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7619562 |
Phased array systems
A phased array system having antennas, non-variable phase shifters, and switches. The non-variable phase shifters are configured to be coupled selectively to a transmitter or a receiver. A...
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7609206 |
Enabling digital beamforming techniques for RF systems having short repetitive synchronization sequences
A system and method of enabling digital beamforming (DBF) for use with RF receiver systems with a multi-element array antenna having short repetitive synchronizaton sequences in a noise and/or...
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7602336 |
Coherently combining antennas
An apparatus includes antenna elements configured to receive a signal including pseudo-random code, and electronics configured to use the pseudo-random code to determine time delays of signals...
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7595753 |
Broadband beam steering antenna
An antenna apparatus attachable to the front-end of a transceiver circuitry, includes at least two balanced radiation elements forming a planar structure for transmitting and/or receiving a...
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7580674 |
Intelligent interface for controlling an adaptive antenna array
An antenna control interface is integrated with common integrated circuit components, such as radio transceiver or baseband modem signal processing control logic. The antenna control interface...
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7570211 |
Digital beamforming method and apparatus for pointing and null steering without calibration or calculation of covariance matrix
The method and system provides an improvement in signal to noise plus interference without utilizing a calculated covariance matrix or calibrated antenna array, and does not require knowledge of...
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7570209 |
Antenna system including a power management and control system
An antenna system may include a reconfigurable array antenna system including a plurality of elements each capable of radiating and receiving electromagnetic energy. The antenna system may also...
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7564407 |
Directivity control apparatus of array antenna and directivity controlling method
An array antenna directivity control apparatus for use in tracking a target updates a weighting coefficient based on an error between antenna signals of multiple antennas and a known reference...
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7555315 |
Smart antenna apparatus and method with automatic gain control
A smart antenna apparatus including a receiving system, one or more beam analysis modules, a control channel monitoring module, a processing system, and a receiving beam switch is provided. The...
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7548424 |
Distributed transmit/receive integrated microwave module chip level cooling system
A radar transmit and receive integrated microwave module with conductively cooled condenser side rails and one or more vacuum brazed fluid distribution manifold cold plates in fluid communication...
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7545778 |
Apparatus for antenna diversity using joint maximal ratio combining
A transceiver using composite beamforming technique is provided wherein a first communication device has a plurality of antennas and the second communication has a plurality of antennas. When the...
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7545570 |
System for selectively blocking electromagnetic energy
A system for selectively blocking electromagnetic energy. The system includes a first mechanism for employing a perforated component to pass a beam characterized by a first property and reject a...
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7545324 |
Phased array antenna systems and methods
Systems and methods are disclosed herein providing an improved approach to phased array antenna communications. In one example, an antenna system includes a digital beamformer adapted to receive a...
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7545322 |
Antenna transceiver system
Provided is an antenna transceiver system for transmitting and receiving voice, digital data, radar and IR signals, and for processing received signals for use by an operator. The system includes...
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7525926 |
Wireless communication using beam forming and diversity
A method and apparatus for wirelessly transmitting real-time data streams is described. To ensure continuous data flow, fast diversity and slow diversity can be used. Fast diversity chooses a...
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7518552 |
Antenna control system
A cellular base station telecommunication system includes a plurality of base station antenna sites, each site having one or more groups of base station antennas. A central controller is configured...
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7511665 |
Method and apparatus for a frequency diverse array
Method and apparatus for a frequency diverse array. Radio frequency signals are generated by a plurality of independent waveform generators and simultaneously applied to a transmit/receive module....
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7511664 |
Subassembly for an active electronically scanned array
According to an embodiment of the present invention, a subassembly for a phased array radar includes a substrate generally lying in a first plane, the substrate including a plurality of...
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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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7482976 |
Antenna calibration method and apparatus
Measurements of frequency and/or phase are taken at the signal ports (S 1 -S 4 ) of an ISS device ( 10 ). These measurements are used to determine phase errors within the ISS device, and phase...
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7480506 |
Satellite communication system
A communication system has a plurality of ground stations and a plurality of satellites located in a first orbit with respect to the earth. The satellites generate a plurality of beams...
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7474263 |
Electronically scanned antenna
An electronically scanned antenna may include a plurality of space-fed, contiguous subarrays arranged in an annular region, each subarray including an inner set of radiating elements facing...
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7463193 |
Beam forming system
A compact system can use modular components to enhance the isolation or quality of signals that an antenna array produces. The system can comprise an array of input coupler modules and an array of...
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7463190 |
Panel antenna with variable phase shifter
A panel antenna having a variable phase shifter module with at least one main-PCB having an input trace coupled to a wiper junction. An arcuate trace on the main-PCB extending between a first...
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7456787 |
Beam-forming antenna with amplitude-controlled antenna elements
A beam-forming antenna for transmission and/or reception of an electromagnetic signal having a given wavelength in a surrounding medium includes a transmission line electromagnetically coupled to...
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7453413 |
Reconfigurable parasitic control for antenna arrays and subarrays
Reconfiguration of parasitically controlled elements in a phased array is used to expand the range of operational functions. Embedded array elements can be frequency tuned, and bandwidth can be...
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7450065 |
Optimization of radar antenna switching hybrid in response to operating frequency
A radar system operates at various different frequencies, and routes power among various antennas by use of a hybrid arrangement. The system is precalibrated at each possible operating frequency by...
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7433713 |
Mobile radio base station
A mobile-radio base station for a teleconununicaions system includes vector modulator means for independently controlling the phase and/or amplitude of a plurality of component signals...
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7432856 |
Signal simulation device
A signal simulation device for testing and developing radio receivers adapted to orientate antenna beams to different radio transmitters and to simultaneously suppress interference signals,...
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7432855 |
RFID reader and active tag
In one embodiment, an RFID reader and active tag (RAT) includes: a first beam forming means for interrogating a plurality of RFID tags using at least a first set of two antennas coupled to a first...
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7429949 |
Robust beamforming based on nulls broadening and virtual antenna elements
A method and system for generating beamforming weights for a plurality of antenna elements is disclosed. The invention consists of generating broadened nulls in a direction of arrival corresponding...
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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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7423588 |
Phased array antenna system
The present antenna system includes a phased array antenna system comprising a limiting circuit, an isolation circuit, and a phasing circuit. The limiting circuit includes a system of fast signal...
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7423586 |
Antennas array calibration arrangement and method
In a radio communications system, a plurality of transceivers are each connected to one element of an array of antenna elements. In addition, at least one of the transceivers is additionally...
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7420508 |
Higher-order intermodulation reduction using phase and angle smearing
A method for reducing intermodulation beams includes applying a beam-smearing phase distribution in addition to a beam-steering distribution for scanning to an array of antenna elements such that...
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7420507 |
Phased array antenna systems with controllable electrical tilt
A phased array antenna system with controllable electrical tilt generates two signals V 2 a and V 2 b with variable relative delay therebetween. The signals are converted into antenna element...
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7417598 |
Compact, low profile electronically scanned antenna
A compact, low profile electronically scanned antenna module is provided. The antenna module includes a multi-layer antenna integrated printed wiring board (AiPWB) that includes a radiator layer on...
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7414580 |
Method and corresponding device for joint signal detection and direction of arrival estimation
A method and corresponding device for joint signal detection and direction of arrival estimation, based on the ability to identify both the existence and direction of arrival of a required signal...
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7414578 |
Method for efficiently computing the beamforming weights for a large antenna array
A method of determining the size of a sub-array for an antenna array is described. The method includes choosing a number of elements of a sub-array of antenna elements. Further, the method includes...
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7414577 |
Phase management for beam-forming applications
A beam-forming antenna system includes an array of integrated antenna circuits. Each integrated antenna circuit includes an oscillator coupled to an antenna. A network couples to the integrated...
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7403156 |
Method and system for performing digital beam forming at intermediate frequency on the radiation pattern of an array antenna
A method of performing digital beam forming on the radiation pattern of an array antenna using a plurality of antenna elements, each antenna element being coupled to a signal processing chain. A...
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7400296 |
Phased array antenna system with variable electrical tilt
A phased array antenna system with variable electrical tilt comprises an array ( 60 ) of antenna elements ( 60 L 1 ) etc. incorporating a divider ( 44 ) dividing a radio frequency (RF) carrier...
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7369085 |
Shared phased array beamformer
A shared beamformer flexibly allocates beams among phased array antenna apertures of a satellite (or other type of platform). By sharing the beamformer among the apertures, if one aperture is not...
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7366473 |
Method and apparatus for diversity switching control
A method and apparatus for diversity switching control are generally described herein. According to one embodiment, a diversity control network is introduced which effectively reduces the number of...
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7362266 |
Mutual coupling method for calibrating a phased array
A method for calibrating a phased array antenna comprises performing initial measurements of array antenna elements to ensure that calibration measurements are within the linear dynamic range of...
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7362261 |
Linear frequency-modulated pulse radar
A linear frequency-modulated pulse radar system is provided in which the echo signal is mixed with a de-ramp signal, in order to reduce the bandwidth. The transmission signal of the pulse radar and...
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7359733 |
Beam synthesis method for downlink beamforming in FDD wireless communication system
A method for downlink beamforming in a frequency-division-duplex wireless communications system comprising a base station with an antenna array and terminals that are physically remote from said...
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7358848 |
Wireless remote sensor
An integrated circuit implements a wireless remote sensor. The wireless remote sensor includes an antenna coupled to an energy distribution unit to allow passive collection of electrical charge. A...
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7355998 |
Support for multiple access point switched beam antennas
A plurality of virtual wireless networks are defined. Each of the plurality of virtual wireless networks has a different set of requirements. A node is capable of producing a plurality of antenna...
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7352325 |
Phase shifting and combining architecture for phased arrays
Improved phased array techniques and architectures are provided. For example, a linear phased array includes N discrete phase shifters and N−1 variable phase shifters, wherein the N−1 variable...
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