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7561113 |
Antenna system for level measurement with radar level measurement devices
The invention concerns an antenna system for level measurement with a level measurement device with a wave guide ( 5 ) that runs axially and that either has on its rear side an arrangement ( 4 )...
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7548215 |
Multi-beam-reflector dish antenna system and method for production thereof
A multi-beam-reflector dish antenna system and a method for production thereof are disclosed. Signals from different satellites are simultaneously received using a single compound LNBF module. The...
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7522116 |
Multibeam antenna
An antenna capable of generating multiple beams that are close together and have side lobes of low level includes optics comprising a single main reflector and a set of primary sources, each source...
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7522115 |
Satellite ground station antenna with wide field of view and nulling pattern using surface waveguide antennas
The present invention is applicable to satellite ground station antennas having a wide field of view in comparison to the satellites with which the antenna connects. One embodiment includes a...
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7463207 |
High-efficiency horns for an antenna system
A multiple-beam antenna system includes at least one reflector and a cluster of horns for feeding the reflector. A horn of the cluster of horns is configured for providing transmission and...
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7388557 |
Antenna which is made from a photonic band gap (PBG) material and which comprises a lateral wall surrounding an axis
A antenna made from a photonic band-gap (PBG) material, includes: a lateral wall ( 4 ) which is made from a PBG material and which completely surrounds a central axis ( 6 ), the wall being disposed...
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7375698 |
Hydrophobic feed window
A feed window for a low noise block converter feedhorn incorporated into a microwave-range antenna assembly is formed from a thermoplastic polymer composition containing a hydroscopic-effective...
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7324057 |
Low wind load parabolic dish antenna fed by crosspolarized printed dipoles
The present invention provides a parabolic dish reflector antenna for wireless communications that is dually polarized for diversity reception purposes while causing minimal visual disturbance for...
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7286096 |
Aligned duplex antennae with high isolation
Integrating dual antennae into a single rigid assembly guarantees parallel alignment between the antennae and provides higher isolation with lower insertion loss than duplexing methods can achieve...
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7245265 |
Parabolic antenna of a level measuring instrument and level measuring instrument with a parabolic antenna
This invention concerns a parabolic antenna with a parabolic reflector ( 2 ) having a parabolic reflector rim ( 20 ), a collar ( 9 ), which is positioned on the parabolic reflector ( 2 ), in...
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7242360 |
High power dual band high gain antenna system and method of making the same
A high power dual band high gain antenna system is provided. The antenna system employs one or more feedhorn clusters to distribute power associated with the transmission of high power signals. A...
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7205951 |
Multibeam feedhorn, feed apparatus, and multibeam antenna
A multibeam primary radiator apparatus ( 2 ) includes first, second and third primary horns ( 16, 18, 20 ). The first primary horn ( 16 ) has a generally circular proximal end aperture ( 22 ) at...
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7205949 |
Dual reflector antenna and associated methods
An antenna system includes an antenna feed aligned with a subreflector and a main reflector. The subreflector has a concave surface defining a vertex. A main reflector having a concave surface is...
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7202833 |
Tri-head KaKuKa feed for single-offset dish antenna
A method and apparatus for receiving signals transmitted from a plurality of communications satellites. An apparatus in accordance with the present invention comprises a reflecting surface having a...
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7183990 |
Aperture illumination control membrane
A device for modifying electromagnetic illumination of a reflector aperture defined by a reflector surface is mounted in front of the reflector aperture in a spaced apart relationship relative to...
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7167138 |
Triple-band offset hybrid antenna using shaped reflector
A triple-band offset hybrid antenna having a shaped reflector is disclosed. The triple-band offset hybrid antenna includes: a shaped reflector reflecting a K/Ku bands RF signals received from a...
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7075495 |
Offset hybrid antenna using focuser
A Ka-band offset hybrid antenna having a shaped focuser is disclosed. The Ka-band offset hybrid antenna having a shaped focuser, including: a shaped focuser for reflecting a received plane wave to...
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7030832 |
Multi-beam-reflector dish antenna and method for production thereof
A multi-beam-reflector dish antenna system. Signals from different satellites are simultaneously received using a single compound LNBF module. The antenna dish includes a reflector with N-th order...
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7006049 |
Dual reflector system and method for synthesizing same
In one embodiment of the present invention, an offset folded reflector pair is optimized for scanning off boresight by enforcing the Abbe Sine condition using a least-error approximation. Coma and...
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6987489 |
Electronically scanning direction finding antenna system
An electronic scanning radio direction finding system for accurate direction finding of radio frequency signals using singly or doubly flared cylindrical reflectors surrounded by a circular array...
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6933903 |
Receiving signals from plural satellites in one antenna
A device for receiving/transmitting electromagnetic signals from/to at least two satellites fixedly located at points at the geostationary path comprises an antenna, for example a lens ( 1 ) of...
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6911953 |
Multi-band ring focus antenna system with co-located main reflectors
A compact multi-band ring-focus antenna system. The antenna system includes a first and a second main reflector 304, 306, each having a shaped surface of revolution about a common boresight axis...
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6803883 |
Radio frequency electromagnetic emissions shield
A shield for shielding radio frequency emissions being emitted from a communications antenna. The shield has a first layer of material having the physical property of generally absorbing radio...
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6762683 |
Tag device
A tag device is described for receiving, processing and/or transmitting data signals using an integrated electronic data-processing circuit formed in an essentially plane substrate body and at...
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6741218 |
Multibeam antenna system
A multi-beam antenna system including a parabolic reflector with a parallelogram perimeter, which is illuminated by a plurality of feed elements. The parabolic reflector reflects a first beam...
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6664933 |
Multi-feed reflector antenna
An antenna includes a reflector having a first axis, a second axis, a focal zone that is about parallel to the first axis, and a focal point located within the focal zone. A transmit feed is...
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6542118 |
Antenna apparatus including compound curve antenna structure and feed array
An antenna apparatus that includes a beam control system and a beam collimating system having a compound curve antenna structure is provided. The compound curve antenna structure can be...
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6492954 |
Multi-wave-reflector antenna dish
A multi-wave-reflector antenna dish simultaneously receives signals from different satellites. The antenna dish comprises a reflector with a superquadric projected aperture and a plurality of LNBF...
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6463282 |
Non-uniform multi-beam satellite communications system and method
A satellite broadcast system and method, particularly useful for television signals, allows for local as well as nationwide broadcast service by allocating greater satellite resources to the more...
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6456252 |
Phase-only reconfigurable multi-feed reflector antenna for shaped beams
A method and apparatus for reconfigurably transmitting shaped beam satellite signals via reflector array antennas are disclosed. The apparatus comprises a reflector for reflecting RF signals having...
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6424310 |
Compact folded optics antenna system for providing adjacent, high gain antenna beams
An antenna system comprising a feed array, a subreflector and a main reflector which are oriented to define a folded optics antenna geometry. The feed array is comprised of a plurality of separate...
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6392611 |
Array fed multiple beam array reflector antenna systems and method
Array fed multiple beam antenna systems and methods for use on an orbiting spacecraft carrying a communication system. The antenna systems include a reflector and a relatively small array feed...
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6366256 |
Multi-beam reflector antenna system with a simple beamforming network
An antenna system and method for generating a desired contiguous spot beam pattern, and a signal is disclosed. The contiguous spot beam generating antenna system comprises a reflector system...
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6344832 |
Frequency converter arrangement for parabolic antennae
The invention concerns a frequency converter arrangement for parabolic antennae receiving vertical and horizontal linear polarization signals, transmitted by two geostationary satellites not far...
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6252508 |
Radio frequency identification tag arranged for magnetically storing tag state information
A radio frequency identification tag system (10) utilizes a radio frequency identification tag (16) that includes stored tag information. The tag includes an antenna element (30) and a common...
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6236375 |
Compact offset gregorian antenna system for providing adjacent, high gain, antenna beams
An antenna system comprising a feed array, a subreflector and a main reflector which are oriented to define a offset gregorian antenna geometry. The feed array is comprised of a plurality of...
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6225955 |
Dual-mode, common-aperture antenna system
A multi-mode, common-aperture antenna system capable of simultaneously transmitting and/or receiving electromagnetic radiation in at least two frequency bands. The antenna system includes a first...
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6219003 |
Resistive taper for dense packed feeds for cellular spot beam satellite coverage
Providing a tapered surface reflectivity to the reflecting surface of the parabolic reflector in a parabolic antenna using resistive material reduces side lobes and produces steeper roll off in the...
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6215452 |
Compact front-fed dual reflector antenna system for providing adjacent, high gain antenna beams
An antenna system comprising a feed array, a subreflector and a main reflector which are oriented to define a front-fed dual reflector antenna geometry. The feed array is comprised of a plurality...
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6211835 |
Compact side-fed dual reflector antenna system for providing adjacent, high gain antenna beams
An antenna system comprising a feed array, a subreflector and a main reflector which are oriented to define a side-fed dual reflector antenna geometry. The feed array is comprised of a plurality of...
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6208312 |
Multi-feed multi-band antenna
A multi-feed, multi-band antenna includes a parabolic dish reflector, a plurality of four-port feeds, and may also include one or more orthomode two-port feeds. Each four-port feed is constructed...
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6195061 |
Miniature skewed beam horn antenna
A miniature horn antenna includes a housing forming a skewed beam sectoral horn, the housing forming first and second divergent walls having a primary axis in which at least one of the first and...
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6160520 |
Distributed bifocal abbe-sine for wide-angle multi-beam and scanning antenna system
A multiple beam antenna system including a reflector that is at least partially parabolic in one dimension, a pair of dielectric lenses (or optionally at least one shaped reflector to perform...
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6154174 |
Large aperture vibration compensated millimeter wave sensor
A millimeter wave imaging system includes a plurality of millimeter wave radiometer elements disposed in a sparse antenna array integrated into a lower surface of an airborne vehicle. The antenna...
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6150990 |
Method for reducing cross-polar degradation in multi-feed dual offset reflector antennas
A unique feed structure for improving the cross-polarization performance of a reflector antenna system is disclosed. According to the present invention, the feed structure is an array including a...
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6137451 |
Multiple beam by shaped reflector antenna
An antenna system has a reflector illuminated by a primary feed for producing a primary beam. The reflector is illuminated further by a secondary feed formed of an array of secondary feed elements...
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6031507 |
Antenna apparatus
To obtain a high-performance antenna apparatus free from the shift of its focusing point, there are provided a plurality of pairs of horns, horns of each pair are arranged at opposite positions...
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6023248 |
Multiplexed channel beam forming unit
A unit for combining N channel signals produced by N respective separate sources, where N is an integer, comprises a collector array receiving the N channel signals in respective directions defined...
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5995056 |
Wide band tem fed phased array reflector antenna
A wide band phased array antenna includes a radio frequency reflector hav a focal axis, and first and second sides and an m number of transverse electromagnetic transmission carriers, where each of...
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5963175 |
One dimensional interleaved multi-beam antenna
An efficient multi-beam antenna system for use with a high capacity communications satellite or spacecraft that maximizes frequency re-use of the allocated frequency spectrum. The antenna system...
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