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7609971 |
Electro optical scanning multi-function antenna
An multi-beam multifunction electro optical scanning antenna having a first variable wavelength tunable laser having an output wavelength variable within a first range and a second variable...
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7602337 |
Antenna array including a phase shifter array controller and algorithm for steering the array
An antenna system may include an antenna array which includes a plurality of radiating elements. The system may also include a phase shifter controller and algorithm to apply a non-periodic...
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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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7557752 |
Apparatus and method for communication
There is provided a communication method including: generating a channel estimated value for each antenna by performing channel estimation using a received signal by each antenna; calculating...
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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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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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7420509 |
Methods and apparatus for adaptively performing algebraic interference cancellation
An adaptive algebraic interference cancellation technique for canceling interference from a signal of interest received by an array of antenna elements involves: generating a set of 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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7417587 |
Ferrite phase shifter and phase array radar system
A phase shifter comprises a substrate, a ground plane formed on a first surface of the substrate, a support structure positioned on a second surface of the substrate opposite the first surface,...
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7415295 |
Wireless telephone antenna diversity system and method
A system and method are provided for diversifying radiated electromagnetic communications in a wireless communication device having a plurality of embedded antennas. The method comprises sensing...
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7408507 |
Antenna calibration method and system
A phased array antenna system includes an RF front end, a radome, and an optical calibrator embedded in the radome for enabling in-situ calibration of the RF front end. The optical calibrator...
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7397425 |
Electronically steerable sector antenna
An electronically steerable antenna system includes a plurality of panels that are coupled together to form an N-sided polygon. Each panel includes a plurality of microstrip conductor patches...
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7394424 |
Methods and apparatus for implementing a wideband digital beamforming network
The present invention concerns methods and apparatus for implementing a true-time-delay wideband digital beamformer. In true-time-delay wideband digital beamformers of the present invention,...
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7391381 |
Vehicle mounted satellite antenna system with in-motion tracking using beam forming
The present invention relates to a vehicle mountable satellite antenna as defined in the claims which is operable while the vehicle is in motion. The satellite antenna of the present invention can...
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7391367 |
Optically frequency generated scanned active array
A system for scanning an antenna array of the present invention. The system includes a first mechanism for modulating a desired signal on an optical carrier signal. The first mechanism includes a...
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7382311 |
Method, computer program product and system for differentiating physical sources from second order nonlinear signal effects
A system for differentiating between a signal from a physical source and a nonlinear signal effect includes an array, a delay control element and a signal processing element. The array is...
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7348932 |
Tile sub-array and related circuits and techniques
A radiator includes a waveguide having an aperture and a patch antenna disposed in the aperture. In one embodiment, an antenna includes an array of waveguide antenna elements, each element having a...
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7342534 |
Phased array radio frequency pulse generator
A phased array radio frequency pulse generator includes a plurality of radio frequency pulse generator units ( 4, 4 a , 4 b , 4 c ) each having a non-linear dispersive electrical circuit ( 1 )...
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7324048 |
Wavelength division multiplexing methods and apparatus for constructing photonic beamforming networks
Methods and apparatus for constructing phased array antenna beamforming networks are provided, that allow to scan multiple beams and select appropriate sets of delay lines simultaneously. The...
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7286800 |
Multi-beam antenna reception device and multi-beam reception method
To provide a multibeam antenna reception device capable of improving the reception quality while suppressing an increase in the amount of computation. The multibeam antenna reception device...
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7274331 |
Phase-shifting system using a displaceable dielectric and phase array antenna comprising such a phase-shifting system
A phase-shifting system for electrically swiveling the direction of a beam of an antenna field includes several radiators with two planes of polarization. The phase-shifting system includes two...
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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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7224247 |
Phase shifter device having a microstrip waveguide and shorting patch movable along a slot line waveguide
A phase shifter device comprising a substrate defining a slot line waveguide having first and second ends and being operably coupled to a microstrip waveguide and a shorting patch is described. The...
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7209079 |
Beam steering apparatus
A beam steering apparatus including an antenna array having a plurality of antenna elements. The antenna elements are spatially arranged with respect to one another and being operable to receive...
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7205937 |
Non-multiple delay element values for phase shifting
Non-multiple delay element values that may be implemented to reduce periodic quantization errors associated with phase shifting devices used in phased array apparatus. The non-multiple delay...
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7187325 |
Methods and apparatus for reconfiguring antenna array patterns
A substrate is provided with a multiplicity of electrically conductive elements, and the elements are interconnected to form an antenna structure for desired application. Either the antenna pattern...
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7154962 |
Methods and apparatus for generating a constant-envelope composite transmission signal
An intervote modulator ( 10 ) includes a majority voting logic unit ( 12 ) and an interplex modulator ( 14 ). The majority voting logic unit receives plural signal codes (e.g., five codes x 1 , x 2...
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7154440 |
Phase array antenna using a constant-gain phase shifter
A constant-gain phase shifter is provided, comprising a first tank circuit with a first node to accept an input signal, a first inductor connected between the first node and a reference voltage,...
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7148842 |
Ferroelectric delay line based on a dielectric-slab transmission line
A delay line is made by sandwiching a thin slice of ferroelectric between two “cladding” layers of relatively low-ε, low loss material to form a dielectric slab waveguide, and may support the...
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7084811 |
Agile optical wavelength selection for antenna beamforming
An antenna beamformer consisting of optical irises coupled to Wavelength Division Multiplexers (WDMs). The ports of the WDMs are coupled to lens ports, where each lens port corresponds to a...
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7068220 |
Low loss RF phase shifter with flip-chip mounted MEMS interconnection
A hybrid circuit phase shifter assembly of RF MEMS switch modules and passive phase delay shifter circuits uses a low loss, preferably flip-chip, interconnection technology. The hybrid circuit...
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7068218 |
Calibration device for an antenna array, antenna array and methods for antenna array operation
An improved calibration device for an antenna array, or an improved antenna array, is of simple construction. If the total number of antenna elements which are provided for a column is N, where N...
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7057716 |
White cell antenna beamformers
A merged dual flipped White Cell including a White Cell having upper and lower cell regions; an optical deflector array for selectively deflecting light to either an upper image plane associated...
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7039433 |
Methods for determining times and changes of times of transmission, radio communications system and processor
The invention relates to a method for determining transmission times of signals transmitted by at least one radio transmitter BTS. In order to enhance the accuracy and reliability of estimates of...
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7038633 |
Antenna system and net drift verification
System and method for in-operation calibration of phased array antenna system, involv-ing outputting first and second calibration signals on separate calibration nets through same switches of...
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7034748 |
Low-cost, steerable, phased array antenna with controllable high permittivity phase shifters
A low-cost, steerable, phased array antenna suitable for use in wireless fidelity (WiFi) and other wireless telecommunication networks, in particular multi-hop ad hoc networks, is disclosed....
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7026988 |
Method and apparatus for passive optical extraction of signals
A communication method comprises dividing each of a plurality of optical carrier signals into a plurality of intermediate signals wherein each optical carrier signal carrying all of a plurality of...
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7026892 |
Transmission line phase shifter with controllable high permittivity dielectric element
A transmission line phase shifter ideally suited for use in low-cost, steerable, phased array antennas suitable for use in wireless fidelity (WiFi) and other wireless telecommunication networks, in...
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7026889 |
Adjustable antenna feed network with integrated phase shifter
A device for feeding signals between a common line and two or more ports. The device including a branched network of feedlines coupling the common line with the ports. The feedlines have...
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7019710 |
Antenna system
An antenna system for a transmitter, said antenna system comprising an array of antennas, said array being controllable to transmit a signal over part or all of a coverage area of said transmitter;...
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7009560 |
Adaptive variable true time delay beam-forming system and method
System and method for signal processing and beam forming. A system for processing signals includes a first phase shifter, a second phase shifter, a first variable time delay system, and a second...
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6989788 |
Antenna array having apparatus for producing time-delayed microwave signals using selectable time delay stages
A scanned antenna array includes time delay stages each having at least one time delay sub-circuit. Each time delay sub-circuit includes a sub-circuit input, a sub-circuit output, a first delay...
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6987990 |
Cellular base station augmentation system and method
A method and apparatus for augmenting an existing base station for cellular communications, especially when the existing base station includes a main antenna and a diversity antenna. The method...
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6975268 |
Phased array antenna including a distributed phase calibrator and associated method
A phased array antenna includes a transmission line network, e.g. optical or coaxial cable network, and a reference signal generator to provide a reference frequency signal to each of the antenna...
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6958665 |
Micro electro-mechanical system (MEMS) phase shifter
A micro electro-mechanical system (MEMS) phase shifter for shifting the phase of a radio frequency (RF) signal. The phase shifter includes a quadrature coupler having an input port, an output port,...
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6956916 |
Delayed decision feedback sequence estimation diversity receiver
A delayed decision feedback sequence estimation diversity receiver includes a section for extracting a plurality of reception signals by using a plurality of antennas when estimating a transmission...
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6950062 |
Method and structure for phased array antenna interconnect using an array of substrate slats
A phased array antenna is formed from an array of apertures having walls containing phase shifter devices for phase shifting and beam steering a radiated beam of the phased array antenna. The phase...
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6937112 |
S/N enhancer
A S/N enhancer using the magnetostatic wave signal. The S/N enhancer comprises a balun coupler for dividing an input signal into a first and second signals having the same power, the second signal...
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