Patents
Patents for H01Q 21 - Aerial arrays or systems (25,127)
09/1997
09/02/1997US5663734 GPS receiver and method for processing GPS signals
08/1997
08/27/1997EP0792031A2 Receiving antenna scanning system in the VHF region for cars with controllable switching unit
08/27/1997EP0791979A2 Phase tuning technique for a continuous transverse stub antenna array
08/27/1997EP0791978A2 An antenna
08/27/1997EP0791977A2 Mobile radio antenna
08/27/1997EP0791233A1 Transmit and receive loop antenna
08/26/1997US5661498 Polarization-universal radial line slot antenna
08/26/1997US5661494 High performance circularly polarized microstrip antenna
08/26/1997US5661457 Directional antenna configuration for asset tracking system
08/21/1997WO1997030489A1 Dual band antenna means incorporating helical and elongated radiating structures
08/20/1997EP0790711A1 Spread spectrum radio transmission digital mobile communication device
08/20/1997EP0790663A1 Surface mounting antenna and communication apparatus using the same antenna
08/20/1997EP0789938A1 An antenna control system
08/20/1997CN1157493A Antenna device
08/19/1997US5659322 Variable synthesized polarization active antenna
08/13/1997EP0789419A1 Device and method for transmission of information for systems with radiating waveguides
08/13/1997EP0789254A2 Detection of multiple articles
08/13/1997EP0789253A2 Detection of multiple articles
08/13/1997CN1157061A Method and antenna for providing omnidirectional pattern
08/12/1997US5657033 Cofired ceramic notch and horn antennas
08/12/1997US5657024 Radar module and radar system
08/12/1997CA1339283C Self monitoring/calibrating phased array radar and an interchangeable, adjustable transmit/receive sub-assembly
08/07/1997WO1997028615A1 Method and apparatus for cellular radiotelephone base stations using selected multiple diversity reception
08/07/1997CA2242056A1 Method and apparatus for cellular radiotelephone base stations using selected multiple diversity reception
08/06/1997EP0788186A1 Device in antenna units
08/06/1997EP0788185A1 Switch attenuator
08/06/1997EP0634058B1 Directional antenna, in particular a dipole antenna
08/05/1997US5654724 Antenna providing hemispherical omnidirectional coverage
08/05/1997US5654717 GPS/radio antenna combination
07/1997
07/30/1997EP0786826A2 Intermodulation scattering communications apparatus
07/30/1997CN1155947A Transmit and receive loop antenna
07/30/1997CA2196141A1 Portable radio apparatus
07/24/1997WO1997026714A1 Antenna system for dual mode satellite/cellular portable phone
07/24/1997CA2242480A1 Antenna system for dual mode satellite/cellular portable phone
07/23/1997EP0785595A1 Antenna
07/23/1997CN1155354A Planar antenna array and associated microstrip radiating element
07/22/1997US5650793 Centered longitudinal series/series coupling slot for coupling energy between a boxed stripline and a crossed rectangular waveguide and antenna array employing same
07/22/1997US5650792 Combination GPS and VHF antenna
07/22/1997US5650788 Terrestrial antennas for satellite communication system
07/16/1997CN1154579A Antenna apparatus, method of manufacturing same and method of designing same
07/15/1997US5649308 Multiformat auto-handoff communications handset
07/15/1997US5649306 Portable radio housing incorporating diversity antenna structure
07/15/1997US5649287 Orthogonalizing methods for antenna pattern nullfilling
07/15/1997US5648968 Narrow beam antenna systems with angular diversity
07/15/1997US5648787 Penetrating microwave radar ground plane antenna
07/15/1997US5648786 Conformal low profile wide band slot phased array antenna
07/15/1997US5648767 Transponder detection system and method
07/10/1997WO1997024626A2 Itinerary monitoring system
07/09/1997EP0783190A1 Passive entry x-y-z transponder antenna
07/09/1997EP0783189A1 Microwave planar antenna array for communicating with geostationary television satellites
07/04/1997CA2194113A1 Receive and/or transmit microwave planar array antenna and use of said antenna for receiving geostationary satellite television signals
07/03/1997WO1997023923A1 Low-cost communication phased-array antenna
07/01/1997US5644322 Spacecraft antenna reflectors and stowage and restraint system therefor
06/1997
06/26/1997WO1997023019A1 Antenna assembly
06/26/1997DE19549284A1 Train influencing device for point-wise transfer of data related to direction of travel from track to passing vehicles
06/25/1997EP0779994A1 Radio frequency identification tag
06/24/1997US5642358 Multiple beamwidth phased array
06/24/1997US5642120 Antenna device and wireless apparatus employing the same
06/19/1997WO1997022159A1 Dual polarized array antenna with central polarization control
06/19/1997WO1997014049A3 Gps receiver and method for processing gps signals
06/18/1997EP0778988A1 Antenna assembly
06/18/1997CN1152195A Antenna device
06/17/1997US5640170 Position and orientation measuring system having anti-distortion source configuration
06/12/1997DE19650544A1 Flat antenna and phase comparison mono pulsed radar system
06/12/1997DE19546010A1 Combined flat antenna for vehicle global positioning system and mobile radio
06/11/1997EP0778632A1 Radio altimeter protected against various detections
06/10/1997US5638079 Slotted waveguide array antennas
06/05/1997WO1997020360A1 Antenna device
06/04/1997EP0777293A1 Chip antenna having multiple resonance frequencies
06/04/1997EP0776550A1 A receiver with an antenna array
06/04/1997EP0776530A1 Method and antenna for providing an omnidirectional pattern
06/04/1997CN2255670Y Complex oblong vibrator television receiving atnenna
06/04/1997CN2255669Y Full frequency-channel multi-directional television receiving antenna
06/03/1997US5635941 Method and apparatus for feeding over-modulated message signals to antennas of an antenna array
05/1997
05/28/1997EP0775373A1 Waveguide antenna
05/28/1997EP0658281B1 Coaxial collinear element array antenna
05/27/1997US5633613 Modulator-coupled transmission structure and method
05/22/1997WO1997018674A1 Multichannel radio frequency transmission system to deliver wide band digital data into indepedent sectorized service areas
05/22/1997CA2237304A1 System for decrypting television from several satellites
05/22/1997CA2236088A1 Multichannel radio frequency transmission system to deliver wideband digital data into independent sectorized service areas
05/21/1997CN1150498A Microstrip antenna array
05/20/1997US5631898 For transmitting signals to a remote unit
05/14/1997EP0773598A2 Aperture antenna
05/14/1997EP0772893A1 Method for wireless communication system planning
05/13/1997US5630226 Low-noise downconverter for use with flat antenna receiving dual polarized electromagnetic waves
05/13/1997US5629713 Horizontally polarized antenna array having extended E-plane beam width and method for accomplishing beam width extension
05/09/1997WO1997016865A1 Transponder employing microstrip double patch antenna
05/07/1997EP0772254A1 A combined duplex filter and antenna
05/06/1997US5628053 Integrated multilayered microwave circuit and a method of fabricating it
05/06/1997US5627550 Wideband double C-patch antenna including gap-coupled parasitic elements
05/01/1997WO1997015961A1 A linear diversity antenna
05/01/1997WO1997015960A1 Antenna
04/1997
04/30/1997CN1148907A 天线系统 Antenna System
04/29/1997US5625369 Graphic-display panel antennas
04/29/1997US5625365 Dual-frequency microwave radio antenna system
04/24/1997WO1997015094A1 Wideband antenna array
04/23/1997CN2253056Y Active receiving antenna for television signal
04/22/1997US5623269 Mobile communication satellite payload
04/22/1997CA2076897C Broadband conformal inclined slotline antenna array
04/17/1997WO1997014192A1 Very small aperture terminal and antenna for use therein