Patents
Patents for H01Q 21 - Aerial arrays or systems (25,127)
04/2000
04/19/2000EP0994524A1 Dual polarized base station antenna
04/19/2000EP0693246B1 Transceiver algorithms of antenna arrays
04/18/2000US6052582 Sectorized multi-function communication system
04/18/2000US6052095 Dual gridded reflector antenna
04/18/2000US6052094 Antenna system for millimeter wave length communication systems
04/18/2000US6052091 Multiple loop antenna of radio paging receiver
04/18/2000US6052086 Array antenna, antenna device with the array antenna and antenna system employing the antenna device
04/16/2000CA2265132A1 Crossed bent dipole antenna
04/15/2000CA2280351A1 Orthogonally polarized transmission antenna and method of transmission
04/13/2000WO2000021159A2 Transmit/receive module having multiple transmit/receive paths with shared circuitry
04/13/2000WO2000021156A1 Plasma antenna
04/13/2000WO2000021154A2 Bifocal planar antenna
04/13/2000WO2000020881A2 Antenna assembly including dual channel microwave transmit/receive modules
04/13/2000DE19847291A1 Data transmission system for railway vehicle
04/13/2000CA2344427A1 Transmit/receive module having multiple transmit/receive paths with shared circuitry
04/13/2000CA2344426A1 Antenna assembly including dual channel microwave transmit/receive modules
04/12/2000EP0993073A1 Panel of active antennas with multilayer structure
04/12/2000EP0993069A2 Surface mount circularly polarized wave antenna and communication apparatus using the same
04/12/2000EP0992813A2 Radio wave arrival direction estimating antenna apparatus
04/12/2000EP0992128A1 Telecommunication system
04/12/2000EP0992117A2 Antenna diversity system
04/12/2000EP0992079A1 Antenna system
04/12/2000CN1250549A Integrated transmit/receive antenna with arbitrary utilisation of the antenna aperture
04/12/2000CN1250548A Microstrip distribution array for group antenna and such group antenna
04/12/2000CN1250235A Method and apparatus for antenna array calibration
04/12/2000CN1250233A Planar circular polarized wave antenna and communication equipment using the same
04/12/2000CN1051408C Planar antenna
04/11/2000US6049311 Planar flat plate scanning antenna
04/11/2000US6049310 Variable directivity antenna and method of controlling variable directivity antenna
04/11/2000US6049308 Integrated resonant tunneling diode based antenna
04/11/2000US6049307 Adaptive phased array antenna using weight memory unit
04/11/2000US6049305 Compact antenna for low and medium earth orbit satellite communication systems
04/11/2000US6047783 Systems, arrangements and associated methods for tracking and/or guiding an underground boring tool
04/06/2000WO2000019564A1 A radio communication device and an antenna system
04/06/2000WO2000019563A1 Compact antenna for low and medium earth orbit satellite communication systems
04/06/2000WO2000019562A1 Antenna feeding circuit
04/06/2000WO2000019560A1 Method and arrangement for improving null depths
04/06/2000WO2000019559A1 Planar antenna and method for manufacturing the same
04/06/2000DE19845868A1 Doppelfokusplanarantenne Doppelfokusplanarantenne
04/06/2000DE19845649A1 Keyless access/driving authorization controller for motor vehicle has mutually orthogonal antenna coils driven differently so spatial vectorial field superimposition changes continuously
04/05/2000EP0991137A1 Method for expanding the radiation pattern of an antenna and antenna using this method
04/05/2000CN1249817A Antenna for transmission and reception of signals having linear polarisation
04/04/2000US6046992 Radio frequency local area network
04/04/2000US6046704 Stamp-and-bend double-tuned radiating elements and antennas
03/2000
03/30/2000WO2000017960A1 Antenna array structure stacked over printed wiring board with beamforming components
03/30/2000CA2344265A1 Antenna array structure stacked over printed wiring board with beamforming components
03/29/2000EP0989629A1 Vehicular antenna
03/29/2000EP0988663A1 Communications system
03/29/2000EP0988660A1 Antenna assembly and a mobile radio apparatus using the same
03/29/2000CN1249070A Electronics unit for radio transmission of signal
03/28/2000US6043791 Limited scan phased array antenna
03/28/2000US6043790 Integrated transmit/receive antenna with arbitrary utilization of the antenna aperture
03/28/2000US6043787 Beam modifying trough waveguide antenna
03/28/2000US6043786 Multi-band slot antenna structure and method
03/28/2000US6043785 Broadband fixed-radius slot antenna arrangement
03/28/2000US6043783 Windowpane antenna apparatus for use in vehicles
03/28/2000US6043779 Antenna apparatus with feed elements used to form multiple beams
03/28/2000US6041688 Wireless guided missile launch container
03/23/2000WO2000016439A2 Antenna which can be operated in several frequency bands
03/23/2000DE19941870A1 Source of millimetric electromagnetic radiation includes resonator coupled to antenna and resonance-shifting component for lossless switching of e.g. radar array with dielectric lens
03/23/2000DE19859120C1 Aerial assembly for satellite communication installations on ships and submarines uses small, level planar aerials as satellite aerials fitted on the rear side with a radar aerial.
03/22/2000CN1248349A Apparatus for receiving and transmitting radio signal
03/22/2000CN1248348A Base station antenna arrangement
03/22/2000CN1248078A Indoor distributed antenna
03/21/2000US6041232 Aggregation of shaped directional receiving antenna array for improved location information
03/21/2000US6040806 Circular-polarization antenna
03/21/2000US6040802 Antenna cross-polar suppression means
03/21/2000US6040799 Beam steering antenna unit
03/16/2000WO2000014826A1 Circularly polarized dielectric resonator antenna
03/15/2000EP0986128A1 Method for forming a spherical wave by superposition of a plurality of limited plane waves
03/15/2000EP0985282A2 Antenna-gain diversity
03/15/2000EP0985249A1 Antenna system
03/15/2000CN2369366Y Active outdoor complete channel TV antenna
03/15/2000CN1247641A Method for integrating antennas in distributed antenna system
03/14/2000USRE36615 Use of vanadium oxide in microbolometer sensors
03/14/2000US6038459 Base station antenna arrangement
03/14/2000US6037912 Low profile bi-directional antenna
03/14/2000US6037911 Wide bank printed phase array antenna for microwave and mm-wave applications
03/14/2000US6037910 Phased-array antenna
03/14/2000US6037909 Deployed payload for a communications spacecraft
03/14/2000US6037908 Microwave antenna
03/14/2000US6037906 BroadBand aerial means
03/14/2000US6037905 Azimuth steerable antenna
03/14/2000US6037903 Slot-coupled array antenna structures
03/14/2000US6036815 Phased array with integrated bandpass filter superstructure
03/14/2000US6035951 System for tracking and/or guiding an underground boring tool
03/09/2000WO2000013260A1 Antenna arrangement
03/09/2000DE19941473A1 Method of self-calibration of group antennas involves using calibration signal, deriving beam shaping network control parameters from measurement signal, defined antenna characteristic
03/09/2000DE19940067A1 Wireless digital communications system has sectors that send digital HF signals to remote data receiver stations, HF modules that modulate common digital signal with different frequencies
03/08/2000EP0916195A4 Method and system for improving communication
03/08/2000CN1246774A Device for receiving and transmitting carrier band signal for radio base station
03/07/2000US6034650 Small helical antenna with non-directional radiation pattern
03/07/2000US6034649 Dual polarized based station antenna
03/07/2000US6034648 Broad band antenna
03/07/2000US6034647 Boxhorn array architecture using folded junctions
03/07/2000US6034646 Information transmission device and method for systems using radiating waveguides
03/07/2000US6034641 Antenna device
03/07/2000US6034636 Planar antenna achieving a wide frequency range and a radio apparatus used therewith
03/07/2000US6034633 Transmit/receive module having multiple transmit/receive paths with shared circuitry
03/03/2000WO2000017813A1 Noncontact communication semiconductor device