Patents
Sitemap › H01 - Basic electric elements › H01Q - Aerials › H01Q 21 - Aerial arrays or systems
Patents for H01Q 21 - Aerial arrays or systems (25,127)
11/1999
11/17/1999EP0957537A2 Circularly polarized cross dipole antenna
11/17/1999EP0957535A1 Electromagnetically coupled microstrip antenna
11/17/1999EP0957534A1 Circularly polarised HF wave transceiver
11/17/1999EP0957533A1 Combination antenna device
11/17/1999EP0957371A2 Radar sensor
11/17/1999EP0956653A1 Pcs cell site system for allowing a plurality of pcs providers to share cell site antennas
11/17/1999EP0956652A1 Transmitter unit and base station
11/17/1999EP0956614A1 Microstrip distribution array for group antenna and such group antenna
11/17/1999EP0956609A1 A communication system, a primary radio station, a secondary radio station, and a communication method
11/17/1999CN1235391A Self adaptable array antenna for pre-optimized shape beam for code division multi-access system
11/17/1999CN1046597C Planar antenna with helical antenna array and waveguide
11/16/1999US5987308 Portable terminal having a shared antenna with reduced standing wave ratio
11/16/1999US5986620 Dual-band coupled segment helical antenna
11/16/1999US5986611 Steerable disk antenna
11/16/1999CA2153465C Communications antenna structure
11/16/1999CA2131720C Directional antenna, in particular dipole antenna
11/16/1999CA2023210C Spiral-antennae system
11/11/1999WO1999057783A1 Broad band patch antenna
11/11/1999WO1999044307A3 Antenna-gain diversity
11/11/1999WO1999036992A9 Array antenna having multiple independently steered beams
11/11/1999DE19820835A1 Transmission/reception device for vehicle, e.g. aircraft
11/10/1999EP0955690A2 Compact wide band receiving and transmitting antenna
11/10/1999EP0955689A1 Plane antenna, and portable radio using same
11/10/1999CN1234915A Antenna device with improved channel isolation
11/10/1999CN1234628A Plane antenna and portable radio device using same
11/10/1999CN1234627A Antenna and production method therefor
11/09/1999US5982339 Antenna system utilizing a frequency selective surface
11/09/1999US5982338 Rectangular coaxial line to microstrip line matching transition and antenna subarray including the same
11/09/1999US5982337 Cellular antennas for stratosphere coverage of multi-band annular earth pattern
11/09/1999US5982328 Device with radiating elements
11/09/1999US5982326 Active micropatch antenna device and array system
11/09/1999CA2041572C Dual band frequency reuse antenna
11/06/1999CA2240652A1 Use of sectorized polarization diversity as a means of increasing capacity in cellular wireless systems
11/04/1999WO1999056346A1 Slot array antenna
11/04/1999WO1999056344A1 A left-hand circular polarized antenna for use with gps systems
11/03/1999EP0954056A1 Antenna system
11/03/1999EP0953851A2 Direct sequence spread spectrum radar
11/02/1999US5977930 Phased array antenna provided with a calibration network
11/02/1999US5977929 Polarization diversity antenna
11/02/1999US5977925 Device for antenna systems
11/02/1999US5977924 TEM slot array antenna
11/02/1999US5977919 TV antenna apparatus for vehicles
11/02/1999US5977916 Difference drive diversity antenna structure and method
11/02/1999US5977915 Microstrip structure
11/02/1999US5977904 Structure of aperture antenna and radar system using same
10/1999
10/29/1999CA2270337A1 Direct sequence spread spectrum radar
10/28/1999WO1999055012A2 Antenna diversity system
10/28/1999WO1999054960A2 Phased array antenna calibration system and method using array clusters
10/27/1999EP0952625A2 Antenna for several radio communications services
10/27/1999CN1233084A Multi-filar helical antenna and portable radio
10/26/1999US5973648 Radio antenna arrangement with a patch antenna for mounting on or adjacent to the windshield of a vehicle
10/26/1999US5973647 Low-height, low-cost, high-gain antenna and system for mobile platforms
10/26/1999US5973644 Planar antenna
10/26/1999US5973641 Antenna feed network arrangement
10/26/1999US5972156 Method of making a radio frequency identification tag
10/26/1999CA2206194C Method and system for digital beam forming
10/21/1999WO1999053567A1 Three dimensional micromachined electromagnetic device and associated methods
10/21/1999WO1999053566A1 Antenna assembly and a mobile radio apparatus using the same
10/21/1999WO1999009610A8 Antenna unit and signal switching circuit
10/21/1999DE19817573A1 Antenne für mehrere Funkdienste Antenna for multiple radio services
10/21/1999CA2328708A1 Three dimensional micromachined electromagnetic device and associated methods
10/20/1999EP0951090A2 Antenna apparatus
10/20/1999EP0950270A1 Method for integrating antennas in a distributed antenna system
10/20/1999EP0950194A2 An improved gps receiver utilizing a communication link
10/20/1999CN1232325A Portable radio device
10/19/1999US5969690 Mobile radio antenna
10/19/1999US5969689 Multi-sector pivotal antenna system and method
10/19/1999US5969685 Pivotable multiple frequency band antenna with capacitive coupling
10/19/1999US5969661 Apparatus for and method of detecting a reflector within a medium
10/14/1999WO1999052181A2 Multi-beam transmit array with low intermodulation
10/14/1999DE19905725A1 Array antenna structure of vehicle mounting radar
10/14/1999DE19814048A1 Planar multi-patch, multi-range antenna with key-shaped directional diagram for low earth orbit satellites
10/14/1999DE19809109C1 Frequency trimming method for group of coupled antennae
10/13/1999EP0948831A1 Transmitter interference rejection
10/13/1999EP0677210B1 Transmit and receive antenna having angled crossover elements
10/13/1999CN1231773A Dual-band coupled segment helical antenna
10/13/1999CN1231527A Bipolarization antenna for base station
10/12/1999US5966102 Dual polarized array antenna with central polarization control
10/12/1999US5966101 Multi-layered compact slot antenna structure and method
10/12/1999US5966097 Antenna apparatus
10/07/1999WO1999050933A1 Low power switched diversity antenna system
10/07/1999WO1999050780A1 Device for generating a rotating magnetic field in space for powering contactless electronic labels
10/07/1999WO1999043044B1 System and method for increasing the isolation characteristic of an antenna
10/07/1999WO1999036992A3 Array antenna having multiple independently steered beams
10/06/1999EP0658282B1 Q equalization in dual-element end-fire array antennas
10/06/1999CN1231071A Planar antenna with patch radiators for wide bandwidth and pass band function
10/06/1999CN1230800A Built-in antenna for radio communication terminals
10/05/1999US5963175 For use on a spacecraft
10/05/1999US5963173 Antenna and transmitter arrangement for EAS system
10/05/1999US5963168 Antenna having double-sided printed circuit board with collinear, alternating and opposing radiating elements and microstrip transmission lines
09/1999
09/30/1999WO1999049337A1 An interrogator for interrogating an rfid transponder
09/29/1999EP0945917A2 Antenna arrangement and mobile terminal
09/29/1999EP0944933A1 Dual polarized electronically scanned antenna
09/29/1999EP0944932A1 Radial line slot antenna
09/29/1999CN1230037A Multifrequency microstrip antenna and device including said antenna
09/28/1999US5959588 Dual polarized selective elements for beamwidth control
09/28/1999US5959579 Transmitter interference rejection
09/28/1999US5959578 Antenna architecture for dynamic beam-forming and beam reconfigurability with space feed
09/23/1999WO1999048045A1 Article identification apparatus and method
09/23/1999WO1999036986A3 Boxhorn array architecture using folded junctions
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