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