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7609210 |
Phased array antenna system utilizing a beam forming network
In accordance with an embodiment, a phased array antenna system includes a printed wiring board formed in rhombic shape that accommodates requirements for low observability and a beam forming...
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7605768 |
Multi-beam antenna
A plurality of antenna end-fire antenna feed elements at a corresponding plurality of locations and oriented in a corresponding plurality of directions on a third dielectric substrate cooperate...
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7605767 |
Space-fed array operable in a reflective mode and in a feed-through mode
A space-fed array is selectively operable in a reflective mode or in a feed-through mode. The array includes, in an exemplary embodiment, a primary array; and a feed array. The primary array...
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7595760 |
Airship mounted array
A space-fed conformal array for a high altitude airship includes a primary array lens assembly adapted for conformal mounting to a non-planar airship surface. The lens assembly includes a first set...
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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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7576701 |
Rotating screen dual reflector antenna
A system for steering a beam includes a main reflector that receives a signal from a subreflector and reflects the signal in a reflection direction. A prism refracts the signal in a refraction...
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7548212 |
Cylindrical electronically scanned antenna
The present invention relates to a cylindrical electronically scanned antenna. The antenna has: a set of radiating guides ( 2 ) arranged in cylinder form for, producing the antenna beam ( 8 ); An...
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7545841 |
Composite material with proximal gain medium
An apparatus and related methods are described, the apparatus comprising a composite material layer configured to exhibit at least one of a negative effective permittivity and a negative effective...
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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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7538735 |
Active transmit array with multiple parallel receive/transmit paths per element
An antenna including an array of N-port receive antennas; an array of M-port transmit antennas; and a plurality of cells for coupling the receive antennas to the transmit antennas, each cell having...
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7526249 |
Satellite ground station to receive signals with different polarization modes
A satellite ground station to receive signals with different polarization modes is described. In one example, the system includes a method of receiving a signal from a satellite at a feed,...
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7518566 |
Waveguide structure for creating a phase gradient between input signals of a system of antenna elements
A planar waveguide structure for creating a phase gradient between the input signals of a system of antenna elements requires relatively little space and also ensures relatively low-loss beam...
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7505010 |
Antenna control system
An antenna control system for setting the tilt angle of a main lobe of an antenna, in particular of an antenna constituting part of a base station in a mobile cellular communication system, said...
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7498941 |
IC tag communication system
An IC tag communication system according to an aspect of the present invention includes: a plurality of reader antennas which receive radio waves emitted from an IC tag attached to an article, the...
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7486235 |
Antenna system for improving the performance of a short range wireless network
An antenna system for providing network access services to wireless users generates at least a first and a second antenna beam, where the second antenna beam is movable with respect to the first....
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7474273 |
Gas plasma antenna
A gas plasma antenna with a rigid, flexible, or semi-flexible substrate and an improved method of generating a uniform electron density. The antenna comprises a plasma display panel (PDP)...
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7463214 |
Method and apparatus for steering radio frequency beams utilizing photonic crystal structures
An RF beam steering device according to present invention embodiments employs a prism assembly to steer an RF beam. The prism assembly includes a plurality of dielectric prisms each with an...
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7446712 |
Composite right/left-handed transmission line based compact resonant antenna for RF module integration
An apparatus based on composite right-handed or left-handed (CRLH) principles to provide a transmission line or antenna structure having a plurality of cells to which one or more feed ports are...
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7443573 |
Spatially-fed high-power amplifier with shaped reflectors
A spatially-fed high-power amplifier comprises one or more shaped reflectors to reflect an initial wavefront, and an active array amplifier to amplify the reflected wavefront to generate a...
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7439913 |
Microstrip reflectarray antenna
A microstrip reflectarray antenna with a low cross polarization level is disclosed. The microstrip reflectarray antenna of the present invention comprises: a ground plate; a reflecting plate with...
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7425928 |
Method and apparatus for frequency selective beam forming
A directive antenna having plural antenna elements is arranged in a parasitic antenna array. Frequency selective components are connected to an active antenna element. Weighting structures are...
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7423601 |
Reflect array antennas having monolithic sub-arrays with improved DC bias current paths
Embodiments of active array antennas are generally described herein. Other embodiments may be described and claimed. In some embodiments, a reflect array antenna includes an array of rectangular...
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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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7415244 |
Multi-channel millimeter wave imaging system
A broad-band millimeter wave imaging system with improved thermal resolution as compared to prior art devices. The system is useful for producing images of metal and non-metal objects such as guns,...
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7411472 |
Low-loss integrated waveguide feed for wafer-scale heterogeneous layered active electronically scanned array
A wafer-scale heterogeneous layered active electronically scanned array (ESA) utilizes a low-loss integrated waveguide feed. The ESA is formed from wafer-scale subarray modules each of which...
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7391382 |
Transmit/receive module and method of forming same
According to an embodiment of the present invention, a transmit/receive module for a phased array radar includes a substrate, a ground plane formed outwardly from the substrate, and one or more...
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7388557 |
Antenna which is made from a photonic band gap (PBG) material and which comprises a lateral wall surrounding an axis
A antenna made from a photonic band-gap (PBG) material, includes: a lateral wall ( 4 ) which is made from a PBG material and which completely surrounds a central axis ( 6 ), the wall being disposed...
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7378914 |
Solid-state high-power oscillators
Embodiments of High-Power Millimeter-Wave Oscillators are generally described herein. Other embodiments may be described and claimed. In some embodiments, the oscillator includes a polarized...
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7372402 |
Method for enhancing the measuring accuracy in an antenna array
The invention refers to a method and a system for enhancing the measuring accuracy in an antenna array ( 1 ), where the method comprises the steps of; a) receiving analog signals on all antenna...
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7339544 |
Array antenna for suppressing back signal and method for designing the same
The present invention provides a method for designing a front directional array antenna for suppressing a back signal used in a wireless communication, comprising: (a) an analogous pattern element...
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7339539 |
Photonic crystal exhibiting negative refraction without requiring a negative effective index
A periodic electromagnetic medium is disclosed that includes a surface that provides an interface with an ambient medium and a periodic structure that provides negative refraction within the medium...
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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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7333070 |
Radio wave lens antenna device
An antenna device using an approximate Luneberg lens, wherein high gain and low side-lobe are made compatible. A lens antenna device comprising, combine with each other, a radio wave lens ( 1 )...
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7308286 |
Multi-dimensional joint searcher and channel estimators
A wireless communication receiver ( 20 ) comprises an antenna structure ( 22 ) and a joint searcher and channel estimator ( 24 ). The antenna structure acquires dimensionally differentiated signals...
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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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7289067 |
Wireless tag gate reader
In a wireless tag gate reader that includes a plurality of antenna pairs that is disposed oppositely to each other so as to form a path space where a recognition target with a wireless tag goes...
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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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7271899 |
Millimetre-wave detection device for discriminating between different materials
A detection device that can be used for detecting objects behind clothing etc including a dielectric lens and a receive element sensitive to millimetre wave radiation. Prior art systems produce an...
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7253788 |
Mixed-signal systems with alternating impedance electromagnetic bandgap (AI-EBG) structures for noise suppression/isolation
Alternating impedance electromagnetic bandgap (AI-EBG) structures, systems incorporating AI-EBG structures, and methods of making AI-EBG structures, are disclosed.
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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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7236138 |
Externally powered negatively refracting photonic bandgap medium
An electromagnetic medium is described, the electromagnetic medium comprising a periodic array patterned to provide at least one photonic bandgap and to provide negative refraction for incident...
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7233627 |
Method for searching pilot signals to synchronize a CDMA receiver with an associated transmitter
A method for synchronizing a CDMA receiver to a transmitter when an adaptive antenna is utilized to receive transmitted data, wherein a receiving antenna system is adapted between a 360° reception...
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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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7218902 |
Antenna for communication with a satellite
A telecommunication system uses a satellite antenna showing on the horizontal plane, a sufficiently narrow radiation lobe to discriminate two adjacent satellites and showing on the vertical plane,...
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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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7212170 |
Antenna beam steering via beam-deflecting lens and single-axis mechanical rotator
An antenna beam steering apparatus and method comprising providing an antenna, employing a beam-deflecting lens through which energy passing from and to the antenna is deflected, and rotating 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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7202830 |
High gain steerable phased-array antenna
A high gain, steerable phased array antenna includes multiple oblong slots. For each of the oblong and preferably rectangular slots, an electrical microstrip feed line is disposed within a parallel...
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7194236 |
Millimeter wave imaging system
A millimeter wave imaging system that includes at least one millimeter wave frequency scanning antenna for collecting frequency dependent beams of millimeter wave radiation from a narrow...
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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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