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WO/2000/022696A1 |
A Rotman lens (12, 13) includes a first insulating layer (26) having a high dielectric constant and a second insulating layer (46) having a low dielectric constant. Metalization provided on the first insulating layer includes a lens port...
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WO/2000/019559A1 |
A planar antenna having a simple thin structure, a small transmission loss in a high frequency band including sub-millimeter and millimeter waves, and a high aperture efficiency, produced with high productivity and at low cost, and reali...
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WO/2000/014826A1 |
A dielectric resonator antenna (100) having a resonator (104) formed from a dielectric material mounted on a ground plane (108). The ground plane (108) is formed from a conductive material. First and second probes (112, 116) are electric...
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WO/2000/011752A1 |
An efficient multi-beam antenna system (10) for use with a high capacity communications satellite or spacecraft (11) that maximizes frequency re-use of the allocated frequency spectrum. The antenna system (10) has first and second offset...
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WO/2000/011751A1 |
An antenna system (30) includes a lens (40, 50) and a plurality of non-uniform feed elements (42, 52). The non-uniform feed elements (42, 52) are coupled to the lens system and operable to shape each of a plurality of beams (32) to match...
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WO/2000/011754A1 |
A two-dimensionally steered antenna system (40) includes a planar lensing system (64, 94) operable to focus signals received from a plurality of ground-based cells (20). A first steering system (66) is operable to steer a beam (32) for e...
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WO/1999/067854A1 |
The invention relates to an antenna system comprising a number of radiating elements which are arranged in the shape of a dipole field and serve to generate a plurality of lobes of a main antenna. Some of the radiating elements of the di...
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WO/1999/066596A1 |
A compact RF monopulse receiver circuit having a relatively low noise figure which is particularly useful for operation in the millimeter wave frequency range is described. The compact monopulse receiver finds use in small projectile and...
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WO/1999/060656A2 |
A low-cost spherical reflector and a mechanically scanned antenna system utilizing such reflectors. The system employs one or more (substantially similar) primary spherical reflectors (each a truncated spherical surface), each having an ...
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WO/1999/060661A1 |
The invention concerns a device for transmitting and receiving microwaves comprising a planar radiating element. Said device is characterised in that the radiating element (60) has, for transmitting and receiving, substantially orthogona...
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WO/1999/060657A1 |
The invention concerns a station having an antenna system comprising a housing (15) for fixing it to a support. Said antenna system may consist of one or several radiating slots. It is designed for transmitting, in one first direction su...
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WO1999036992A9 |
An array antenna system for forming a plurality (e.g. 64) independently steered beams comprising an array of antenna elements (12), a first and a second plurality of series feed signal paths (20, 26), a plurality of phase shifters (24), ...
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WO/1999/057574A1 |
The invention provides a method and apparatus for determining the direction of a signal such as for example a received radio signal in a cellular mobile communication system. At lest two antenna arrays (10, 12) are connected to associate...
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WO/1999/056349A1 |
An apparatus and a system are disclosed wherein a beam having the best performance for the present downlink transmits the signal carrying information. In another beam transmitted, in a corresponding manner having the best performance in ...
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WO/1999/054958A1 |
The invention concerns a frequency converter arrangement for parabolic antennae receiving vertical and horizontal linear polarisation signals, transmitted by two geostationary satellites not far from each other. The arrangement comprises...
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WO/1999/052181A2 |
A transmitter is provided for simultaneously transmitting a plurality of signals in a plurality of directive beams to corresponding destination stations, each destination station located in a separate fan within a service area. The trans...
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WO/1999/044307A2 |
Antenna-gain diversity is obtained in the following manner. A first and a second antenna element (A1, A2) are electro-magnetically coupled. A switchable antenna-coupler (SAC) is switchable between: a first antenna-coupling state (S1) in ...
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WO/1999/043048A1 |
Cellular antenna systems are provided for airship-type support at a position in the stratosphere. A single antenna system (20) may provide cellular communication for earth-based users located anywhere within a circle 400 miles in diamete...
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WO/1999/040687A1 |
A wireless communication system (5) utilizing a frequency scanner (23) to perform frequency scanning to direct communication data. Base station and mobile unit (20) embodiments are presented as are interference suppression techniques, TD...
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WO/1999/038228A1 |
A multibeam antenna comprises a parabola reflector, a down converter, a supporting arm, and a holding member. The down converter comprises, in one unit, a multi-primary radiator, and a housing incorporating a conversion circuit. The mult...
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WO/1999/035766A1 |
A method (400, fig. 4) for beam management in a satellite communication system (10) which simplifies cell-to-cell hand-offs within a footprint (90) of a satellite (20) and between two or more satellites (20) is disclosed. The method incl...
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WO/1999/027385A1 |
An automotive Forward Looking Sensor (FLS) including a transmit antenna, a receive antenna and a receiver circuit for determining whether RF leakage from the transmit antenna to the receive antenna exceeds a predetermined threshold level...
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WO/1999/026441A1 |
A system and method for providing independent sector mapping of signals associated with a first (Input 1¿1? - 1¿m?) and second (Input 2¿1? - 2¿p?) service utilizing a same multibeam (Beam ¿1? - Beam ¿n?) antenna system is disclosed...
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WO/1999/018631A1 |
An antenna subsystem (120) which comprises an electronic scanning reflector antenna (400) is used for the formation of single and multiple beams. Reflecting surface (420) is covered with at least one dielectric layer (430) which is used ...
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WO/1999/012229A1 |
A ferrite scanning line source (100) is formed of a ferrite toroid (102) and one or more dielectric slabs (105, 106) mounted to a side of the toroid (102). A signal propagating through the waveguide is phase shifted by the magnetization ...
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WO/1999/010999A2 |
A system for providing the output of a computer (10) to a television set (12) via wireless channel (30) within a building is provided. The system includes a transmission antenna unit (22), a transmission processor (18), a reception anten...
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WO/1999/000868A1 |
The invention concerns a telecommunication system antenna for communicating, in transmission and in reception, with a wide zone, of variable position relative to the antenna. Said antenna comprises motors (80, 82) for pointing the antenn...
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WO/1999/000870A1 |
The invention concerns an antenna with high scanning capacity, comprising a panel of static radiating elements (30) controlled to emit in variable directions relative to a direction (38) perpendicular to the panel plane. Reflectors (34, ...
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WO/1999/000916A1 |
The invention concerns a telecommunication system wherein the earth is divided into zones (26) within which communications are carried out by transmitting and receiving means located in a spacecraft, such as a satellite assigned to commu...
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WO/1998/050981A1 |
The invention relates to an apparatus and a method for simultaneously generating, with the same radio antenna apparatus (10), a number of narrow beams and a wide beam, covering substantially the same area covered by the individual pointe...
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WO/1998/051023A1 |
A satellite communication network (10) coordinates multiple steerable satellite beams (28) with user requests for connections requiring varying bandwidth in real-time. A control station (22) gathers user requests for connections (64) and...
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WO/1998/045725A1 |
Disclosed is a radar system, including for use in a vehicle, with an antenna installation comprising at least one power supply system (2, 3, 4) and at least one focussing device (9) characterized in that the antenna installation is provi...
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WO/1998/038693A1 |
A base station including an antenna array (202) that can be used to generate multiple well separated pencil radiation beams. Alternatively, these beams can be combined, without significant loss, to create a wide angle beam. Non-orthogona...
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WO/1998/036471A1 |
A method of directional radio communication and mobile communication network between a first station and a second mobile consists of the following steps. Consecutive bursts of communication data transmitted from the second station are id...
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WO/1998/034294A2 |
A multi-dimensional beamforming device that performs consecutive one-dimensional operations. For example, beamsteering for a two-dimensional array can include a projection of a beam onto each of the respective axes of the array. In such ...
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WO/1998/033233A1 |
Directional-beam generative apparatus (62), and an associated method (102) for a radio communication station (36) forms directional antenna beam patterns (22, 34, 36, 52, 54, 56) for the communication of communication signals with remote...
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WO/1998/032188A2 |
A digitally beam formed phased array antenna capable of both transmitting and receiving signals is constructed from a series of digitally controlled antenna elements. To transmit signals, a series of direct digital synthesizers (30) is u...
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WO/1998/027612A1 |
The invention relates to a high-mode operating resonator, e.g. a coaxial waveguide, wherein various oscillation modes of an electromagnetic field are coupled in and superimposed on each other. The mixed mode thus arising from the excitat...
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WO/1998/026472A1 |
A phased array includes a first plurality of radiators having a first polarization and a second plurality of radiators having a second polarization, different from said first polarization. The phased array is constructed such that radiat...
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WO/1998/024145A1 |
A microwave antenna wherein the microwaves are radiated from or received by a thin layer radiating receiving microwave guide section (28) in which a dielectric slab (9) is sandwiched between a metallic bottom plate (2) and a metallic rad...
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WO/1998/020579A1 |
Disclosed is a lens arrangement intended to focus radar waves for range finding sensors, especially for automotive vehicles, and characterized by a side-by-side arrangement of a plurality of lens-elements to form one assembly, which enab...
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WO/1998/017078A2 |
A method and apparatus for improving the reception characteristics for lower-power portable telephone units at a base station site (8) is disclosed. A normal three-sector antenna site (8) is divided into a plurality of sectors each havin...
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WO/1998/017022A2 |
A first antenna (16) at a user location (14) receives signals at a first frequency where the signals are travelling only within a first directional reception range as measured from a centerline (28) of the first antenna (16). The first a...
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WO/1998/010305A1 |
A microwave radio frequency landing system includes an aircraft borne transmitter/receiver (transceiver) (56) and a ground unit. The ground unit comprises a dielectric material lens and a transponder module array. The transceiver (56) tr...
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WO/1998/008270A1 |
A reflector antenna is disclosed for simultaneously receiving the radiation fields of n$m(G)2 satellites positioned on orbit at azimuthally offset positions with respect to one another. The reflector antenna has a reflector (1), in parti...
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WO/1998/007211A1 |
A feed system for an antenna has a set of inner and outer coaxial waveguides (70, 60) which apply, respectively, both higher and lower frequency radiations to a common radiating aperture provided by a horn (68) and a shroud (62). Lower f...
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WO/1998/004017A1 |
A geosynchronous, multi-beam phased array satellite system (20) transmits to and receives from the earth radio frequency signals. The satellite system (20) has transmit (28) and receive phased arrays (29), beamformers (26 and 27), switch...
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WO/1998/001922A1 |
A system for establishing and utilizing a wireless communication system using a lens antenna having a dielectric material lens. The lens focuses output radio frequency (rf) signals into narrow beam rf signals which are directed to a spec...
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WO/1998/001771A1 |
A beam sharpened, low sidelobe antenna is obtained by segmenting the antenna to provide two sub-antennas (13, 15), one of which is arranged as an interferometer (15a, 15b). The output signals of the two antennas are added and subtracted ...
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WO/1997/040594A1 |
A time division multiple access base station communicates with a plurality of mobile stations in a cellular communications system using a plurality of time division multiple access (TDMA) time slots. The base station includes an antenna,...
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