Patents Assigned to BAE SYSTEM INFORMATION AND ELECTRONIC SYSTEM INTEGRATION INC.
  • ACOUSTIC PROJECTOR HAVING MINIMIZED MECHANICAL STRESSES
    Publication number: 20100008191
    Abstract: An acoustic projector which includes an outer shell formed of a reinforced epoxy resin having a longitudinal slot has an inner reinforcing liner formed of metal to reduce mechanical stress. The liner extends throughout the length of the outer shell and has a longitudinal slot aligned with the slot formed in the shell. An arcuate shaped driver is mounted along a portion of the I.D. of the metal liner and separated therefrom by insulation. In an alternate embodiment, the outer shell is formed of a plurality of overlapping layers of epoxy/graphite strips extending at various angles to increase the Z-axis stiffness.
    Type: Application
    Filed: September 17, 2009
    Publication date: January 14, 2010
    Applicant: BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC.
    Inventors: Jason W. Osborn, Matthew M. DeAngelis
  • WIDEBAND DIFFERENTIAL AMPLIFIER INCLUDING SINGLE-ENDED AMPLIFIERS COUPLED TO A FOUR-PORT TRANSFORMER
    Publication number: 20100007416
    Abstract: A differential amplifier is formed from a first single-ended amplifier circuit, a second single-ended amplifier circuit, and a four-port transformer circuit coupled to the first and second single-ended amplifier circuits to form the differential amplifier.
    Type: Application
    Filed: September 22, 2009
    Publication date: January 14, 2010
    Applicant: BAE SYSTEMS Information and Electronic Systems Integration, Inc.
    Inventor: David E. Meharry
  • Soldier/ground vehicle passive ranging system utilizing compact spatiotemporal processor
    Patent number: 7642963
    Abstract: A method of two-source passive ranging comprising the steps of determining the coordinates of a first position and a second position wherein a first soldier or ground vehicle is located at the first position and a second soldier or ground vehicle is located at the second position; determining individual angles between said first and second positions and a radio frequency source; and using individual single-angle accuracy values to estimate the range from the first and second positions to the radio frequency source.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: January 5, 2010
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: John T. Apostolos, Ronald M. Yannone
  • BANDWIDTH EFFICIENT WIRELESS NETWORK MODEM
    Publication number: 20090310619
    Abstract: A modem that provides efficient use of wireless network bandwidth in the presence of multiuser interference and noise is disclosed. The modem design provides for compatibility with existing network hardware and protocols so that new efficient modems may be added to the network without removing installed hardware and software.
    Type: Application
    Filed: August 27, 2009
    Publication date: December 17, 2009
    Applicant: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Karl D. BROMMER
  • Combined radar and communications link
    Patent number: 7633426
    Abstract: In a CW radar system for detecting motion behind a wall (12) involving modulation of the radar transmission, means (34) are provided to interrupt the CW wave when motion is detected and to use the same radar transmitter (30) to transmit a serial digital message to a remote monitoring receiver (34). The encoding can include a receiver wakeup message to turn on the receive only when motion has been detected. In one embodiment, a microprocessor (28) is used to detect when motion exists behind a wall and to provide a tailorable message to modulate the radar's transmitter in the period when the CW signal from the radar is turned off after the motion detector.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: December 15, 2009
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Eldon M. Sutphin
  • High power, motor driven underwater acoustic transducer
    Patent number: 7633835
    Abstract: A high intensity, low frequency underwater transducer for non-lethal deterrence of terrorist swimmers or divers in a body of water. The invention consists of a motor driven flextensional underwater transducer. In one embodiment, the phase of a transducer is sensed, enabling multiple projectors to achieve high acoustic sound pressure levels by beamforming and/or modal constructive interference (e.g. taking advantage of harbor bottom topography and boundaries.).
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: December 15, 2009
    Assignee: BAE Systems Information And Electronic Systems Integration Inc.
    Inventors: Kenneth R. Erikson, Eric M. Will
  • Duplexer for simultaneous transmit and receive radar systems
    Patent number: 7633435
    Abstract: An enhanced duplexer (1) which includes a combination of high dynamic range (HDR) amplifiers (11, 17) and a naovel signal cancellation circuit topology (15). Return signals from the circulator (3) are fed into the first HDR amplifier (11). A portion of the transmit signal is sampled with a directional coupler (7) and amplified with a second HDR amplifier (17) and then combined with the output of the first HDR amplifier (11) using a second directional coupler (13). The gain and phase of the second io amplifier (17) are adjusted so the leakage signals are canceled (19, 21) to enable a radar system to simultaneously transmit and receive signals to and from an antenna with increased sensitivity of operation.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: December 15, 2009
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: David E. Meharry, Stephen A. Hedges
  • FUSION OF IMAGE BLOCK ADJUSTMENTS FOR THE GENERATION OF A GROUND CONTROL NETWORK
    Publication number: 20090296982
    Abstract: A method for fusion of image block adjustments for the generation of a ground control network constituting a Metric Information Network (MIN). Utilizing the subject. fusion algorithm it is possible to duplicate the results of an extremely large simultaneous image block adjustment by sequentially performing smaller image block adjustments on small overlapping areas of interest and taking the results to update a metric information network. Note, intermediate results for less than all the imagery provide usable updates to the metric information network. The result of the infusion of sequential image block adjustments into the metric information network is that one can obtain the accuracy provided by an extremely large single image block adjustment, and do so in manageable chunks or segments involving conventional computer resources.
    Type: Application
    Filed: May 20, 2009
    Publication date: December 3, 2009
    Applicant: BAE Systems Information and Electronics Systems Integration Inc.
    Inventor: John T. Dolloff
  • JOINT SYMBOL, AMPLITUDE, AND RATE ESTIMATOR
    Publication number: 20090290667
    Abstract: The system in one embodiment relates to tightly integrating parameter estimation, symbol hypothesis testing, decoding, and rate identification. The present invention provides Turbo-decoding for joint signal demodulation based on an iterative decoding solution that exploits error correction codes. The system iteratively couples an initial amplitude estimator, a symbol estimator, a bank of decoders, and a joint amplitude estimator to produce the symbol estimates.
    Type: Application
    Filed: June 25, 2009
    Publication date: November 26, 2009
    Applicant: BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC.
    Inventor: Thomas P. McElwain
  • Method for reworking a microwave module
    Patent number: 7621033
    Abstract: A specialized tool is provided for the removal of components in a microwave module in which a fixed tool having a channeled tip is positioned adjacent the component to be removed, with hot gas from the channeled tip melting the epoxy or solder and with the module forced against the fixed tool to remove it.
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: November 24, 2009
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Richard A. Rochford, Robert F. Madej
  • Ultra compact UHF satcom antenna
    Patent number: 7623075
    Abstract: A miniature volumetric spherical geometry with multiple symmetric feeds is spaced from the surface of the vehicle or platform, with the antenna exhibiting both circular polarization that is orientation-independent or angle of arrival independent, while at the same time covering a broad band of frequencies from 243-318 MHz in one embodiment.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: November 24, 2009
    Assignee: BAE Systems Information and Electronics Systems Integration Inc.
    Inventor: John T. Apostolos
  • DISPERSIVE ANTENNA FOR RFID TAGS
    Publication number: 20090284351
    Abstract: RFID tag designs and sensors are disclosed that include a dispersive antenna and exhibit greater detection ranges relative to conventional designs. The designs include, for example a transponder having including a rectifier, a radio-frequency identification (RFID) circuit for receiving and responding to interrogation signals, and a frequency dispersion element for receiving a multi-phase input signal and creating a pulse therefrom for input to the rectifier. Frequency-dispersive elements (e.g., antennas) and compatible interrogation waveforms can be used so that the rectifying diodes receive high peak voltage levels relative to the average voltage levels.
    Type: Application
    Filed: November 14, 2008
    Publication date: November 19, 2009
    Applicant: BAE SYSTEM Information and Electronic Systems Integration Inc.
    Inventors: Court Rossman, John T. Apostolos, Karl D. Brommer
  • BROADBAND TRANSMISSION LINE TRANSFORMER
    Publication number: 20090284323
    Abstract: A broadband transmission line impedance transformer performs impedance transformation with improved frequency response and efficiency across a wide operational bandwidth. In particular, the bandwidth of a transmission line 2:1 impedance transformer may be significantly increased by adding an additional compensating capacitor as an internal component between interconnected transmission lines. This capacitor effectively improves low frequency response for a given length of transmission lines and decreases mismatch in an entire frequency range. The overall bandwidth ratio increases at least twice and mismatch decreases.
    Type: Application
    Filed: July 23, 2009
    Publication date: November 19, 2009
    Applicant: BAE systems Information and Electronic Systems Integration Inc.
    Inventor: Simon Y. LONDON
  • MONOLITHICALLY INTEGRATED LIGHT-ACTIVATED THYRISTOR AND METHOD
    Publication number: 20090278409
    Abstract: A monolithically integrated light-activated thyristor in an n-p-n-p-n-p sequence consists of a four-layered thyristor structure and an embedded back-biased PN junction structure as a turn-off switching diode. The turn-off switching diode is formed through structured doping processes and/or depositions on a single semiconductor wafer so that it is integrated monolithically without any external device or semiconductor materials. The thyristor can be switching on and off optically by two discrete light beams illuminated on separated openings of electrodes on the top surface of a semiconductor body. The carrier injection of the turning on process is achieved by illuminating the bulk of the thyristor with a high level light through the first aperture over the cathode to create high density charge carriers serving as the gate current injection and to electrically short the emitter and drift layer.
    Type: Application
    Filed: July 22, 2009
    Publication date: November 12, 2009
    Applicant: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Yeuan-Ming SHEU
  • M-Algorithm multiuser detector with correlation based pruning
    Patent number: 7613228
    Abstract: A multiuser detector system with correlation based pruning including a parameter estimation module adapted to receive complex signals, and to produce estimated signature waveforms for each of K co-channel interfering signals. Pre-processing the estimated signature waveforms using an S-matrix module and producing a more valid set of hypotheses, wherein the S-matrix module uses apriori knowledge of an unnormalized cross correlation matrix, and processing the more valid set of hypotheses for pruning with an M-algorithm in a multiuser detector module. An improvement to the M-algorithm in which the interference structure based on the signal correlation matrix used during the optimization process aids in selecting a better subset of hypotheses to test. This approach has the benefit of reducing computational complexity and improving performance over the existing M-algorithm.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: November 3, 2009
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Joshua D Niedzwiecki
  • Photonic coupling scheme for photodetectors
    Patent number: 7611920
    Abstract: A room temperature operation polycrystalline infrared responsive photodetector, manufactured by a process, comprising the steps of patterning vacuum-deposited material and dry-etching a photonic crystal structure with resonant coupling tuned to long wavelengths.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: November 3, 2009
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Steven R. Jost
  • PHOTO-PATTERNED CARBON ELECTRONICS
    Publication number: 20090267189
    Abstract: A system is provided for the manufacture of carbon based electrical components including, an ultraviolet light source; a substrate receiving unit whereby a substrate bearing a first layer of carbon based semiconductor is received and disposed beneath the ultraviolet light source; a mask disposed between the ultraviolet light source and the carbon based semiconductor layer; a doping agent precursor source; and environmental chemical controls, configured such that light from the ultraviolet light source irradiates a doping agent precursor and the first carbon layer.
    Type: Application
    Filed: July 6, 2009
    Publication date: October 29, 2009
    Applicant: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Daniel N. CAROTHERS, Rick Thompson
  • Vehicular multiband antenna
    Patent number: 7609215
    Abstract: A coaxial antenna is implemented that combines a VHF and UHF antenna on a common radiating element. The antenna may further include a satellite antenna that, together with the VHF/UHF antenna fits into a whip antenna footprint. The antenna incorporates chokes that may be implemented using meanderline techniques.
    Type: Grant
    Filed: April 12, 2007
    Date of Patent: October 27, 2009
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: John T. Apostolos
  • Acoustic projector having minimized mechanical stresses
    Patent number: 7609586
    Abstract: An acoustic projector which includes an outer shell (8) formed of a reinforced epoxy resin having a longitudinal slot (14) has an inner reinforcing liner (20) formed of metal to reduce stress. The liner (20) extends throughout the length of the outer shell and has a longitudinal slot (22) aligned with the slot (14) formed in the shell (8). An arcuate shaped driver (10) is mounted along a portion of the I.D. of the metal liner (20) and separated therefrom by insulation (24).
    Type: Grant
    Filed: October 12, 2004
    Date of Patent: October 27, 2009
    Assignee: BAE Systems Information And Electronic Systems Integration Inc.
    Inventors: Jason W. Osborn, Matthew M. DeAngelis
  • DECADE BANDWIDTH PLANAR MMIC FOUR PORT TRANSFORMER
    Publication number: 20090261901
    Abstract: A wide bandwidth planar four port MMIC transformer is provided by input diplexers which divide up the incoming signal into a high band and a low band, with the resulting signals coupled to high band and low band four port transformers implemented in one embodiment using spiral inductors and coupled lines, the outputs of which are combined using two output diplexers to provide a decade bandwidth transformer.
    Type: Application
    Filed: June 29, 2009
    Publication date: October 22, 2009
    Applicant: BAE Systems information and electronic Systems Integration Inc.
    Inventor: David E. MEHARRY