transverse stub antenna array |
01/07/1999 | WO1999000869A1 Planar antenna radiating structure having quasi-scan, frequency-independent driving-point impedance |
01/07/1999 | WO1999000868A1 Telecommunication system antenna and method for transmitting and receiving using said antenna |
01/07/1999 | WO1999000867A1 Antenna system |
01/07/1999 | WO1999000866A1 Microstrip structure |