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7583238 |
Radome for endfire antenna arrays
The present invention provides a radome for an endfire antenna array that includes a honeycomb core, an inner skin attached to the honeycomb core, a first set of conductive slats disposed on the...
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7580004 |
System and method for position or range estimation, tracking and selective interrogation and communication
An antenna mountable on a weapons platform, a communication system and methods of estimating position or range and conducting directional communication. In one embodiment, the antenna includes: (1)...
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7579596 |
Millimetre and sub-millimetre imaging device
The terahertz camera has a fixed objective lens ( 2 ) and a plurality of detectors ( 3 ) positioned at the focal plane of the objective lens ( 2 ). Each of the detectors ( 3 ) is mounted on a...
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7570221 |
Reduced beamwidth antenna
Systems and methods for reducing the beamwidth of an antenna system are provided. An evanescent field generator generates an evanescent field representing a far field radio frequency (RF) signal...
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7539458 |
Apparatus and method for a system architecture for multiple antenna wireless communication systems using round robin channel estimation and transmit beam forming algorithms
A multiple antenna wireless system including a transmitter and a receiver comprises a reconfigurable large antenna array having a plurality of antennas. A plurality of RF chains in the transmitter...
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7456803 |
Large aperture rectenna based on planar lens structures
A rectenna structure comprising a flexible, dielectric sheet of material; a plurality of metallic lenslets disposed on the sheet of material; and a plurality of diodes disposed on the sheet of...
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7420525 |
Multi-beam antenna with shared dielectric lens
An integrated multi-beam antenna with a shared dielectric lens is disclosed. The antenna is formed by positioning the feed apertures of a plurality of waveguide feeds at positions located on the...
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7400304 |
Antenna with partially spherical dielectric lenses
An antenna is provided comprising a first group of part-spherical dielectric lenses supported on a first portion of a conducting ground place arranged to reflect signals emerging from the lens,...
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7375696 |
Electromagnetic wave transmitting/receiving device
A direction-change element for changing the direction of travel of an incident electromagnetic wave and electromagnetic wave transmitting/receiving elements are disposed on a substrate. The...
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7345652 |
Antenna system and RF signal interference abatement method
Disclosed is an antenna system including a Luneberg Lens having a spherically shaped outer surface and a spherically shaped focal surface spaced from its outer surface with a plurality of patch...
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7339521 |
Analytical instruments using a pseudorandom array of sources, such as a micro-machined mass spectrometer or monochromator
Novel methods and structures are disclosed herein which employ pseudorandom sequences to spatially arrange multiple sources in a pseudorandom source array. The pseudorandom source array can replace...
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7336232 |
Dual band space-fed array
A dual-band, space fed antenna array includes a feed array with a first set of feed radiators for operation in a first frequency band of operation and a second set of feed radiators for operation...
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7330161 |
Antenna, radio device, method of designing antenna, and method of measuring operating frequency of antenna
An antenna comprises a first conductive layer, a second conductive layer and an LC resonance circuit. The first conductive layer has plural elements and is disposed adjacently to each other. The...
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7301504 |
Mechanical scanning feed assembly for a spherical lens antenna
The invention includes a mechanical scanning feed and a spherical lens antenna system. The mechanical feed includes a waveguide, which has a movable wall assembly that contains a guide slot. The...
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7283102 |
Radial constrained lens
The invention provides apparatuses for a radial constrained lens in a steerable directional antenna system. The radial constrained lens includes a feed array that excites a continuous radiating...
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7259723 |
Device for emitting and receiving electromagnetic radiation
A device for transmitting and receiving electromagnetic radiation includes separate antennas for transmitting and for receiving electromagnetic radiation and in which the lobes of the transmitting...
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7253789 |
Dielectric resonator antenna
There is disclosed a dielectric resonator antenna adapted to resonate in an EH 11δ resonance mode, and also a method for the manufacture thereof. The desired resonance mode is achieved by careful...
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7253781 |
Antenna device radio unit and radar
A resonance element array 200 is disposed between a primary radiator 1 and a lens 3 . In the resonance element array 200 , resonance elements of linear conductors and variable reactance...
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7221328 |
Radiowave lens antenna device
Lens antenna equipment including a hemispherical Luneberg lens made of dielectric, a reflector which has a size larger than the lens diameter and which is to be provided on a face equivalent to a...
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7218285 |
Metamaterial scanning lens antenna systems and methods
The present invention is directed to systems and methods for radiating radar signals, communication signals, or other similar signals. In one embodiment, a system includes a controller that...
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7212169 |
Lens antenna apparatus
In a lens antenna apparatus, a guide rail is formed along the outer surface of a hemispherical lens of a hemispherical lens antenna, and a plurality of radiators are positioned and fixed on the...
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7205948 |
Variable inclination array antenna
An antenna array includes an upper conductive plate structure comprising a lattice array of holes to form a radiating aperture. A lower conductive plate structure is disposed in a spaced...
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7190324 |
Low-profile lens antenna
This invention relates to a low-profile lens antenna. In particular, this invention relates to a low-profile lens antenna for use in a depression in a surface, e.g. a concavity in the ground. A...
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7180468 |
Object detecting device
To provide an object detecting device having a capability of sufficiently adjusting the detection areas to suit to the environment in which it is installed, the object detecting device includes an...
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7180456 |
Antennas supporting high density of wireless users in specific directions
A low cost antenna in a base station suitable for deployment where high density of wireless users are present in specific directions (e.g., cross roads in urban areas). A lens is used associated...
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7154451 |
Large aperture rectenna based on planar lens structures
A rectenna structure comprising a flexible, dielectric sheet of material; a plurality of metallic lenslets disposed on the sheet of material; and a plurality of diodes disposed on the sheet of...
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7142164 |
Low-loss reconfigurable reflector array antenna
A reflector array antenna is divided into independent subarrays each comprising at least two radiating elements adapted firstly to collect signals delivered by a source and having at least one...
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7133810 |
Designs for wide band antennas with parasitic elements and a method to optimize their design using a genetic algorithm and fast integral equation technique
A method for applying an algorithm to facilitate the design of wideband omnidirectional antennas, and the design of sleeve cage monopole and sleeve helix units includes rapid resolution of a...
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7123941 |
Radio LAN master station system
A radio LAN master station system which provides long distance communication and suffers from small interference by another system located inside and/or outside of a service area comprises a...
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7119758 |
High frequency, multiple beam antenna system
The high frequency, multiple beam antenna system comprises a focusing device having a profile of revolution created by the cross section of a dielectric lens rotating about an axis located in its...
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7075496 |
Fan-beam antenna
An object of the invention is to provide a fan-beam antenna which comprises a flare which is long in a horizontal direction thereof and whose cross section is horn-shaped, and a water-proof box...
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7061448 |
Radio wave lens antenna apparatus
A small, lightweight radio wave lens antenna device is proposed in which freedom of selection of the installation place is high, which can be compactly installed e.g. on a wall surface, and in...
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7061447 |
Reconfigurable antennas using microelectromechanical (MEMs) shutters and methods to utilize such
A reconfigurable antenna is presented that uses MEMs shutters to reconfigure a Fresnel zone plate antenna. It can be used to either point a main beam in different directions or to point multiple...
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7009570 |
Phased array antenna absorber and associated methods
A phased array antenna includes a substrate, and an array of dipole antenna elements are on the substrate. Each dipole antenna element includes a medial feed portion, and a pair of legs extending...
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6999044 |
Reflector antenna system including a phased array antenna operable in multiple modes and related methods
A reflector antenna system may include an arc-shaped antenna reflector defining a first antenna beam, and a phased array antenna positioned in the first antenna beam including first and second...
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6999035 |
Antenna device and method of manufacturing same
An antenna device and a method of manufacturing the same are provided. The antenna device can receive a plurality of radio waves, with a small number of parts and at low cost. The antenna device...
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6977623 |
Wideband slotted phased array antenna and associated methods
A phased array antenna includes a substrate, and a patterned conductive layer is on the substrate. The patterned conductive layer defines a plurality of slotted dipole antenna elements each having...
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6965784 |
Transreflector antenna for wireless communication system
A compact lightweight antenna for receiving microwave direct line of sight wireless data signals used in services such as Local Multipoint Distribution Services (LMDS). The antenna provides for...
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6965354 |
Narrow beam antenna
A method for making an antenna and the antenna itself are described. The antenna comprises a first region having a first refractive index and a second region having a negative refractive index, the...
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6958729 |
Phased array metamaterial antenna system
An efficient, low-loss, low sidelobe, high dynamic range phased-array radar antenna system is disclosed that uses metamaterials, which are manmade composite materials having a negative index of...
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6943743 |
Redirecting feedthrough lens antenna system and related methods
A redirecting feedthrough lens antenna system may include first and second phased array antennas coupled together in back-to-back relation. More particularly, the first and second phased array...
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6943742 |
Focal plane array for THz imager and associated methods
A high-frequency imaging system for the millimeter and submillimeter radiation includes a high frequency lens to image an object at its focal plane. The object emits electromagnetic radiation at a...
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6894652 |
Dielectric lens with changeable focal length using fluidic dielectrics
A dielectric lens antenna ( 100 ) includes a dielectric lens unit ( 101 ) having a plurality of cavities ( 106 ) and at least one fluidic dielectric having a permittivity and a permeability. The...
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6825814 |
Antenna
An antenna comprising: (a) semi-conductor means ( 1 ) having upper and lower surfaces; the upper and lower surfaces having a pattern of electrically conducting regions; (b) first generating means (...
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6812903 |
Radio frequency aperture
A radio frequency aperture comprising a plurality of insulating layers disposed in a stack, each layer including an array of conductive regions, the conductive regions being spaced from adjacent...
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6801173 |
Structure with switchable magnetic properties
A structure ( 40 ) with switchable magnetic properties comprises: an array of capacitive elements ( 44 ) in which each capacitive element ( 44 ) includes a low resistance conducting path and is...
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6768468 |
Reflecting surfaces having geometries independent of geometries of wavefronts reflected therefrom
A flat metal plate ( 20 ) has a plurality of holes ( 50 ) that have a property that changes across the surface of the plate so that the flat plate ( 20 ) mimics the behavior of a curved wavefront...
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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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6703979 |
Grating
A grating comprising a plurality of substantially parallel members having a conducting surface of depth L, separated by a dielectric layer gap, and having of pitch λ g and where L>16λ g . The...
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6686867 |
Radar sensor and radar antenna for monitoring the environment of a motor vehicle
A radar sensor and a radar antenna are for monitoring the environment of a motor vehicle. A compact construction is achieved by the planar array of both the control circuit and the radar antenna,...
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