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7564420 |
Hybrid antenna system
A hybrid antenna system for providing a communication service or/and a satellite broadcasting receiving service by coarsely tracking a target satellite in a mechanical fashion and finely tracking...
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7471255 |
Antenna with reduced interference
The present invention relates generally to the field of reflector-type antennas based on the offset Gregorian design having a substantially paraboloidal-shaped primary reflector and a substantially...
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7450079 |
Gimbaled gregorian antenna
In one embodiment, a gimbaled reflector antenna is provided that includes only four reflectors comprising: a first flat plate reflector, a second flat plate reflector, and an ellipsoidal reflector,...
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7446721 |
Satellite tracking antenna system and method therefor
The present invention relates to a satellite tracking antenna system and a satellite tracking method. Step tracking in which the size of a satellite signal sampled in at least one position in which...
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7443355 |
Antenna feed-tube-to-amplifier coupling
A first set of screws secures a Cassegrain-configuration microwave antenna's primary reflector to its low-noise block down-converter without additionally securing that reflector or the low-noise...
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7411561 |
Gimbaled dragonian antenna
In one embodiment, a gimbaled reflector antenna is provided that includes: a Dragonian antenna having a sub-reflector and a main reflector; a feed; a third reflector adapted to reflect a beam from...
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7408522 |
Antenna-feeder device and antenna
An antenna comprises: a main reflector being a body of revolution of parabolic shape; a sub-reflector being a body of the revolution of elliptic shape having a circle and a vertex oriented to the...
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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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7280081 |
Parabolic reflector and antenna incorporating same
A parabolic reflector for an antenna has a plurality of concentric annular sections arranged in series from a first annular section nearest a central axis of the reflector to a last annular section...
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7256749 |
Compact, mechanically scanned cassegrain antenna system and method
A mechanically scanned reflector antenna system that produces a compact swept diameter and overall height, which is ideally suited for use on the external surface of a high speed mobile platform...
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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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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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7187340 |
Simultaneous multi-band ring focus reflector antenna-broadband feed
Compact multi-band antenna system ( 500 ) includes a main reflector ( 502 ) having a shaped surface of revolution about a boresight axis of the antenna operable at a plurality of frequency bands...
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7161549 |
Single-aperture antenna system for producing multiple beams
A novel single-aperture antenna system for producing multiple closely spaced or overlapping beams. The antenna system has multiple feeds for radiating energy, and a hyperboloidal or ellipsoidal...
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7138953 |
Method and apparatus for reducing the effects of collector blockage in a reflector antenna
A method of reducing blockage in a reflector antenna includes disposing a feed mechanism in front of a first reflector and disposing a second reflector in front of the feed mechanism. The second...
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7129903 |
Method and apparatus for mounting a rotating reflector antenna to minimize swept arc
An apparatus and method for forming a cassegrain reflector antenna that allows an extended length feed horn to be employed without increasing an overall depth of the antenna. This enables the swept...
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7109935 |
Combined optical and electromagnetic communication system and method
An antenna system for communicating electromagnetic and optical signals using a common aperture is provided. The system includes at least one optical phased array terminal integrated with an...
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7098859 |
Antenna unit
In a variable power divider including a first 90° phase combiner ( 30 ), a second 90° phase combiner ( 40 ), and a phase-amplitude adjustment block ( 50 ), the phase-amplitude adjustment block (...
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7095380 |
Antenna device
An antenna apparatus in which a combination of rectangular waveguides 9 a and 10 a and a combination of rectangular waveguides 9 b and 10 b are disposed bilateral symmetrically to each...
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7091922 |
Laser alignment apparatus and method
A method for aligning a feed horn in an antenna system ( 100 ) is disclosed. The antenna system ( 100 ) includes at least one reflector surface and one or more feed horns ( 141, 142, . . . 145 )....
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7081863 |
Reflector antenna
A reflector antenna device includes: an auxiliary reflector 1 that receives an electric wave radiated from an opening portion by a primary radiator 3 and reflects the electric wave; and a main...
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7042410 |
Microwave antenna feed with integral bandpass filter
An antenna feed with an integrated bandpass filter is disclosed. The antenna feed contains a reflector and a dipole antenna. A bandpass filter comprising one or more bandpass filter elements is...
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7038632 |
Co-located multi-band antenna
A multi-band reflector antenna having a main reflector, a sub reflector, a first feed and a second feed. The first feed, the sub reflector and the main reflector positioned in a Gregorian optic...
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7023394 |
Cassegrain-type feed for an antenna
A cassegrain-type feed for a parabolic antenna is a dual-band feed and employs a waveguide feeding a dielectric cone feeding a subreflector. The waveguide has an end-portion adjacent a narrow end...
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7015867 |
Illuminating reflector with low-gain propagator
An illuminating-reflector system is provided for transmitting a frequency band in an dispersed beam and a substantially collimated beam. The system includes a secondary reflector configured to...
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7009574 |
Plural-reflector antenna system
In order to lessen the deterioration of the VSWR, a plural-reflector antenna system is provided wherein an appropriately shaped vertex matching plate is disposed on the subreflector and electric...
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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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6995727 |
Reflector antenna feed
An antenna feed comprises, aligned and centered on an axis OO′, a waveguide having an inside diameter, a first end and a second end, a dielectric body having a portion inside the waveguide and a...
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6985120 |
Reflector antenna with injection molded feed assembly
A reflector antenna with a self supported feed assembly that may be formed by injection molding. A waveguide portion of the feed assembly has a dielectric cone at a distal end that supports and...
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6982679 |
Coaxial horn antenna system
An antenna feed system includes a plurality of RF horn antennas ( 201, 202 ) for operating on a plurality of RF frequency bands. A first one of the feed horns ( 202 ) can have a boresight axis and...
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6980170 |
Co-located antenna design
A method and apparatus are provided for transceiving signals. The method includes the steps of providing a secondary reflector within a focal region of a main reflector in a relative spatial...
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6977622 |
Shaped-reflector multibeam antennas
A method, an apparatus, and a computer program product for electromagnetically designing a shaped-reflector multibeam antenna ( 100 ) are disclosed. An initial configuration of the multibeam...
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6972730 |
Antenna system
A feed probe ( 1 ), a semicylindrical sub-reflector ( 2 ) forming a primary radiator together with the feed probe ( 1 ), and a main reflector ( 3 ) arranged such that mirror surfaces of said main...
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6965351 |
Dual-frequency-illuminating reflector
An illuminating reflector system is provided for transmitting first and second frequency bands for satellite and terrestrial communications. The illuminating reflector includes a first reflector...
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6943750 |
Self-pointing antenna scanning
A self-pointing antenna has a reflector, a feed or a sub-reflector and a plurality of support struts coupled between the reflector and the boom arm and supporting the feed or sub-reflector. At...
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6937201 |
Multi-band coaxial ring-focus antenna with co-located subreflectors
A multi-band ring focus antenna system includes a main reflector ( 408 ) that is operable at a plurality spectrally offset frequency bands. A first feed ( 301, 403 ) includes a first feed horn (...
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6933904 |
Antenna apparatus
An antenna apparatus detects a reflected light from a scattered light or from a reflector ( 40 ) mounted in an optical fiber ( 6,6 a -6 d ), measures a strain generated in a primary reflecting...
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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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6924772 |
Tri-mode co-boresighted seeker
A tri-mode co-boresighted seeker including a primary collecting mirror assembly having a parabolic surface and a forwardly located dielectric secondary mirror assembly including a dielectric mirror...
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6919855 |
Tuned perturbation cone feed for reflector antenna
A sub-reflector for a dish reflector antenna with a waveguide supported sub-reflector. The sub-reflector formed from a dielectric block, concentric about a longitudinal axis. The dielectric block...
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6917347 |
Painted broadcast-frequency reflective component
A component that is reflective for broadcast-frequency energy includes a nonmetallic substrate having a substrate surface, and a layered coating overlying and contacting the substrate. The layered...
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6914575 |
Selectable reflector and sub-reflector system using fluidic dielectrics
A selectable sub-reflector antenna system ( 100 ) comprises a main reflector unit ( 101 ), a sub-reflector unit ( 111 ) disposed apart from the main reflector unit and having at least one cavity (...
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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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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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6870512 |
Antenna device for conducting two-axial scanning of an azimuth and elevation
For the purpose of obtaining a mechanical drive reflecting mirror antenna device which is downsized and low in attitude, enables wide-angle scanning, and is high in performance, there are provided...
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6862000 |
Reflector antenna having low-dielectric support tube for sub-reflectors and feeds
An antenna exhibiting improved transmission and reception capabilities. The antenna does not make use of a solid support tube or solid support rods used by previous antennas to support a...
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6861998 |
Transmission/reception sources of electromagnetic waves for multireflector antenna
The present invention relates to an electromagnetic wave transmission/reception source for a multireflector antenna of the Cassegrain type comprising longitudinal-radiation means operating in a...
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6833819 |
Beam steering apparatus for a traveling wave antenna and associated method
Steering of an electromagnetic beam of energy in the upper plate of a plate waveguide of a traveling wave antenna concurrently with the formation of a flat phase front and collimation of the...
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6809695 |
Secondary reflector for SHF antennae of the Cassegrain type
The invention concerns the secondary reflectors of SHF antennae of the Cassegrain type. It consists of providing the secondary basic reflector ( 103 ) of this antenna with a first circular ring (...
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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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