Patents
Sitemap › H01 - Basic electric elements › H01Q - Aerials › H01Q 21 - Aerial arrays or systems
Patents for H01Q 21 - Aerial arrays or systems (25,127)
01/1992
01/14/1992US5081464 Method and apparatus for producing multiple, frequency-addressable scanning beams
01/14/1992US5081463 Method and system for forming desired radiation pattern with array antenna
01/09/1992DE4120652A1 Transmit or receiver aerial covering VHF, UHF and SHF ranges - has long tube section with surface slot pattern and enclosed by metal plates
01/08/1992CN2092818U Antenna converted into 8 shape for 1-57 frequency channels of tv. set
01/07/1992US5079561 Planar array waveguide antenna with L-shaped series/series coupling slots
01/07/1992US5079557 Phased array antenna architecture and related method
01/02/1992EP0463649A1 Planar antenna for linearly polarized waves
01/02/1992EP0463263A1 Circularly-polarized omnidirectionnal antenna with maximum horizontal gain
01/01/1992CN1057549A Elimination method of co-channel co-tower (mast) antenna mutual interference
12/1991
12/27/1991EP0462864A1 Device for feeding radiating elements of an antenna array and its application for an antenna of a landing help system type MLS
12/26/1991WO1991020108A1 Flat antenna
12/26/1991WO1991020107A1 Automatic direction finder sense antenna
12/24/1991US5075691 Multi-resonant laminar antenna
12/24/1991CA1293563C Electromagnetically coupled printed-circuit antennas having patches or slots capacitively coupled to feedlines
12/24/1991CA1293562C Planar microwave antenna with suspended line feed
12/17/1991CA1293314C Guidance equipment for microwave landing system
12/15/1991WO1991020109A1 Microwave antennas
12/15/1991CA2085131A1 Microwave antennas
12/12/1991WO1991019330A1 Four-way antenna
12/11/1991EP0389619A4 Curved plastic body with circuit pattern and method of making
12/10/1991US5072232 End-fed rod antenna
12/10/1991US5072229 Windshield antenna for an automotive vehicle
12/04/1991EP0459616A2 Aircraft antenna with correction of errors introduced by a coning of the antenna beam and by aircraft banking
12/04/1991EP0248886B1 High efficiency optical limited scan antenna
12/03/1991US5070339 Tapered-element array antenna with plural octave bandwidth
12/02/1991WO1991019331A1 Omni-directional antenna array
12/02/1991CA2083706A1 Omni-directional antenna array
12/01/1991WO1991019332A1 Antenna which assures high speed data rate transmission links between satellites and between satellites and ground stations
12/01/1991CA2064717A1 Antenna which assures high speed data transmission connections between satellites and between satellites and ground stations
11/1991
11/28/1991WO1991018428A1 Planar orientable antenna operating in the microwave band
11/26/1991US5068672 Balanced antenna feed system
11/26/1991US5068671 Orthogonally polarized quadraphase electromagnetic radiator
11/26/1991US5068670 Broadband microwave slot antennas, and antenna arrays including same
11/26/1991US5068669 Power beaming system
11/26/1991US5068668 Adaptive polarization combining system
11/21/1991EP0457500A2 Dual linear and dual circular polarization antenna
11/21/1991EP0456680A1 Antenna arrays.
11/19/1991US5067147 Microcell system for cellular telephone system
11/19/1991US5066956 Azimuth-stacked radar method and apparatus
11/13/1991EP0456579A1 Plane orientable antenna, functioning in the microwave range
10/1991
10/31/1991WO1991017586A1 A flat plate antenna
10/31/1991DE4013165A1 Array antenna using microstrip line techniques - has individual radiator elements on either side of symmetrical supply network
10/31/1991CA2080244A1 Flat plate antenna
10/30/1991EP0454582A1 Radio direction finder antenna system with omnidirectional coverage
10/30/1991CN1014572B Slot antenna
10/29/1991US5061943 Planar array antenna, comprising coplanar waveguide printed feed lines cooperating with apertures in a ground plane
10/29/1991US5061937 Array antenna apparatus
10/21/1991WO1991017585A1 Microstrip radiator for circular polarization free of welds and floating potentials
10/16/1991EP0451497A1 Method for forming the radiation pattern of an active antenna for radar with electronic scanning, and antenna using this method
10/16/1991CN1014383B Microwave antenna
10/15/1991US5057106 Microwave balloon angioplasty
10/15/1991CA1290847C Vehicle antenna with shiftable gain patterns
10/09/1991EP0450881A2 Microstrip antennas
10/09/1991EP0450191A2 Transducer arrangement
10/08/1991US5055852 Diplexing radiating element
10/02/1991EP0449492A1 Patch antenna with polarization uniformity control
10/02/1991DE4010242A1 Antenna assembly for combined radar-video system - has optically transparent segment with conductive grid for radar wave reflection
10/02/1991DE4008805A1 Radar system with transmit and reception aerials - one of which has circular diagram, rotating in azimuth, and reduced performance slot
09/1991
09/29/1991CA2037451A1 Patch antenna with polarization uniformity control
09/25/1991EP0448533A1 A waveguide antenna having a plurality of broad-side slots provided with a spatial filter
09/25/1991EP0448318A2 Array antenna system structure
09/25/1991CN2085568U Telecontrol indoor tv aerial
09/24/1991US5051753 Array antenna system with direction finding capability
09/19/1991WO1991009317A3 Comb generator, device and process for calibrating measurement sections
09/18/1991EP0447218A2 Plural frequency patch antenna assembly
09/18/1991EP0447018A1 Antenna
09/17/1991US5050236 Radio frequency field strength enhancer
09/17/1991US5049895 Flat circular waveguide device
09/12/1991DE4007722A1 Field generator radiating EM energy - has rectangular frame transmit aerial for HF conversion into uniform, radiated electric field
09/11/1991EP0445795A2 Forward looking radar
09/11/1991EP0445794A2 Forward-looking radar
09/11/1991EP0445694A1 Active printed circuit antenna system having high efficiency for a scanning radar for operation in space
09/11/1991EP0445517A2 Array antenna with slot radiators offset by inclination to eliminate grating lobes
09/11/1991EP0445453A1 Antenna
09/10/1991US5048116 Signal routing system
09/10/1991US5047785 Split-phase technique for eliminating pattern nulls from a discrete guard antenna array
09/05/1991DE4106250A1 Polarisation independent dipole aerial array - has number of identical aerial units symmetrically arranged in two dimensional array each unit with dipole element
09/04/1991CN2084235U Omnibearing tv receiving aerial
09/03/1991WO1991013370A1 Time domain radio transmission system
09/03/1991US5045862 Dual polarization microstrip array antenna
08/1991
08/28/1991EP0443997A1 A method of reducing the influence of fading of a Viterbi-receiver having at least two antennas
08/28/1991CN1054156A Method of reducing influence of fading of viterbi receiver having at least two antennas
08/27/1991US5043738 Plural frequency patch antenna assembly
08/22/1991WO1991012637A1 Antenna
08/21/1991EP0442562A1 Antenna system with adjustable beam width and beam orientation
08/21/1991EP0385978A4 Method and apparatus for hyperthermia treatment
08/21/1991CN2083344U All-channel tv receiving aerial
08/20/1991US5041835 Electronic scanning type array antenna device
08/20/1991US5041834 Artificial ionospheric mirror composed of a plasma layer which can be tilted
08/14/1991EP0441204A2 Slot radiator assembly with vane tuning
08/14/1991EP0441180A1 Integrated circuits containing microwave circuits
08/13/1991US5039995 Distributed antenna system
08/13/1991US5039994 Dipole arrays
08/13/1991US5039993 Periodic array with a nearly ideal element pattern
08/08/1991DE4001952A1 Double exciter for reflector antenna - has dielectric region with low dielectric constant
08/07/1991EP0440126A1 Slotted waveguides antenna, in particular for space radar
08/07/1991EP0439970A1 Slotted wave guide radiator with non-inclined slots excited by conductive printed patterns
08/07/1991CN2082465U Unidirectional balcony type tv receiving autenna with double-deck
08/06/1991US5038151 Stationary
08/06/1991US5038150 Feed network for a dual circular and dual linear polarization antenna
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