Patents
Patents for H01Q 21 - Aerial arrays or systems (25,127)
12/1997
12/30/1997US5703599 Injection molded offset slabline RF feedthrough for active array aperture interconnect
12/29/1997EP0814538A1 Integrated flat antenna and radio frequency unit for point-to-point microwave radio communications
12/29/1997EP0814537A1 Method and radiating device below the horizon having a high ratio front/backward radiation
12/24/1997WO1997049141A1 Meander antenna device
12/23/1997US5701603 Radio apparatus having a plurality of antennas
12/23/1997US5701591 Multi-function interactive communications system with circularly/elliptically polarized signal transmission and reception
12/18/1997WO1997048237A1 Paging device having a transmit and receive antenna within a single enclosure
12/17/1997EP0813310A1 Method and arrangement relating to signal transmission
12/16/1997US5699069 Communication system
12/10/1997EP0812028A2 Apparatus for and method of detecting a reflector within a medium
12/10/1997EP0812026A2 A communication system and methods utilizing a reactively controlled directive array
12/10/1997EP0812005A2 Post-reception focusing in remote detection systems
12/10/1997EP0811277A1 Joint demodulation using spatial maximum likelihood
12/10/1997EP0677212B1 Helical antenna system
12/10/1997CN1167545A Antenna control system
12/09/1997US5697075 Diversity apparatus for a global positioning system antenna
12/04/1997WO1997045892A1 Elongated antenna
12/02/1997US5694133 Adaptive direction finding system
11/1997
11/27/1997WO1997044978A1 Method and system for selecting an antenna beam of a base station of a radio system
11/27/1997WO1997044914A1 Pcs cell site system for allowing a plurality of pcs providers to share cell site antennas
11/26/1997CN1166259A Dynamic channel allocation for sectorized radio access units of a mobile communication system
11/26/1997CN1166249A Spread spectrum radio transmission digital mobile communication device
11/25/1997US5691730 Retractable broad-band antenna for portable telephones
11/25/1997US5691726 GPS/radio antenna combination
11/20/1997WO1997043799A1 Flat antenna
11/19/1997EP0807992A1 Logarithmic spiral array
11/19/1997EP0807990A1 Circularly symmetric, zero redundancy, planar array antenna
11/18/1997CA2111394C Slotted leaky waveguide array antenna
11/13/1997DE19627154C1 Digital radio communication station for mobile communications system
11/12/1997EP0806121A1 Method and apparatus for providing redundant radio coverage within a cellular communication system
11/12/1997CN1164779A Information transmission facilities and method using radiating guide system
11/11/1997US5686928 Phased array antenna for radio frequency identification
11/06/1997WO1997041622A1 Antenna system
11/06/1997WO1997041621A1 Dual band antenna
11/06/1997WO1997041619A1 Composite antenna for cellular and gps communications
11/05/1997EP0805516A1 An omnidirectional antenna scheme
11/05/1997EP0805515A2 Antenna cross-polar suppression means
11/05/1997EP0805510A2 Active array self calibration
11/05/1997EP0805508A2 Antenna array with radiation adjusting device
11/05/1997EP0805360A2 Multibeam radar system
11/04/1997US5684491 High gain antenna systems for cellular use
10/1997
10/30/1997WO1997040594A1 Dividable transmit antenna array for a cellular base station and associated method
10/30/1997WO1997040548A1 Composite antenna
10/30/1997CA2249583A1 Dividable transmit antenna array for a cellular base station and associated method
10/29/1997EP0803932A1 Multiple band folding antenna
10/29/1997EP0803930A2 Antenna system for controlling and redirecting communication beams
10/29/1997CN1163495A Antema for mobile radio communication
10/28/1997US5682165 Active array self calibration
10/28/1997US5682143 Radio frequency identification tag
10/23/1997WO1997039494A1 Antenna having improved front-to-back ratio
10/23/1997WO1997039493A1 Portable radio device
10/22/1997EP0802579A2 Multi sector antenna
10/22/1997EP0802578A1 Planar antenna array and associated microstrip radiating element
10/21/1997US5680633 Modular, portable data processing terminal for use in a radio frequency communication network
10/16/1997WO1997038465A1 Dual polarization antenna array with very low cross polarization and low side lobes
10/15/1997EP0801437A2 Beam forming network for multiple-beam-feed sharing antenna system
10/15/1997EP0801434A1 Antenna
10/14/1997US5678202 For receiving an electromagnetic signal
10/12/1997CA2023481A1 Multiple polarization microstrip antenna, namely elementary antenna for faceplate-type network
10/09/1997WO1997037441A1 Method and apparatus for polarization diversity in a base station using a plurality of reception antennas
10/09/1997WO1997037440A1 Radio station with circularly polarised antennas
10/09/1997WO1997037398A1 Antenna assembly for radiotelephonic device
10/09/1997CA2249658A1 Radio station with circularly polarised antennas
10/08/1997EP0800231A2 Planar antenna module
10/08/1997EP0799507A1 Array of radiating elements
10/07/1997US5675346 Annular microstrip antenna element and radial line antenna system employing the same
10/07/1997US5675345 Compact antenna with folded substrate
10/07/1997US5675343 Radiating-element array antenna
10/01/1997EP0798807A2 TEM slot array antenna
10/01/1997CN2263831Y High-gain multi-element antenna
09/1997
09/30/1997US5673052 Near-field focused antenna
09/25/1997WO1997035360A1 Multi-frequency antenna
09/25/1997WO1997035359A1 Array feed for axially symmetric and offset reflectors
09/25/1997WO1997035358A1 Low cost compact electronically scanned millimeter wave lens and method
09/25/1997WO1997035355A1 Planar emitter
09/24/1997EP0797268A2 Antenna apparatus
09/24/1997EP0533810B1 Microwave antennas
09/24/1997CN2263406Y All channel receiving antenna for TV set
09/18/1997WO1997034337A1 Method and device for adaptive polarization conversion
09/18/1997DE19615497A1 Planarer Strahler Planar radiator
09/18/1997DE19532731A1 Transceiver antenna especially for car telephone and radio
09/17/1997EP0796024A2 Low power, short range point-to-multipoint communications system
09/17/1997EP0795928A2 Antenna with single or double reflector, with shaped beams and linear polarisation
09/17/1997EP0795211A1 An antenna feed network arrangement
09/16/1997US5668558 Apparatus capable of receiving circularly polarized signals
09/12/1997WO1997033382A1 An improved gps receiver utilizing a communication link
09/12/1997WO1997033342A1 Planar array antenna
09/12/1997WO1997033341A1 Single-wire spiral antenna
09/12/1997CA2217730A1 Planar array antenna
09/11/1997DE19608622A1 Aerial system with two aerials
09/10/1997EP0793866A1 Planar antenna design
09/10/1997EP0793865A1 Electrical conducting shell structure for coaxial collinear array antenna
09/09/1997US5666128 Modular supertile array antenna
09/09/1997US5666127 Subarray panel for solar energy transmission
09/04/1997WO1997032360A1 Combination satellite and vhf/uhf receiving antenna
09/04/1997WO1997032359A1 Folded bow-tie antenna
09/04/1997WO1997032355A1 Antenna device for vehicles
09/04/1997WO1997032353A1 Orthogonal switched antenna system
09/03/1997EP0792564A1 Dynamic channel allocation for sectorized radio access units of a mobile communication system
09/03/1997EP0707762B1 Mobile radio aerial installation