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5959591 |
Transverse electromagnetic horn antenna with resistively-loaded exterior surfaces
An improved transverse electromagnetic (TEM) horn antenna comprises a resistive loading material on the exterior surfaces of the antenna plates. The resistive loading material attenuates or...
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5959592 |
"IF" bandstacked low noise block converter combined with diplexer
An arrangement is provided for combining the video and audio signals from a satellite antenna with other auxiliary input signals producing a frequency stacked band arrangement for transmission by a...
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5959508 |
Electromagnetic wave combining device and television broadcast transmission system using same
Apparatus is provided for allowing two high frequency signals from two separate sources to be combined for simultaneous propagation through a common propagation medium such as an antenna or...
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5952981 |
Antenna for reducing an effect of a radio wave blocking obstacle
An array antenna is located on an upper surface of a vehicle. The array antenna is oriented at a right angle to a radio wave blocking obstacle existing in a radio wave transmission path. A...
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5953644 |
Microwave transmission system
In a microwave transmission system a microwave signal is transmitted by a transmitter (1) using an antenna (2) to a receiver (4) which employs an antenna (3). The received signal is coupled to a...
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5952984 |
Lens antenna having an improved dielectric lens for reducing disturbances caused by internally reflected waves
A lens antenna is disclosed which comprises a conical horn and a lens attached to an aperture of the horn. The lens has a first planar surface at a first side which faces free space and a...
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5945891 |
Molded waveguide feed and method for manufacturing same
A waveguide feed is fabricated by first creating a lead frame (10) from a piece of conductive material. The lead frame (10) is shaped by bending arms (22) and probe portions (18) on the lead frame...
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5943023 |
Flared trough waveguide antenna
A flared trough waveguide antenna capable of being used at high microwave and millimeter wave frequencies is disclosed herein. The antenna includes a conductive trough having first and second ends,...
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5926146 |
Dual-band feed for microwave reflector antenna
A dual-band feed for use in a microwave reflector antenna. The feed for one band is a an open-ended waveguide or a horn-type feed and the feed for the second band is a helix antenna. The wave-guide...
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5926147 |
Planar antenna design
An antenna design includes a plurality of radiating elements which radiate electro-magnetic energy, and feeders which feed the electromagnetic energy to the radiating elements. The feeders have a...
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5923299 |
High-power shaped-beam, ultra-wideband biconical antenna
A biconical antenna having fully adjustable design parameters. The biconical antenna has a coaxial feed having outer and inner conductors. A lower support structure secures a lower cone to the...
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5907310 |
Device for covering the aperture of an antenna
A device is indicated for covering the aperture of an antenna having a parabolic reflector and an exciter. The cover is made of a rigid material. The cover includes a shield ring connected to the...
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5907309 |
Dielectrically loaded wide band feed
A feed system for an antenna has a set of inner and outer coaxial waveguides which apply, respectively, both higher and lower frequency radiations to a common radiating aperture provided by a horn...
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5905474 |
Feed spoiler for microwave antenna
A microwave antenna feed spoiler for reducing side lobes of a microwave antenna with a feed support. The microwave antenna feed spoiler provides one or more segments of electrically conducting...
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5903241 |
Waveguide horn with restricted-length septums
A waveguide horn has septums to decrease the side lobes in its E-plane radiation pattern and the input ends of the septums are spaced from the horn's rectangular input port to improve the return...
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5898409 |
Broadband antenna element, and array using such elements
A broadband horn-like, linearly polarized antenna element is driven from a microstrip line and a balun. The horn is skeletonized, and has no sides, and consequently operates in TEM mode for broad...
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5894289 |
Portable communication device
A portable communication device which has a horn antenna and a transmitter-receiver and in which the horn antenna can readily be attached to and detached from the transmitter-receiver in a short...
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5889497 |
Ultrawideband transverse electromagnetic mode horn transmitter and antenna
An ultrawideband transverse electromagnetic mode horn antenna for use at high voltages, comprises a pulse generator (1) and two transmission horns (12, 18) containing different dielectric media....
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5889498 |
End-fire array antennas with divergent reflector
An end-fire array antenna achieves improved performance with an array of radiative members that are arranged collinearly between an array first end and an array second end and a divergent reflector...
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5883604 |
Horn antenna
Horn antenna (10) produces an electromagnetic energy field and includes waveguide (12) for generating an electromagnetic field having an electric field (52, 54, 56) and magnetic field (58 and 60)....
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5880698 |
Arrangement for generating and transmitting microwaves, in particular for a filling level measuring device
An arrangement is provided for generating and transmitting microwaves, in particular for a filling level measuring device, which arrangement generates a microwave mode which has a radiation...
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5874923 |
Feeder horn, intended particularly for two-way satellite communications equipment
A feeder horn for two-way satellite telecommunications includes a center transmitter/receiver horn (10) and at least three separate measuring (11, 12, 13) which are positioned symmetrically...
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5870062 |
Microwave antenna feed structure
A feed structure for transmitting or receiving microwave energy to or from a reflector includes a waveguide having an input section, intermediate section, and output section. The waveguide has an...
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5870060 |
Feeder link antenna
A steerable feeder link antenna is formed of a steerable reflector and a stationary feed horn assembly. A novel feed horn assembly allows dual mode transmit and receive functions for circularly...
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5845391 |
Method of making antenna array panel structure
A tapered notch antenna structural panel array that can serve both as a structural member and an antenna is made from an injection molded monolithic three dimensional grid of thermoplastic...
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5844528 |
Satellite feedhorn including a heating assembly
The invention is directed to a heatable feedhorn assembly including a feedhorn having a wide end and a heater assembly wrapped around the wide end. The heater assembly includes an elongate element...
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5841404 |
Electromagnetic wave transmitting and transferring device with high polarization isolation performance
An electromagnetic wave transmitting and transferring device with high polarization isolation performance is provided which comprises a circular waveguide and a rectangular waveguide. The circular...
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5841394 |
Self calibrating radar system
A radar system is described, which includes a built-in calibration/fault detection apparatus that enables rapid and easy calibration of the system. The system includes a long extrusion (70) forming...
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5835062 |
Flat panel-configured electronically steerable phased array antenna having spatially distributed array of fanned dipole sub-arrays controlled by triode-configured field emission control devices
A flat panel-configured electronically steered phased array antenna includes a planar distribution of densely nested microstrip dipole sub-arrays, arranged and controlled in a manner similar to...
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5821906 |
Rear feed source for reflector antenna
A rear feed source for a reflector antenna and an antenna using such a source. The source includes at least one horn connected to a waveguide. The horn has at least two inclined walls forming an...
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5818396 |
Launcher for plural band feed system
A feed system for an antenna has a set of inner and outer coaxial waveguides which apply, respectively, both higher and lower frequency radiations to a common radiating aperture provided by a horn...
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5812096 |
Multiple-satellite receive antenna with siamese feedhorn
A siamese feedhorn for a satellite receiving antenna capable of simultaneously receiving signals from satellites in different geostationary satellite positions. The siamese feedhorn preferably...
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5796371 |
Outdoor converter for receiving satellite broadcast
An outdoor satellite broadcast receiving converter including a waveguide into which a broadcast electric wave enters and in which the broadcast electric wave travels in an axial direction as a...
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5793334 |
Shrouded horn feed assembly
A feed system for an antenna has a set of inner and outer coaxial waveguides which apply, respectively, both higher and lower frequency radiations to a common radiating aperture provided by a horn...
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5793335 |
Plural band feed system
A feed system for an antenna has a set of inner and outer coaxial waveguides which apply, respectively, both higher and lower frequency radiations to a common radiating aperture provided by a horn...
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5784033 |
Plural frequency antenna feed
Apparatus and method for providing an antenna feed (10) operative at different microwave frequency bands employ a circular waveguide (14) interconnecting an orthomode transducer (20) to a feed horn...
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5767815 |
Antenna feedhorn with protective window
A feed structure for an antenna, comprising a feed horn having an input end and an output end, a collar threadably engaged to the output end of the feed horn and a protective window interposed...
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5760749 |
Antenna integral-type transmitter/receiver system
An antenna integral-type transmitter/receiver system to be installed outdoors and used for transmission and reception of radio signals. The object is to provide a small, lightweight antenna...
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5757330 |
Antenna having improved directionality
An antenna for transmitting or receiving electromagnetic radiation along an axis comprises at least three layers 20a, 20b, 20c, 20d and 20e of dielectric material spaced from one another in a...
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5754144 |
Ultra-wideband horn antenna with abrupt radiator
An ultra-wideband horn antenna transmits and receives impulse waveforms for short-range radars and impulse time-of flight systems. The antenna reduces or eliminates various sources of close-in...
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5737698 |
Antenna/amplifier and method for receiving orthogonally-polarized signals
An antenna/amplifier includes a waveguide and an amplifier system. The amplifier and signal lines which terminate in orthogonal probes are carried on a common substrate. The orthogonal probes are...
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5726667 |
Portable communication system
A portable communication device which has a horn antenna and a transmitter-receiver and in which the horn antenna can readily be attached to and detached from the transmitter-receiver in a short...
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5714964 |
Horned interferometer antenna apparatus
A horned interferometer antenna apparatus has parallel plates spaced apart and rigidly connected together by a separator. In the space between the parallel plates is a plurality of antenna...
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5714963 |
Antenna-to-radio quick-connect support device
A connector assembly for connecting a microwave antenna to a radio unit. The connector assembly comprises a central hub including a waveguide and adapts for connection to the antenna for...
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5699072 |
Feed-horn with helical antenna element and converter including the same
The feed-horn with helical antenna element of this invention comprises (1) a waveguide made of conductive cylinder having a step inside, the inner diameter in the vicinity of the opening face of...
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5689275 |
Electromagnetic antenna and transmission line utilizing photonic bandgap material
A photonic bandgap antenna (PBA) (10') utilizes a periodic bandgap material (PBM), which is essentially a dielectric, to transmit, receive, or communicate electromagnetic radiation encoded with...
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5684494 |
Reflector antenna, especially for a communications satellite
The invention provides a reflector antenna, especially for a communications satellite, having at least one fixed main reflector (102) with an essentially circular aperture. A fixed feed system...
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5675348 |
Feedome, primary radiator, and antenna for microwave
A feedome is disposed on the side of an opening of a radiator main body, and comprises a dielectric board having a thickness sufficiently smaller than the wavelength of radio wave, and a dielectric...
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5657033 |
Cofired ceramic notch and horn antennas
A microwave horn antenna structure including a plurality of planar dielectric insulating layers stacked in laminar fashion so as to have a bottom layer and a top layer, respective similarly shaped...
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5642121 |
High-gain, waveguide-fed antenna having controllable higher order mode phasing
A diverging shall antenna fed by a waveguide supplying TE 11 mode is described. A dielectric rod partially contained within the waveguide converts the TE 11 mode to a dominant or HE 11 mode. The...
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