Patents
Patents for H01Q 3 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an aerial or aerial system (21,949)
04/1998
04/01/1998EP0832508A1 Device for adjusting the beam direction of an antenna, and feed line structure therefor
03/1998
03/31/1998US5734356 Construction for portable disk antenna
03/31/1998US5734350 Microstrip wide band antenna
03/31/1998US5734345 Antenna system for controlling and redirecting communications beams
03/31/1998CA2133038C Plane array antenna for receiving satellite broadcasting
03/26/1998WO1998012571A1 Position determination using multiple base station signals
03/25/1998EP0831553A2 Antenna device
03/25/1998EP0831552A2 Array antenna, antenna device with the array antenna and antenna system employing the antenna device
03/25/1998EP0831551A2 Antenna device
03/25/1998EP0831548A2 Antenna
03/25/1998CN2277117Y Antenna steering remote-control device
03/24/1998US5731790 Compact optical controller for phased array systems
03/19/1998WO1998011626A1 Antenna system for enhancing the coverage area, range and reliability of wireless base stations
03/19/1998CA2265987A1 Antenna system for enhancing the coverage area, range and reliability of wireless base stations
03/18/1998EP0829922A2 Phase controlled antenna
03/18/1998EP0829920A2 Method for generation of sum- and difference antenna patterns with low sidelobes for planar antenna arrays
03/18/1998EP0829919A1 Satellite communication device mounted on mobile body
03/18/1998EP0829918A2 A multifunction structurally integrated VHF-UHF aircraft antenna system
03/18/1998EP0681747A4 Dish antenna structures and hydraulic control of the orientation thereof.
03/18/1998CN1176566A Directivity control antenna apparatus for shaping radiation pattern of antenna of base station in mobile communication system in accordance with estimated directions or positions of mobile stations
03/17/1998US5729240 Method of controlling a non-geostationary satellite antenna positioner
03/17/1998US5729239 Voltage controlled ferroelectric lens phased array
03/17/1998US5729236 Identification system reader with multiplexed antennas
03/12/1998WO1998010482A1 Microwave transceiver/antenna system with adjustable mounting and alignment mechanism
03/12/1998WO1998010309A1 Transmit/receive module for planar active apertures
03/12/1998WO1998010305A1 Microwave energy implemented aircraft landing system
03/12/1998DE19737136A1 Antennenvorrichtung mit steuerbarer Richtwirkung Antenna device with a controllable directional effect
03/12/1998DE19636151A1 Phase controlled antenna for radar device
03/12/1998DE19636084A1 Phase controlled antenna for radar device
03/11/1998EP0828143A2 Optical system employing terahertz radiation
03/11/1998EP0827638A1 Cellular communication system having device coupling distribution of antennas to plurality of transceivers
03/11/1998CN2276202Y Infrared telecontrol steering antenna
03/10/1998US5726662 Frequency compensated multi-beam antenna and method therefor
03/10/1998US5726661 Method and apparatus for initial pointing of an antenna
03/10/1998US5726655 Anisotropic microwave composite
03/05/1998WO1998009372A1 Method of and apparatus for filtering intermodulation products in a radiocommunication system
03/04/1998EP0826649A1 Methods of making ferroelectric ceramic-polymer composites for voltage-variable dielectric tuning and structures using same
03/04/1998EP0826250A1 An antenna device with two radiating elements having an adjustable phase difference between the radiating elements
03/03/1998US5724044 Electrically scanning microwave radiometer
02/1998
02/26/1998WO1998008321A1 Apparatus and method for providing a beacon signal in a wireless communication system
02/26/1998WO1998008319A1 Rake receiver for spread spectrum signal demodulation
02/25/1998EP0825674A1 Single-wire spiral antenna
02/25/1998EP0824765A1 Antenna device
02/24/1998USRE35736 Distributed antenna system
02/24/1998US5722089 Antenna control device for a radio communication apparatus having a plurality of antennas
02/24/1998US5721556 Fiberoptic manifold and time delay arrangement for a phased array antenna
02/24/1998US5721553 For holding an object in a measuring apparatus
02/24/1998US5721194 Tuneable microwave devices including fringe effect capacitor incorporating ferroelectric films
02/19/1998WO1997050186A3 System and method for adaptive interference cancelling
02/17/1998US5719975 Optically reconfigurable conductive line element
02/17/1998US5719586 Spherical antenna pattern(s) from antenna(s) arranged in a two-dimensional plane for use in RFID tags and labels
02/17/1998US5719583 Mobile communication system which performs antenna gain control
02/11/1998EP0823750A1 Synchronous rotation dual-axis mechanical hinge assembly
02/11/1998CN1173266A Method and apparatus for providing redundant radio coverage within a vellular communication system
02/11/1998CN1173265A Spectrally efficient high capacity wireless communication systems
02/10/1998US5717405 Four-port phase and amplitude equalizer for feed enhancement of wideband antenna arrays with low sum and difference sidelobes
02/10/1998US5717399 Radar device for vehicle use
02/05/1998WO1998005180A1 Circuitry and method for time division multiple access communication system
02/05/1998WO1998005089A1 A phase control device
02/05/1998DE19630716A1 Swivel apparatus especially for mobile radar antenna
02/04/1998CN1172566A Multiple access digital transmitter and receiver
02/04/1998CN1172356A Mobile radio antenna
02/03/1998US5714961 Planar antenna directional in azimuth and/or elevation
02/03/1998US5714960 Parabolic antenna
01/1998
01/29/1998WO1998004054A1 System and method for reducing cumulative noise in a distributed antenna network
01/29/1998WO1998004052A1 System and method for equalizing the delay time for transmission paths in a distributed antenna network
01/29/1998WO1998004017A1 Geosynchronous communications satellite system with reconfigurable service area
01/28/1998EP0682821A4 Portable antenna test apparatus.
01/28/1998CN1171664A Signal processing apparatus and method for reducing effects of interference and noise in wireless communications utilizing antenna array
01/27/1998US5712642 Spatial power combiner using subharmonic beam position control
01/22/1998WO1998002765A1 Wavelength-addressable optical time-delay network and phased array antenna incorporating the same
01/21/1998EP0820116A2 Mobile radio antenna
01/21/1998CN1170972A Spiral-shaped array for broadband imaging
01/21/1998CN1037135C Antenna capable of producing desirable radiation patterns without madifying antenua structure
01/20/1998US5710990 Transmitter which adjusts peak-to-average power of a multicarrier signal by switching between a group of channels and a phase-adjusted group of channels
01/20/1998US5710569 Antenna system having a choke reflector for minimizing sideward radiation
01/15/1998WO1998001964A1 Modular transmission system and method
01/15/1998WO1998001946A1 Controller-based radio frequency amplifier module and method
01/15/1998WO1998001922A1 Focused narrow beam communication system
01/15/1998WO1998001921A1 A planar dual-frequency array antenna
01/15/1998CA2259564A1 A planar dual-frequency array antenna
01/14/1998EP0818082A1 Process and receiver for the reconstruction of signals distorted by multi-directional diffusion
01/14/1998EP0818060A1 Apparatus and method for adaptive beamforming in an antenna array
01/14/1998EP0818059A1 Wide antenna lobe
01/14/1998EP0818058A1 Phased array antenna provided with a calibration network
01/14/1998CN2272615Y Multiple satellite antenna converting switch
01/14/1998CN1170282A Devices for transmitter weights and methods therefor
01/13/1998US5708971 Two-way paging system and apparatus
01/13/1998US5708679 Hitless ultra small aperture terminal satellite communication network
01/13/1998US5708442 Correlation radiometer imaging system
01/13/1998US5708441 Antenna directivity control method and channel configuration method for a mobile communication system
01/08/1998WO1998000930A1 A signal processing method utilizing an eigenvector corresponding to the maximum eigenvalue of an autocorrelation matrix of received signals for an antenna array system
01/07/1998EP0817309A1 Reconfigurable zonal beam forming system for an antenna on an orbiting satellite and optimisation procedure for the reconfiguration
01/07/1998EP0817308A2 Method for the automatic selection of one beam among those formed by a multibeam antenna, in particular for radiomobile systems
01/07/1998EP0817307A2 Microwave antenna feed structure
01/07/1998EP0815699A1 Fixed station of a mobile radio-telephone system with changeable aerial characteristic
01/07/1998EP0815692A2 A two-way paging system and apparatus
01/07/1998CN1169540A Circularly symmetric, zero redundancy, planar array having broad frequency range applications
01/07/1998CN1036962C Antenna system with helical feeders
12/1997
12/31/1997WO1997050186A2 System and method for adaptive interference cancelling