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Matches 551 - 600 out of 2,848

Document Document Title
WO2002014900A3
A video amplifier for a radar receiver includes a temperature compensating attenuator. The attenuator includes a temperature sensitive device, such as a thermistor, arranged in a voltage divider network and is coupled in cascade between ...  
WO2002014098A3
In accordance with the present invention, an adaptive cruise control system includes a radio frequency (RF) transmit receive (TR) sensor module (or more simply "sensor") disposed such that a detection zone is deployed in front of a vehic...  
WO2002007259A3
A base station clustered adaptive antenna array includes a plurality of clusters of antenna elements. Each cluster is spaced away from an adjacent cluster by a first predetermined spacing related to receive-mode beamforming and includes ...  
WO2002006850A3
A radar system includes a null processor coupled to transmit receive modules. The null processor inserts nulls in the sum pattern at locations for suppressing a jamming source. The null processor determines the difference pattern based u...  
WO2002015323A3
A multiple beam array antenna system comprises a plurality of radiating elements provided from stripline-fed open-ended waveguide coupled to a Butler matrix beam forming network. The Butler matrix beam forming network is coupled to a swi...  
WO/2002/043278A1
The present invention relates to an apparatus of dividing a multi-beam from a base station for several n sectors and combining vice versa in a mobile communication system. The present apparatus includes a multi-beam forming module consis...  
WO/2002/041449A2
A combined directional beam and omnidirectional antenna comprises a unitary structure having a plurality of antennas being configured and oriented to achieve both directional beam coverage and omnidirectional beam coverage.  
WO/2002/041450A1
An improved antenna arrangement for base stations in communication networks is disclosed. The arrangement has panel apertures (3) generating a multi-beam pattern simultaneously as producing acceptable side-lobe levels. A typical arrangem...  
WO2001048509A3
The invention relates to an automotive radar system that comprises at least one element transparent for a sensor radiation for focusing the sensor radiation and/or at least one radome which is not prefocused in the beam path. At least on...  
WO/2002/039141A1
The invention relates to a radar device comprising means (10) for creating a carrier frequency signal, means (12, 12a, 12b, 13, 13a, 13b) for generating pulses, means (14, 14a, 4b, 15, 15a, 15b) for generating modulated radar pulses from...  
WO/2002/039548A1
An apparatus and method for determining the angles-of-arrival and the polarization states of incoming RF signals of unknown polarization using five or more independent phase difference measurements using RF antenna elements of differing ...  
WO/2002/035650A1
A method and apparatus for reconfigurably transmitting shaped beam satellite signals via reflector array antennas are disclosed. The apparatus comprises a reflector (406) for reflecting signals having a reflector focal plane (104) and a ...  
WO2001052447A3
A flat-panel repeater includes a housing (50) having a pair of oppositely facing surfaces, at least one antenna element (52, 54) mounted to each of the surfaces for radiating energy in a direction opposite to that of an antenna element m...  
WO2001069798A3  
WO/2002/031915A2
A phased antenna array (20) generates a first field of view (42) and a second field of view (45). First and second motors (26, 29) are coupled to the phased antenna array to rotate the first and second fields of view about first and seco...  
WO/2002/031919A1
The invention relates to an antenna array comprising antenna elements (203) and a support structure (204) to which the antenna elements (203) are attached. Further, the antenna array comprises at least two antenna element groups (200, 20...  
WO/2002/031908A2
An indoor antenna 20 includes a unitary support structure having a plurality of support surfaces 26, 28, 29, 30. At least one antenna element 32, 34, 36, 38 is mounted to each of the support surfaces. The support surfaces 26, 28, 29, 30 ...  
WO2001099240A3
A telecommunications system and method is disclosed for allowing a base station to simultaneously transmit signal in several beams (1, 2, 3, 4) of a multi-beam antenna configuration. Antenna pattern control is maintained by employing ort...  
WO/2002/025775A1
An ultra-wideband, multi-beam adaptive antenna (100) includes a phased array system having an ultra-wideband antenna. The antenna further includes at least two sub-arrays (102L, 102M, 102H) of antenna elements for receiving radio frequen...  
WO/2002/023670A1
A method of forming directional antenna beams, comprising: directing at least two antenna beam signals by means of a beam formation matrix and pre-phasing pre-determined antenna beam signals formed with an antenna array in such a way tha...  
WO2001071849A3
A reconfigurable antenna capable of dynamic reconfigurability of several antenna parameters. Specifically, the present invention is an antenna comprising a plurality of surface PIN devices arranged in a gridlike array. Each of the SPIN d...  
WO2001065642A3
Antennas and multiplexer structures are provided for establishing individual communication links with satellites that are located at geostationary positions in close angular proximity to one another. The antenna includes individual wave-...  
WO2001071843A3
An antenna diversity arrangement (200) comprises a plurality of antennas (204a, 204b) capable of forming a plurality of antenna beams. The amplitude and phase relationships between the signals driving each of the antennas (204a, 204b) ar...  
WO2001071819A3
A surface PIN (SPIN) device and a method of fabricating such a SPIN device. The SPIN device, when activated, confines carrier injection to a small volume near the surface of the device such that the device is sufficiently conductive to s...  
WO/2002/015323A2
A multiple beam array antenna system comprises a plurality of radiating elements provided from stripline-fed open-ended waveguide coupled to a Butler matrix beam forming network. The Butler matrix beam forming network is coupled to a swi...  
WO/2002/014098A2
In accordance with the present invention, an adaptive cruise control system includes a radio frequency (RF) transmit receive (TR) sensor module (or more simply 'sensor') disposed such that a detection zone is deployed in front of a vehic...  
WO/2002/014891A2
A radar detection process includes computing a derivative of an FFT output signal to detect an object within a specified detection zone. In one embodiment, a zero crossing in the second derivative of the FFT output signal indicates the p...  
WO/2002/014898A2
A near object detection (NOD) system includes a plurality of sensors, each of the sensors for providing detection coverage in a predetermined coverage zone and each of the sensors including a transmit antenna for transmitting a first RF ...  
WO/2002/015334A1
A multiple beam array antenna system comprises a plurality of radiating elements (82) provided from stripline-fed open-ended waveguide coupled to a Butler matrix beam forming network (86). The Butler matrix beam forming network is couple...  
WO/2002/014900A2
A video amplifier for a radar receiver includes a temperature compensating attenuator. The attenuator includes a temperature sensitive device, such as a thermistor, arranged in a voltage divider network and is coupled in cascade between ...  
WO/2002/012916A1
A passive MMIC monopluse comparator includes a plurality of lumped element hybrids having pi an T filter structures. In one embodiment, a first hybrid receives first and second downcoverted signals and provides a first output signal to a...  
WO2000060885A9
A high capacity point-to-multipoint two-way wireless communication system. In one example, the system employs a dielectric lens-based sectored antenna at a base station to communicate with remote stationary subscriber stations which are ...  
WO/2002/007332A2
A phased array antenna includes an antenna housing having a subarray assembly that supports beam forming network modules and an array face defining a ground plane substantially orthogonal to the subarray assembly. A plurality of millimet...  
WO/2002/006850A2
A radar system includes a null processor coupled to transmit receive modules. The null processor inserts nulls in the sum pattern at locations for suppressing a jamming source. The null processor determines the difference pattern based u...  
WO/2002/007259A2
A base station clustered adaptive antenna array includes a plurality of clusters of antenna elements. Each cluster is spaced away from an adjacent cluster by a first predetermined spacing related to receive-mode beamforming and includes ...  
WO2001061785A3
An antenna device includes a dual polarized quad-ridge antenna horn an electrically conductive conduit with first and second opposite ends along a horn axis. Four electrically conductive ridges are carried on an inner side of the electri...  
WO/2002/007254A1
An improved antenna comprising at least two individual radiators (1, 2) can be operated in at least two frequency bands (f1, f2, ..., fn). The antenna is improved by the following measures: each output of the individual radiators (1), wh...  
WO2001067555A3
An approach for providing a multiple-beam antenna system for receiving and transmitting electromagnetic signals from a plurality of closely spaced satellites is disclosed. Dielectric inserts (213, 215, 217, 219 and 221) are selectively c...  
WO/2002/005385A1
The invention relates to radio engineering, in particular, to reflector antennas and can be used in systems of communication and satellite television. The tehnical result of the invention is broadening the angle of view. The polyfocal re...  
WO2001043229A3
A system and method for establishing a beam forming phase reference line remote from an antenna system is taught. By providing a phase reference line at a selected position in the signal path the present invention allows for a beam formi...  
WO2001067547A3
A system and method are disclosed for avoiding nulls in a composite radiation pattern synthesized from a plurality of antenna beams. The disclosed invention teaches the use of delays in the signal paths associated with ones of the antenn...  
WO/2002/001753A1
A satellite communication system capable of coexisting with a ground radio system, excellent in wide region property, easiness in circuit setting and wide band characteristics, and capable of intending to perform a large capacity transmi...  
WO/2001/099229A1
The invention concerns an antenna comprising a microwave lens (1), having a first source (S¿1?) located proximate to the lens focus and the second source (S¿2?) located at a distance d from the first source, proximate to the plane perp...  
WO/2001/099240A2
A telecommunications system and method is disclosed for allowing a base station to simultaneously transmit signal in several beams (1, 2, 3, 4) of a multi-beam antenna configuration. Antenna pattern control is maintained by employing ort...  
WO2001018902A3
The invention relates to a housing or a part thereof for a distance sensor, especially for motor vehicles, consisting of at least one housing part (1) wherein at least one body which is transparent to the rays of the sensor and which is ...  
WO/2001/091325A1
The invention relates to a method for controlling the downlink beam in a radio communication system, said radio communication system comprising an antenna system with several antenna elements (AE). The inventive method comprises the foll...  
WO/2001/089030A1
The invention relates to a base station in a mobile communication network, comprising one antenna array, sending signals bearing dedicated as well as broadcast channels into a sector of interest, beamforming means adjusting phase angle a...  
WO/2001/086751A1
When manufacturing waveguides, for example densely located waveguide channels, for electromagnetic waves such as microwaves, the channels are produced from rod-shaped bodies (1) of a material permeable to the waves and non significantly ...  
WO/2001/084881A1
The invention concerns a reception system for a multisensor antenna comprising: at least a set of channel filters ((310 ¿i?)(710¿i?,¿k?) i=1 N) filtering the signals X¿i?(t,f) received by the various sensors of the antenna, said sign...  
WO1999035710A9
A bifocal lens (3a, 3b) for use in a multiple beam antenna system including a reflector (1) that is at least partially parabolic in one dimension and a pair of waveguides (10, 11). Multiple received beams are received and reflected by th...  

Matches 551 - 600 out of 2,848