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WO/1999/065108A1 |
The radiation efficiency of a radio antenna device is improved by changing the antenna directivity into a direction where obstacles are avoided. A whip antenna (102) is connected through a feeder (105) with a transmitting/receiving secti...
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WO/1999/065251A2 |
Apparatus and method for detecting calling location of radio signal using short pulses from a calling station. The apparatus for detecting calling location of radio signal, comprising: a plurality of antenna systems (101, 102 and 103), e...
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WO/1999/063617A1 |
The main object of the present invention is to provide a wide band antenna device integrated in a vehicle (101) for receiving and transmitting RF signals, without transmitting electromagnetic radiation into the compartment of said vehicl...
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WO/1999/063624A1 |
The present invention relates to antenna feeds (10, 30, 70, 78, 94) for use in linear or circularly polarised systems. In one embodiment of the invention, a cross-type antenna feed (30) comprises a cylindrical metal waveguide housing (12...
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WO/1999/062137A1 |
The present invention relates to the use of a planar graded index superstrate lens in combination with a planar antenna to reduce the antenna size without sacrificing its radiation efficiency. By combining this type of planar superstrate...
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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/1999/059220A2 |
The present invention relates to an impedance-matching device of antenna units, and in particular to antenna-matching in small radio units. An impedance-matching device (16) is arranged in a radio equipment (10) having an antenna (12), b...
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WO/1999/058996A1 |
A vehicle (including a land vehicle, watercraft, aircraft, spacecraft) transmitting-receiving system equipped with an antenna configuration can be operated in such a way that high-frequency signals which are emitted from another transmit...
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WO/1999/056642A1 |
A microwave applicator for applying electromagnetic radiation at microwave frequency comprises a coaxial input (5) for a microwave signal input, a waveguide (2) for receiving and propagating the microwave signal input, dielectric materia...
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WO/1999/057783A1 |
A patch antenna (10) having enhanced frequency response has a generally planar element formed of a substantially conductive material, and antenna feed conductor (14) electrically connected to the antenna element, and a generally planar p...
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WO/1999/056342A1 |
An antenna assembly (12) for a hand-held radio transceiver (10), examples of which include a cellular telephone and PCS device. A multiple element antenna assembly (12) is utilized to provide improved performance characteristics. The ant...
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WO/1999/056348A1 |
The invention concerns an antenna system for tracking moving satellites (2¿1?, 2¿2?) along predetermined trajectories, characterised in that said system comprises at least first (11) and second (12) transmitting/receiving elements movi...
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WO/1999/056347A1 |
The invention concerns an apparatus for tracking moving satellites, characterised in that it comprises at least a set of independent transmitting and/or receiving primary sources (6) arranged in the proximity of the apparatus focusing su...
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WO/1999/054955A2 |
The invention relates to a centrally fed antenna system whose effective reflector surface is formed in such a way that a maximum of the copolar far field is located on the illuminated coverage surface in line with far field requirements ...
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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/1999/052180A1 |
The invention concerns a multilayer focusing spherical lens (21) capable of being mounted on a transmitting/receiving antenna device of a remote transmitter/receiver system terminal, and having a concentric focal sphere (S). The inventio...
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WO/1999/048169A1 |
An antenna device used for a mobile communication unit such as a portable telephone operates satisfactorily on two or more frequency bands, can be adjusted to control its impedance characteristic, and can be manufactured with high yield....
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WO/1999/046831A1 |
A system for wire detection comprising a transmitter (14) for transmitting multi-polarity waves, means for receiving waves reflected off target and means for analyzing the polarization of the reflected waves to detect linearly polarized ...
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WO/1999/043049A1 |
A reflector antenna for polarised microwaves has a primary radiator, a subreflector transparent to microwaves of a desired polarisation and a main reflector for reflecting bundled microwaves with a polarisation rotated in the desired dir...
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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/1999/036990A1 |
The present invention relates to a method of, in an antenna arrangement, bringing about resolution in a second plane at right angles to a first plane, and also to an antenna arrangement. According to the invention, the phase centre of th...
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WO/1999/036989A1 |
Two antenna devices (11) and (12) are arranged on a pedestal device (13) which is rotatable about an axis of angle of depression. Each of the antenna devices (11, 12) is provided with a rotating mechanism for rotating about the axes of a...
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WO/1999/034478A1 |
A micro-diverse directional transmitting antenna array positioned proximately upon the boundary of a convex shape whereby the primary attenuation lobes of neighboring antennae overlap. Distinct transmissions by distinct directional anten...
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WO/1999/031757A1 |
An aperture-coupled antenna, comprising at least one antenna element including a number of substantially planar, mutually parallel radiating patches (1-3) being fed with microwave power from a feed network (6) via an aperture (5a, 5b) in...
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WO/1999/028993A1 |
The invention relates to a device for changing the polarization of an incident electromagnetic wave. Existing devices to change the polarization of an incident electromagnetic wave preserve signal decoupling, i.e. the relation between us...
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WO/1999/021247A1 |
A multi-element radio antenna assembly (10) includes a dielectric substrate element (32) having a pair of radiating conductor elements (30) disposed thereon. A pair of LC traps (34) and conductor elements (36) electrically coupled to the...
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WO/1999/019938A1 |
A satellite communications antenna (2) includes a low windload reflector (10) so that the antenna (2) may be used on high windload locations, such as on a ship (4). The reflector (10) has a support structure which includes a grid like st...
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WO/1999/017400A1 |
A method of producing an antenna element assembly is disclosed. The antenna element assembly (4) includes a rigid dielectric support member (1) carrying at least one radiating patch (2), the antenna element assembly being intended to be ...
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WO/1999/014507A1 |
In a method of fixing one or more elements (9) to a hollow square profile (7), the square profile is provided with holes which are closer to one longitudinal side than the opposite parallel one. The diameter of the holes is slightly larg...
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WO/1999/010950A2 |
The invention consists of improvements of reflector antennas with self-supported feeds. The feed consists of a waveguide tube, a dielectric joint and a sub-reflector. The tube is attached to the center of the rotationally symmetric refle...
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WO/1999/005754A1 |
An antenna device for receiving and/or transmitting dual polarized electromagnetic waves, comprising at least one antenna element (7). There are disposed parasitic elements (8, 9) of an electrically conductive material in a region, which...
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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/1998/057389A1 |
An antenna arrangement comprising an antenna reflector (10) and a transceiver horn (11) combined to form a compact unit (10-11) includes a dynamic vibration-dampened suspension device (16), first (12) and second (15) rotation frames, and...
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WO/1998/057392A1 |
Horn antenna for transmission of microwaves comprising a conical horn (2), for directional transmission and reception of microwaves, and at the center of the horn's narrowest part, a transition piece (3) separating a wave guide from the ...
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WO/1998/056069A1 |
An adaptive array antenna used in a base station of a CDMA mobile radio communication system, wherein a service area having a narrower sector angle than the element beam width is constructed by using a larger number of antenna elements t...
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WO/1998/054788A1 |
The invention relates to an antenna (6) for transmission of high frequency signals in a confined space (3, 4), the emission cone (5) being determined by a dielectric lens (12) around the primary transmitter (13), which dielectric lens (1...
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WO/1998/054785A1 |
A dual polarized aperture coupled patch antenna system (10) having a back plate (14), a ground plane (16) and a patch plane (12). The patch plane has a conductive patch layer (24) on one side. The ground plane is positioned between the p...
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WO/1998/054787A1 |
The invention relates to an enhanced dual polarized antenna system for transmitting and receiving electromagnetic waves whose cruciform transmitter module is directed at an angle of + 45� and -45� in relation to the vertical and cons...
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WO/1998/053525A1 |
An improved reflector antenna with far improved return loss than prior art subreflector antennas is disclosed herein. The invention uses a circular waveguide antenna feed (1) employing a non-planar subreflector (5) having a radial cavity...
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WO/1998/052247A1 |
The invention pertains to a compact, multibeam and self-contained radar sensor for a vehicle, with an antenna installation comprising a focussing element (15) and at least two first feeds (161-163, 181-183) arranged along a first straigh...
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WO/1998/050978A1 |
The invention concerns a reflector-sensor for receiving/transmitting electromagnetic waves respectively from and to a satellite and for collecting and converting an amount of solar energy into electric power, said reflector-sensor compri...
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WO/1998/049749A1 |
A hybrid logarithmic yagi antenna system (10) characterized by the absence of a balum or other conventional log periodic yagi antenna system balanced feed and impedance matching means. The reflector (12) is configured as a supporting con...
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WO/1998/049745A1 |
The invention concerns an antenna system, comprising at least two antennae (10, 11), each antenna (10, 11) capable of independently pointing in any solid angle direction. The invention is characterised in that the antennae (10, 11) are m...
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WO/1998/049746A1 |
The invention concerns a terminal-antenna device (1, 10) transmitting/receiving radio signals to and from satellites (2, 3) selected among a constellation of moving satellites, comprising means for determining the position of the satelli...
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WO/1998/048298A1 |
The invention discloses a cost-effective and simply designed automobile radar equipment system, containing the following key components: a focusing element and a support module with a row of antenna elements, a conductor network and comm...
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WO/1998/048476A1 |
The invention relates to radar equipment, specially for a motor vehicle, wherein high-resolution image representation of radar data is achieved using a small number of devices. The antenna elements are arranged on a rotating carrier modu...
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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/1998/044591A1 |
A passive reflective antenna (75) located near an active receiving antenna (71) is used to change the energy at the receiving antenna (71). The change in energy may be such as to remove a null created by multipath or to provide direction...
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WO/1998/044588A1 |
A dual-frequency-band patch antenna (200) capable of resonating at two different operating frequencies. The dual-frequency-band patch antenna (200) includes two conductive plates (202, 204) that are placed side by side, with one conducti...
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WO/1998/042041A1 |
The electrical length of the parasitic antenna of a pair of 2-element Yagi antennae is varied to vary the directivity of the antenna. A radio device (12) outputs a receiving signal corresponding to the received electric field strength of...
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