|
Match
|
Document |
Document Title |
|
|
4811026 |
Mobile satellite receiving antenna especially for recreation vehicle
A satellite transmission receiving antenna with unique mounting provisions for a recreational vehicle roof. A generally cylindrical collar extends upward from the vehicle roof and attaches to a...
|
|
|
4806945 |
Receiving head end for polarized microwaves, parabolic aerial and receiving station equipped with such a receiving head end
A receiving head end comprising only a single movable component, a front depolarizer (POM), for selecting conjugate polarized microwaves. The addition of a fixed depolarizer (POF) provides two...
|
|
|
4804971 |
Guy system for parabolic reflecting antenna
A guy system is disclosed for a parabolic reflecting antenna having a reflecting surface and a signal receiver or feedhorn mounted at its focal point. A plurality of stays or guy wires is secured...
|
|
|
4804972 |
Monocoque antenna structure
An enclosed terrestrial antenna system of monocoque construction for receiving television signals from satellites in geostationary orbit. The basic antenna comprises two dish-shaped members having...
|
|
|
4801946 |
Grid antenna
A grid parabolic antenna formed of a peripheral hoop and a plurality of metallic reflector ribs arranged in planes substantially parallel to each other and connected to the hoop. The reflector ribs...
|
|
|
4797685 |
Offset shaped antenna reflector
An antenna fabrication scheme for shaped reflector analyzes the geometry of the shaped reflector to be fabricated. On the basis of this analysis, a surface of revolution which closely approximates...
|
|
|
4792812 |
Microwave earth station with embedded receiver/transmitter and reflector
A low-cost, essentially self-contained microwave earth station having a reflector dish together with the microwave sensing/emitting elements embedded in a rigid, low density and low thermal...
|
|
|
4788555 |
Combined solar and signal receptor device
A parabolic reflector for combined use as a solar concentrator and communications antenna having both a shared and joint use mode. In both the joint and shared use mode, the dish concentrates the...
|
|
|
4780726 |
Depolyable reflector
An improved hydraulic reflector is provided for use as an antenna or solar reflector or the like, wherein the reflector is collapsible for highly compact stowage within a space vehicle and for...
|
|
|
4766443 |
Satellite dish antenna apparatus
A satellite dish antenna having parabolic-shaped support ribs firmly engaging the sides of adjacent screen-mesh reflected petals along the entire longitudinal length of each petal. Each support rib...
|
|
|
4761655 |
Transportable antenna for an earth station
The antenna (e.g., a transportable, lightweight and cheap antenna for temporary earth stations) is constructed out of three components. The center component is a circular/parabolic dish. The side...
|
|
|
4757323 |
Crossed polarization same-zone two-frequency antenna for telecommunications satellites
The antenna comprises a parabolic reflector (1) and a primary source (2). The reflector (1) comprises a first grating of conductor wires (7) and a second grating of conductor wires (8) which are...
|
|
|
4744644 |
Membrane concentrator mirror
A membrane concentrator mirror comprises a rigid, circular-segment-shaped frame-like basic body with a hermetically closed bottom wall, the basic body having a union device for connection with a...
|
|
|
4742359 |
Antenna system
A parabolic antenna for SHF band having a primary feeder and a reflector is improved by using a backfire helical antenna as a primary feeder, which is fed by using a coaxial cable. The backfire...
|
|
|
4725847 |
Reflector antenna having sidelobe nulling assembly with metallic gratings
A reflector antenna having an adaptive nulling assembly. The assembly comprises a disk shaped mounting plate having a shaft aligned with the rotational axis thereof and passing through the main...
|
|
|
4712110 |
Five-port monopulse antenna feed structure with one dedicated transmit port
An antenna feed structure for use with a parabolic reflector in amplitude-comparison monopulse radar applications employs a dedicated transmit feed centered within a four-port receive array of...
|
|
|
4712111 |
Antenna system
An antenna system includes a reflector which is a part of a paraboloid of revolution or parabolic cylinder, a primary radiator for clockwise circularly polarized wave, and a primary radiator for...
|
|
|
4710777 |
Dish antenna structure
A dish antenna structure (10) is formed from a plurality of ribs (14) which extend from near the center of the dish to its periphery, and which support antenna panels (18) between them. Each rib...
|
|
|
4689633 |
Flared microwave feed horns and waveguide transitions
An overmoded waveguide transition comprises a flared waveguide section having different transverse cross-sections at opposite ends thereof, the longitudinal shape of a section of the transition...
|
|
|
4689634 |
Mount for feedhorn/LNA assembly
A mount for supporting a feedhorn/LNA assembly in a parabolic satellite antenna is disclosed, said mount providing a sturdy support for positioning the feedhorn/LNA assembly at the focal point of...
|
|
|
4689637 |
Parabola antenna having increased mechanical strength
A parabola antenna has a parabola surface whose thickness is uniformly decreased from an outer circumferential portion to a central portion of the parabola surface. The thickness of the parabola...
|
|
|
4673945 |
Backfire antenna feeding
A backfire feed antenna has a parabolic reflector with a ring-focus at the reflector focal point comprising a dielectric waveguide having a stem portion and a cap portion with a pointed end and...
|
|
|
4672387 |
Antenna systems for omnidirectional pattern
An antenna system which has omnidirectional coverage in azimuth and sectoral coverage in elevation. A main reflector including a reflecting surface has polar symmetry about the Z-axis. It also has...
|
|
|
4663633 |
Vehicle mounted satellite antenna system
A satellite antenna particularly adapted for use on a recreational vehicle such as a house trailer or mobile home, having a roof surface, the antenna including a base plate mounted on the vehicle...
|
|
|
4658258 |
Taperd horn antenna with annular choke channel
A low cost tapered horn with desirable equal E and H plane pattern beamwidths is achieved with one or more annular channels in the tapered wave translation surfaces of the horn. These channels...
|
|
|
4656484 |
Radar reflector and scanner with electromagnetic programmable drive
Elements of a radar antenna are provided with one or more electromagnetic actuators capable of moving the elements (scanner or parabolic reflector), independently of the support system in response...
|
|
|
4647943 |
Mesh dish antenna and hub
The ribs of a mesh-type parabolic antenna or the like are clamped in a radial arrangement between the side walls of adjacent wedges in a hub. The hub includes a plate with a flange extending from...
|
|
|
4647938 |
Double grid reflector antenna
A double grid reflector antenna for radiating different signals having pure linear orthogonal polarization comprises a couple of identical and superposed reflecting grids. One of said grids has...
|
|
|
4639734 |
Support structure for paraboloid reflector
Support structure for a paraboloid reflector of electromagnetic radiation. The structure comprises a plurality of abutting flat ribs arranged on edge in rotated concentric square patterns, with the...
|
|
|
4638322 |
Multiple feed antenna
The multiple feed antenna comprises a primary focussing element and at least two feeds. The feeds are spaced from each other and have different characteristics such as different frequency bands....
|
|
|
4631547 |
Reflector antenna having sidelobe suppression elements
Suppression of selected sidelobes in a reflector antenna is accomplished by the positioning of two or more metallic disks on the reflector surface at specific distances above the reflector surface.
|
|
|
4630061 |
Antenna with unbalanced feed
In general a coaxial feeder connected directly into the center of a half-wave dipole antenna disturbs electrical balance and therefore reduces the effectiveness of the screen of the feeder. In the...
|
|
|
4618866 |
Dual reflector antenna system
An antenna system in which primary radiators are disposed on the radiation side of beams from a main reflector and in opposition to a subreflector and in which the subreflector and the primary...
|
|
|
4618867 |
Scanning beam antenna with linear array feed
The present invention relates to a scanning beam antenna comprising a doubly-curved main reflector, a doubly-curved subreflector and at least one linear array feed. The main reflector is...
|
|
|
4608571 |
Collapsible parabolic reflector
A portable, lightweight, folding parabolic reflector antenna for reception of microwave signals includes an axial wave guide tube which constitutes the main structural supporting member of the...
|
|
|
4607260 |
Asymmetrically configured horn antenna
The present invention relates to a horn antenna which provides minimized cross-polarization in the far field of the antenna. The antenna arrangement comprises a horn including four walls wherein a...
|
|
|
4596047 |
Satellite broadcasting receiver including a parabolic antenna with a feed waveguide having a microstrip down converter circuit
A compact satellite broadcasting receiver comprises a circular waveguide, a strip-line-shaped probe projected into the circular waveguide, a reflecting element provided downstream of the probe in...
|
|
|
4590481 |
Focal finder for parabolic reflector antenna
A compact, easily manipulable measuring device is provided, particularly useful for properly positioning the feed horn of a parabolic reflector antenna, or the like, relative to the satellite...
|
|
|
4585317 |
Reflector with attenuating connecting plates
A reflector and method for making the same involves joining a set of curved reflective segments together to form a concave reflector having a focal point common to all of the segments. Each segment...
|
|
|
4584588 |
Antenna with feed horn and polarization feed
A polarization feed is provided for use in a directional antenna under separation of two linearly polarized electromagnetic waves whereby the feed is basically comprised of a tube, one end of which...
|
|
|
4578681 |
Method and apparatus for optimizing feedhorn performance
An optimized feedhorn comprising a circular waveguide having a corrugated plate disposed around the outside of the aperture of the waveguide wherein the corrugations of the plate are capacitive as...
|
|
|
4575726 |
Antenna construction including two superimposed polarized parabolic reflectors
A compact frequency reuse communications antenna includes two superimposed structures, each including Kevlar honeycomb, fabric face skins on the honeycomb, and a reflector over one of the face...
|
|
|
4571594 |
Directional antenna system having sidelobe suppression
An electrostatically figured directional antenna array for deployment in outer space having means for suppressing sidelobe responses. A portion of the reflector surface symmetric about its center...
|
|
|
4571591 |
Three dimensional, orthogonal delay line bootlace lens antenna
A bootlace microwave lens antenna has orthogonal delay lines for reducing adratic phase errors to improve focusing capability. The collector and radiator elements consist of mutually orthogonal...
|
|
|
4565346 |
Adjustable bracket mount
An adjustable bracket mount for mounting certain functional components such as a feed horn and a low noise amplifier on a satellite antenna dish at the prime focus or other desired location above...
|
|
|
4554552 |
Antenna feed system with closely coupled amplifier
A compact antenna feed system for orthogonally polarized RF signals includes a waveguide feed having orthogonally disposed internal ridges, a pair of wave detectors coupled to the waveguide feed to...
|
|
|
4544928 |
Multifrequency reflector antenna
A multifrequency antenna includes a main reflector for signals in a low frequency band. One or more portions of the main reflector are deformed to provide one or more auxiliary reflectors for...
|
|
|
4538175 |
Receive only earth satellite ground station
A receive only, low cost, small size, frequency agile earth satellite ground station has the low noise amplifier, frequency agile receiver, head end modulator, motor control circuit and optional...
|
|
|
4528569 |
Earth station antenna assembled on site
Earth station antenna and method for assembly wherein the antenna has a frame made up of accurately stamped radial ribs and circularly disposed cross members, the frame being filled in by either...
|
|
|
4527166 |
Lightweight folding parabolic reflector and antenna system
A portable lightweight folding parabolic reflector antenna for reception of microwave signals includes an axial waveguide tube which constitutes the main structural supporting member of the...
|