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7619581 |
Parabolic aerial with a conical diffusion disc for fill level radar
Reflections on the aerial system of a fill level radar result in reduced measuring quality at short range. Small echo signals at short range can thus disappear in the noise. According to one...
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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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7492324 |
Method and apparatus for receiving dual band signals from an orbital location using an outdoor unit with a concentric antenna feed
A satellite system 10 having a first satellite 14 at a first orbital slot B has a first transponder 32 and a second generating a first downlink signal 44 B at a first frequency and a second...
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7474254 |
Radar system with agile beam steering deflector
A radar system including a base unit and a radar sensor. The sensor steers a beam in a scanning or tracking manner in both azimuth and elevation. Steering control in azimuth and elevation may be...
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7453411 |
Antenna device and radar apparatus including the same
An antenna device having a primary radiator that includes a transmitting section formed of a cylindrical waveguide extending parallel to a direction in which the front of the antenna device faces...
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7405708 |
Low profiled antenna
An antenna comprises: a main reflector being a body of revolution of arbitrary curve which axis diverges from axis of the revolution; a sub-reflector being a body of the revolution of arbitrary...
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7394436 |
Multi-beam and multi-band antenna system for communication satellites
An antenna system includes a reflector having a modified-paraboloid shape; and a multi-beam, multi-band feed array located at a focal point of the reflector so that the antenna system forms a...
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7362279 |
Method and device for TV receiving and internet transreceiving on a satellite antenna
A device for receiving satellite signals, associated to a parabolic dish ( 2 ) suitable for reflecting to a corresponding focus a first signal ( 25 ) at a first frequency and a second signal ( 35 )...
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7271778 |
Antenna device and radar device using the same
An antenna device having a primary radiator that includes a transmission portion formed of a cylindrical waveguide extending in a direction parallel to the frontward direction of the antenna...
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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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7227501 |
Compensating structures and reflector antenna systems employing the same
A compensating structure includes layers of non-uniform arrays of conductive patches configured to provide phase and/or amplitude distribution modification of feed primary patterns.
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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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7119754 |
Receiving antenna for multibeam coverage
The invention relates to a receiving antenna for satellite telecommunications. More specifically, the invention relates to an active antenna comprising a network of elementary sources which is...
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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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7075492 |
High performance reflector antenna system and feed structure
A reflector-feed assembly for a reflector dish antenna system includes a feeding waveguide and a reflector plate. The feeding waveguide is operable to support the propagation of a signal...
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7053861 |
Taper control of reflectors and sub-reflectors using fluidic dielectrics
A reflector antenna ( 100 ) includes a reflector unit ( 191 ) having at least one cavity ( 192 ) disposed in the reflector unit, at least one fluidic dielectric ( 180 ) having a permittivity and a...
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7002528 |
Circularly polarized receive/transmit elliptic feed horn assembly for satellite communications
The present invention provides a feed horn for use in an antenna assembly having a non-circular reflector. The feed horn is capable of transmitting and receiving circularly polarized signals. The...
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6930653 |
Reflector and sub-reflector adjustment using fluidic dielectrics
A reflector antenna ( 100 ) comprises a reflector unit ( 101 ) having a plurality of cavities ( 106 ), at least one fluidic dielectric having a permittivity and a permeability, and at least one...
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6930648 |
Satellite receiver
In a satellite receiver a feeder element is provided that includes several feeder horns on a microwave head (low noise block downconverter (LNB)) for distributing satellite signals from different...
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6882323 |
Multi-beam antenna system with shaped reflector for generating flat beams
A side-fed dual reflector antenna system ( 10 ) of the present invention overcomes the size cost and complexity limitations associated with conventional single and multiple reflector antenna...
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6879297 |
Dynamically changing operational band of an electromagnetic horn antenna using dielectric loading
The invention concerns a multi-mode electromagnetic horn antenna that can operate over two or more distinct bands of frequencies. The horn ( 100 ) includes a throat portion ( 102 ) and an aperture...
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6876335 |
Arrangement for feeding a centrally focused reflector antenna
An arrangement for feeding a centrally focused reflector antenna includes a waveguide ( 1 ), a dielectric field transformer ( 2 ) arranged on the waveguide ( 1 ) and a mounting platform ( 3 ) for a...
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6873305 |
Taper adjustment on reflector and sub-reflector using fluidic dielectrics
A reflector antenna ( 100 ) includes a reflector unit ( 101 ) having at least one cavity ( 106 ) disposed on the reflector unit, at least one fluidic dielectric having a permittivity and a...
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6844862 |
Wide angle paraconic reflector antenna
A wide-angle reflector antenna that substantially eliminates pattern blockage is provided. The reflector antenna includes a paraconic reflector and a feed supportably located in opposed relation to...
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6801172 |
Optical-RF mixed antenna
A first reflecting device is provided that reflects electromagnetic and optical signals to a common focus point. An electromagnetic receiver is positioned at the focus point to receive the...
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6781555 |
Multi-beam antenna communication system and method
A communication system and method for reconfigurably transmitting and receiving signals via a multi-beam reflector antenna array are disclosed. The multi-beam antenna system comprises a plurality...
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6771225 |
Low cost high performance antenna for use in interactive satellite terminals
The invention relates to a Interactive Satellite Terminal antenna system comprising an antenna to which is associated a feed horn. This antenna systems characterized in that it comprises an...
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6750827 |
Dielectric waveguide antenna with improved input wave coupler
An improved millimeter wavelength antenna assembly having an input signal coupler, a dielectric waveguide, and a rotatable drum is disclosed. The input signal coupler reduces VSWR return losses and...
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6747608 |
High performance multi-band frequency selective reflector with equal beam coverage
A high performance multi-band antenna reflector having low sidelobe and cross polarization levels, and a superior carrier-to-interference ratio has two concentric zones ( 12, 14 in a first...
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6738650 |
Radiation shielding tri-band antenna adapted to provide dual band polarizations
A radiation shielding apparatus for a wireless communication device operable in at least two cellular frequency spectrums includes a multi-band antenna operably associated with an electromagnetic...
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6724349 |
Splashplate antenna system with improved waveguide and splashplate (sub-reflector) designs
A splashplate antenna system configured using hybrid mode-matching techniques has improved secondary beam characteristics, including improved sidelobe performance, improved electric and magnetic...
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6717552 |
Communications antenna system and mobile transmit and receive reflector antenna
A reflector antenna adapted for use with a mobile platform, in particular with an aircraft. The reflector antenna includes an antenna aperture, a first signal processing subsystem located closely...
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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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6661384 |
Mirror surface accuracy measuring device and mirror surface control system of reflector antenna
Radiation field distributions of all mirror panels composing a main reflector are measured and held in advance, radiation field distributions of a reflector antenna having the main reflector are...
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6657589 |
Easy set-up, low profile, vehicle mounted, in-motion tracking, satellite antenna
A low profile, vehicle mounted, in-motion tracking, satellite antenna includes a pair of antenna assemblies mounted in parallel on a rotatable platform. Each antenna assembly includes two...
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6642905 |
Thermal-locate 5W(V) and 5W(H) SSPA's on back of reflector(s)
A microwave antenna for an aircraft including a reflector element with a front surface and a rear surface. A horn is mounted to the front surface of the reflector element and an orthomode...
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6633264 |
Earth coverage reflector antenna for geosynchronous spacecraft
A reflector antenna for use on a geosynchronous spacecraft or satellite for providing Earth coverage has a gain or directivity which is two or three dB greater at the edges than at the beam center,...
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6621461 |
Gridded reflector antenna
A method for broadcasting, a signal, and an antenna system are disclosed. The antenna system comprises a feed horn and a reflector. The feed horn provides a radio frequency (RF) signal. The...
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6573873 |
Stepped horn with dielectric loading
A horn for direct radiation or for use as a reflector feed is for operation at disparate frequencies. The horn has a conventionally LSE 1,0 distribution at the lower of the two frequencies, and...
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6559807 |
Compact, lightweight, steerable, high-power microwave antenna
A compact, lightweight, steerable, high-power, microwave weapon including a self-powered, steerable vehicle having at least one exterior antenna support surface, a self-powered, microwave radiation...
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6496156 |
Antenna feed having centerline conductor
An antenna feed horn assembly includes a circular feed horn having an electrically conductive wall with an edge defining a circular aperture. The antenna feed horn assembly further includes a...
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6483475 |
Block-down-converter and multi-beam-antenna
A multi-beam antenna includes a parabolic reflector, a block-down-converter, a support arm and a holding member. The block-down-converter is arranged such that a multi-primary radiator and a...
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6480165 |
Multibeam antenna for establishing individual communication links with satellites positioned in close angular proximity to each other
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...
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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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6445360 |
Antenna structure for fixed wireless system
The invention involves a novel mechanical assembly incorporating, in a preferred embodiment, a technically advanced Cassegrain antenna design. The antenna achieves, in experiments, near theoretical...
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6441797 |
Aggregated distribution of multiple satellite transponder signals from a satellite dish antenna
An Out Door Unit (ODU) provides the capability to aggregate signals received from more than one satellite before providing the signals to a multi-switch for selection 0by an integrated...
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6424892 |
Vehicle surroundings monitoring device
A vehicle surroundings monitoring device in which reflection by a mirror is reduced to ensure the desired performance of distance measurement even in a short-distance range. The monitoring device...
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6424312 |
Radiating source for a transmit and receive antenna intended to be installed on board a satellite
The invention relates to a radiating source for transmitting and receiving, intended to be installed on board a satellite to define a radiation pattern in a terrestrial zone, said source being...
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6417815 |
Antennas and feed support structures having wave-guides configured to position the electronics of the antenna in a compact form
The present invention provides various wave-guides and support structures that are used in conjunction with feed structures to form compact antennas. Specifically, in one embodiment, the present...
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6388637 |
Wide band, wide scan antenna for space borne applications
A plurality of paraboloidal reflector cells are mounted side by side in a concave spherical array in the interior of a toroidal support structure. Groups of adjoining reflector cells are selected...
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