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Blue Danube Systems Inc patents


Recent patent applications related to Blue Danube Systems Inc. Blue Danube Systems Inc is listed as an Agent/Assignee. Note: Blue Danube Systems Inc may have other listings under different names/spellings. We're not affiliated with Blue Danube Systems Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "B" | Blue Danube Systems Inc-related inventors


Antenna element self-test and monitoring

A method of testing a phased array antenna that includes a plurality of antenna element pairs, each antenna element pair of the plurality of antenna element pairs including a first antenna element and a second antenna element, the method including: for each antenna element pair of the plurality of antenna element pairs, performing a first cross element gain measurement from the first antenna element to the second antenna element of that antenna element pair; and determining whether there is a problem associated with the phased array antenna by examining the first cross element gain measurements for the plurality of antenna element pairs.. . ... Blue Danube Systems Inc

Distributing coherent signals to large electrical distances over serial interconnections

A method involving a serial interconnection system having a first node, a second node, a plurality of calibration nodes that are electrically connected in series by the serial interconnection system, and a plurality of connection nodes corresponding to the plurality of serially connected calibration nodes and electrically connected in series by the serial interconnection system, the method involving: for each of the plurality of calibration nodes performing a measurement procedure involving: injecting a corresponding reference signal into that calibration node; and while the corresponding reference signal is being injected into that calibration node, determining a summation of the phases of signals appearing at the first and second nodes; from the determined phase summations for the plurality of calibration nodes, computing phase corrections for each of the plurality of calibration nodes; and applying the phase corrections to the corresponding plurality of connection nodes.. . ... Blue Danube Systems Inc

Antenna element self-test and monitoring

A method of testing a phased array antenna that includes a plurality of antenna element pairs, each antenna element pair of the plurality of antenna element pairs including a first antenna element and a second antenna element, the method including: for each antenna element pair of the plurality of antenna element pairs, performing a first cross element gain measurement from the first antenna element to the second antenna element of that antenna element pair; and determining whether there is a problem associated with the phased array antenna by examining the first cross element gain measurements for the plurality of antenna element pairs.. . ... Blue Danube Systems Inc

Synthesizing cross-polarized beams with a phased array

A method involving providing a phased array antenna system having m antenna element pairs, each antenna element pair including a vertically oriented antenna element and a horizontally oriented antenna element; and with the phased array antenna system, generating n cross-polarized beams bj, where j=1 . . ... Blue Danube Systems Inc

Antenna mapping and diversity

A method involving an antenna array for wirelessly transmitting information carried by a source signal stream that includes a plurality of individual transmit signal streams, the method involving: mapping the plurality of transmit signal streams to a plurality of individual beam signal streams, wherein at least one of the beam signal streams of the plurality of beam signal streams is a combination of multiple transmit signal streams of the plurality of transmit signal streams; using the antenna array to generate a plurality of transmit beams; and sending each beam signal stream of the plurality of beam signal streams over a different transmit beam of the plurality of transmit beams.. . ... Blue Danube Systems Inc

Multi-beam crest factor reduction

A system for use with beam signals, the system including: a crest factor reduction (cfr) module having inputs and corresponding outputs, wherein each of the inputs is for receiving a corresponding different beam signal of the beam signals and wherein each output corresponds to a different input of the plurality of inputs and is for outputting a different cfr-adjusted signal of a plurality of cfr-adjusted signals, each cfr-adjusted signal of the plurality of cfr-adjusted signals corresponding to a different beam signal of the plurality of beam signals; and a transmitter connected to the outputs of the cfr module, wherein the cfr module is configured to perform crest factor reduction on the beam signals to generate the plurality of cfr-adjusted signals, and wherein the crest factor reduction performed on the beam signals is based on a weighted sum of the magnitudes of multiple beams signals among the beam signals.. . ... Blue Danube Systems Inc

Low thermal impedance structure in a phased array

An antenna system including: a metal base plate; an antenna element arranged on and extending away from the front side of the base plate; a circuit board including a ground plane, adjacent to, and in thermal contact with the base plate; a plurality of electrical components on the circuit board including a power amplifier and an i/o connector; a metal support plate separated from, parallel to, and facing the base plate, with the circuit board located between the base and support plates; a plurality of thermally conductive standoffs thermally connecting the base plate to the support plate; and a master board including an i/o connector mating with the i/o connector on the circuit board and electrically connecting the circuit board to the master board, the master board located between the circuit board and the support plate and including signal paths for routing signals to the circuit board.. . ... Blue Danube Systems Inc

Calibrating a serial interconnection

A method for calibrating a serial interconnection system having a first node, a second node, calibration nodes that are electrically connected in series by the serial interconnection system, and connection nodes corresponding to the serially connected calibration nodes, the connection nodes electrically connected in series by the serial interconnection system, the calibration method involving: for each of the calibration nodes performing a measurement procedure involving: injecting a corresponding reference signal into that calibration node; and while the corresponding reference signal is being injected into that calibration node, measuring the phase difference of signals appearing at the first and second nodes; from the measured phase differences for the calibration nodes, computing phase corrections for each of the calibration nodes; and applying the phase corrections computed for each of the calibration nodes to the corresponding connection nodes.. . ... Blue Danube Systems Inc

Calibrating a serial interconnection

A method for calibrating a serial interconnection system having a first node, a second node, calibration nodes that are electrically connected in series by the serial interconnection system, and connection nodes corresponding to the serially connected calibration nodes, the connection nodes electrically connected in series by the serial interconnection system, the calibration method involving: for each of the calibration nodes performing a measurement procedure involving: injecting a corresponding reference signal into that calibration node; and while the corresponding reference signal is being injected into that calibration node, measuring the phase difference of signals appearing at the first and second nodes; from the measured phase differences for the calibration nodes, computing phase corrections for each of the calibration nodes; and applying the phase corrections computed for each of the calibration nodes to the corresponding connection nodes.. . ... Blue Danube Systems Inc

Active array calibration

A method of calibrating a phased array including an array of antenna elements, rf communication circuits each of which is electrically coupled to a different corresponding antenna element within the array of antenna elements, and a signal feed network that electrically couples a first signal line to second signal lines, wherein each second signal line is electrically coupled to a different corresponding rf communication circuit among the rf communication circuits, the method involving: performing a first phase of a calibration operation, the first phase of the calibration operation involving calibrating the signal feed network independent of the rf communication circuits; and performing a second phase of the calibration operation, the second phase of the calibration operation involving calibrating, independent of the signal feed network, each of the rf communication circuits until all rf communication circuits among the rf communication circuits are calibrated.. . ... Blue Danube Systems Inc

Modular phased array

A removable module for a phased array, the module including: a circuit board having a ground plane formed on one side of the circuit board; an antenna mounted on and extending away from a topside of the circuit board; circuitry on a backside of the circuit board, the circuitry including an rf front end circuit coupled to the antenna; and a group of one or more first connecters mounted on the backside of the circuit board, the first connectors for physically and electrically connecting and disconnecting the module from a master board through a corresponding group of one or more matching second connectors on the master board, the first connectors on the module having electrically conductive lines for carrying an externally supplied lo signal for the rf front end circuit and an if signal for or from the rf front end circuit.. . ... Blue Danube Systems Inc








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