Patents by Inventor Johnny M. Harris

Johnny M. Harris has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10236839
    Abstract: Spatially combining signals may include receiving a number of RF input signals at a number of RF input connectors. At least one of the RF input signals is a variable envelope signal. A variable envelope signal is converted into two or more outphased constant envelope signals. The two or more outphased constant envelope signals are amplified. The amplified outphased constant envelope signals are radiated. At a spatial combiner aperture, the radiated amplified outphased constant envelope signals are combined to create a combined signal. The combined signal is output onto an output RF connector.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: March 19, 2019
    Assignee: L3 Technologies Inc.
    Inventors: Johnny M. Harris, Kyle D. Holzer, Janez Jeraj
  • Patent number: 10142136
    Abstract: Embodiments are directed to systems, apparatuses and methods for providing self-consistent outphasing signal separation. In one scenario, such an apparatus includes the following: a receiver configured to receive a variable-envelope signal and an outphasing separator including a digital electronic component configured to split the received variable-envelope signal into first and second constant-envelope signals. Splitting the received variable-envelope signal includes implementing various trigonometric or other functions using a consistent phase. The apparatus further includes a first analog component chain that includes various analog electrical components configured to receive and process the first constant-envelope signal, as well as a second analog component chain that includes various analog electrical components configured to receive and process the second constant-envelope signal.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: November 27, 2018
    Assignee: L3 Technologies Inc.
    Inventors: Janez Jeraj, Johnny M. Harris, David G. Landon, William K. McIntire
  • Patent number: 10103908
    Abstract: Embodiments are directed to an apparatus, method and system for relative or absolute equalization of two or more channels. The apparatus includes a receiver that receives a variable-envelope signal, a self-consistent outphasing separator that splits the received variable-envelope signal into constant-envelope signals, and linear pre-equalizers that equalize the constant-envelope signals relative to each other or to some target. The apparatus also includes an analog combiner that combines the constant-envelope signals, and a feedback loop with a processor that receives the combined constant-envelope signals as inputs, analyzes the combined constant-envelope signals to identify pre-equalization inputs that, when applied to the linear pre-equalizers, will equalize the constant-envelope signals, and provide the identified pre-equalization inputs to the linear pre-equalizers, so that the combined constant-envelope signals are equalized relative to each other or to some target.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: October 16, 2018
    Assignee: L3 Technologies Inc.
    Inventors: Janez Jeraj, Johnny M. Harris, David G. Landon, William K. McIntire
  • Publication number: 20180123852
    Abstract: Spatially combining signals may include receiving a number of RF input signals at a number of RF input connectors. At least one of the RF input signals is a variable envelope signal. A variable envelope signal is converted into two or more outphased constant envelope signals. The two or more outphased constant envelope signals are amplified. The amplified outphased constant envelope signals are radiated. At a spatial combiner aperture, the radiated amplified outphased constant envelope signals are combined to create a combined signal. The combined signal is output onto an output RF connector.
    Type: Application
    Filed: October 28, 2016
    Publication date: May 3, 2018
    Inventors: Johnny M. Harris, Kyle D. Holzer, Janez Jeraj
  • Publication number: 20180123854
    Abstract: Spatially combining signals may include receiving a number of RF input signals at a number of RF input connectors. At least one of the RF input signals is a variable envelope signal. A variable envelope signal is converted into two or more outphased constant envelope signals. The two or more outphased constant envelope signals are amplified. The amplified outphased constant envelope signals are radiated. At a spatial combiner aperture, the radiated amplified outphased constant envelope signals are combined to create a combined signal. The combined signal is output onto an output RF connector.
    Type: Application
    Filed: July 28, 2017
    Publication date: May 3, 2018
    Inventors: Johnny M. Harris, Kyle D. Holzer, Janez Jeraj
  • Patent number: 9954706
    Abstract: Spatially combining signals may include receiving a number of RF input signals at a number of RF input connectors. At least one of the RF input signals is a variable envelope signal. A variable envelope signal is converted into two or more outphased constant envelope signals. The two or more outphased constant envelope signals are amplified. The amplified outphased constant envelope signals are radiated. At a spatial combiner aperture, the radiated amplified outphased constant envelope signals are combined to create a combined signal. The combined signal is output onto an output RF connector.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: April 24, 2018
    Assignee: L3 Technologies Inc.
    Inventors: Johnny M. Harris, Kyle D. Holzer, Janez Jeraj
  • Patent number: 9634399
    Abstract: An antenna system can impart orbital angular momentum (OAM) to an incident electromagnetic (EM) signal from a feed antenna. The antenna system can include a partial OAM antenna with a reflective surface that has only part of a full OAM shaped surface. The antenna system can thus reflect the incident EM signal as a partial OAM beam rather than a full OAM beam.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: April 25, 2017
    Assignee: L-3 Communications Corp.
    Inventors: Johnny M. Harris, Osama S. Haddadin, Zachary C. Bagley, Brandon G. Walsh, Jonathan C. Landon
  • Patent number: 9350084
    Abstract: Electromagnetic (EM) feeds can illuminate a standard primary reflective antenna with a plurality of feed beams each having a different orbital angular momentum (OAM) or polarization. The reflective antenna, which can be a non-OAM antenna, can reflect the feed beams and thereby produce a composite OAM transmission comprising each of the feed beams. A non-OAM primary antenna can thus transmit a plurality of OAM feed beams as a composite OAM transmission.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: May 24, 2016
    Assignee: L-3 Communications Corp.
    Inventors: Johnny M. Harris, Osama S. Haddadin, Zachary C. Bagley, Brandon G. Walsh, Jonathan C. Landon
  • Patent number: 9031151
    Abstract: A transmit antenna or antennas can be configured to transmit a composite orbital angular momentum (OAM) radio frequency (RF) beam comprising a plurality of individual OAM RF signals each having a different OAM mode. An array of antennas for receiving and resolving the composite OAM beam into the individual OAM signals can be located entirely within a relatively small sector of a far field pattern of the composite OAM beam. A processing module connected to the antennas of the receive array can resolve the composite OAM beam into its individual OAM signals using angular resolution. The transmit antenna can transmit the individual OAM signals—and thus the composite OAM beam—as full OAM signals or partial-beam OAM signals.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: May 12, 2015
    Assignee: L-3 Communications, Corp.
    Inventors: Johnny M. Harris, Zachary C. Bagley, Brandon G. Walsh, Jonathan C. Landon
  • Patent number: 8396097
    Abstract: In one exemplary embodiment of the invention, a device includes: a first frequency search engine configured to receive input values and determine a frequency of a signal to be within a first frequency band; a second delay component configured to store at least a portion of the plurality of input values; and a second frequency search engine configured to determine the frequency of the signal to be within a second band that is a subset of the first band. The first frequency search engine includes: a shift register configured to store bits of the input values; a combining circuit configured to combine bits of the plurality of input values; a first delay component configured to serially store a plurality of accumulator values; and a feedback circuit configured to add a function of the first delay component output to a next accumulator value to obtain a modified next accumulator value.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: March 12, 2013
    Assignee: L-3 Communications Corp
    Inventors: Thomas R. Giallorenzi, Johnny M. Harris, Matthew A. Lake, Samuel C. Kingston, Myren Iverson
  • Patent number: 8386543
    Abstract: A technique for reducing memory usage during signal processing includes storing least significant portions of a plurality of intermediate results in a first memory. Most significant portions of a subset the plurality of intermediate results are stored in a second memory having a smaller length than the first memory. A data linkage is maintained between the most significant portions and corresponding least significant portions.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: February 26, 2013
    Assignee: L-3 Communications Corp
    Inventors: Johnny M. Harris, Thomas R. Giallorenzi, Matt Lake, Samuel C. Kingston, Randal R. Sylvester
  • Patent number: 8073084
    Abstract: An apparatus and method for correlating a signal over a correlation interval while accommodating spreading code frequency offset is described. In one embodiment, the apparatus includes a plurality of correlators, where each correlator forms a correlation result corresponding to a unique code frequency offset hypothesis. Each correlator selects samples from a tapped delay line at a tap position moved along the delay line at a rate corresponding to the correlator unique code frequency offset hypothesis.
    Type: Grant
    Filed: January 21, 2010
    Date of Patent: December 6, 2011
    Assignee: L-3 Communications, Corp.
    Inventors: Thomas R. Giallorenzi, Johnny M. Harris, Dan M. Griffin, Richard Ertel, Eric K. Hall
  • Patent number: 8036255
    Abstract: A method of transmitting a spread spectrum signal in a single communication session between a transmitter and a receiver, stores a series of N unique waveform designs and a hopping sequence in a transmitter memory. A signal is transmitted to a receiver according to the hopping sequence using the plurality of N unique waveform designs. Preferably, each waveform design is characterized by a unique composite spreading code that is formed by at least some of a plurality of constituent code segments. Alternatively or additionally, the waveform designs may differ by any one or more of code length, symbol or chip timing or phase, frame or burst structure, chip offset, modulation, error control coding, encryption scheme, or scrambling code. A transmitter and receiver are also disclosed, as is the concept of appending chips between symbols to expand the universe of unique spreading codes without incurring an increase in processing gain.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: October 11, 2011
    Assignee: L-3 Communications, Corp.
    Inventors: Johnny M. Harris, Thomas R. Giallorenzi, Randal R. Sylvester, Richard Galindez, Kevin L. Hyer, Larry S. Thomson, Samuel C. Kingston
  • Patent number: 7978747
    Abstract: A method of transmitting a spread spectrum signal in a single communication session between a transmitter and a receiver, stores a series of N unique waveform designs and a hopping sequence in a transmitter memory. A signal is transmitted to a receiver according to the hopping sequence using the plurality of N unique waveform designs. Preferably, each waveform design is characterized by a unique composite spreading code that is formed by at least some of a plurality of constituent code segments. Alternatively or additionally, the waveform designs may differ by any one or more of code length, symbol or chip timing or phase, frame or burst structure, chip offset, modulation, error control coding, encryption scheme, or scrambling code. A transmitter and receiver are also disclosed, as is the concept of appending chips between symbols to expand the universe of unique spreading codes without incurring an increase in processing gain.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: July 12, 2011
    Assignee: L-3 Communications Corp.
    Inventors: Johnny M. Harris, Thomas R. Giallorenzi, Randal R. Sylvester, Richard Galindez, Kevin L. Hyer, Larry S. Thomson, Samuel C. Kingston
  • Patent number: 7861298
    Abstract: A system and method is disclosed for protecting a receiver configured to receive a plurality of contemporaneous spread spectrum signal bursts from a denial of service attack. The method includes the operation of detecting a burst transmission that includes a random burst number. The burst transmission can be analyzed to determine a denial of service statistic based on the random burst number. The burst transmission is processed when the denial of service statistic is within a predetermined threshold.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: December 28, 2010
    Assignee: L-3 Communications, Corp.
    Inventors: Thomas R. Giallorenzi, Johnny M. Harris, Sam Kingston, Robert A. Wright, Larry Thomson
  • Patent number: 7760697
    Abstract: A first node seeking entry into a secure spread spectrum communications network sends a discovery burst at a low rate, and sends traffic bursts at a higher rate to exchange data rate for range. A receiving node receives discovery bursts via an omni-directional link and transmits and receives traffic bursts via directional links. As a node within the network detects a fading signal, it transmits a discovery burst at low rate on both its uplink and downlink channels. Other nodes may reply via the original uplink channel, and the fading node updates a list of candidate nodes through which it can relay through the network to its intended recipient by reversing the link direction of its original uplink and original downlink channels.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: July 20, 2010
    Assignee: L-3 Communications Corporation
    Inventors: Thomas R. Giallorenzi, Johnny M. Harris, Dan M. Griffin, Richard B. Ertel, Eric K. Hall
  • Patent number: 7701996
    Abstract: The present invention concerns methods and apparatus for use in a spread spectrum communications system. In particular, in a method of the present invention information useful for acquiring a target signal is selected; the information is incorporated in an acquisition signal; the acquisition signal is transmitted; the target signal is spread with a spreading code; and the target signal is transmitted. At a receiving node, the acquisition information useful for acquiring the target signal is recovered from the acquisition signal and used to acquire the target signal. Apparatus in accordance with the present invention implement methods of the present invention. The methods and apparatus of the present invention can be used in node- and network-discovery situations.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: April 20, 2010
    Assignee: L-3 Communications Corporation
    Inventors: Thomas R. Giallorenzi, Johnny M. Harris, Dan M. Griffen, Richard B. Ertel, Eric K. Hall
  • Patent number: 7672415
    Abstract: A system and method for detecting a presence and frequency offset of a spread spectrum radio frequency signal is disclosed. The method comprises receiving the spread spectrum radio signal. The signal can be sampled to form a plurality of signal samples. Each signal sample can be multiplied by a complex conjugate of a proximate signal sample to form a plurality of signal sample pairs. The signal sample pairs can be summed over a predetermined dwell time period to form a data vector having a magnitude and angle offset to enable detection of the signal and to enable a frequency offset between the spread spectrum radio frequency signal and a receiver frequency reference to be determined.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: March 2, 2010
    Assignee: L-3 Communications, Corp.
    Inventors: Thomas R. Giallorenzi, Johnny M. Harris, Dan M. Griffin, Sam Kingston
  • Patent number: 7664164
    Abstract: An apparatus and method for correlating a signal over a correlation interval while accommodating spreading code frequency offset is described. In one embodiment, the apparatus includes a plurality of correlators, where each correlator forms a correlation result corresponding to a unique code frequency offset hypothesis. Each correlator selects samples from a tapped delay line at a tap position moved along the delay line at a rate corresponding to the correlator unique code frequency offset hypothesis.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: February 16, 2010
    Assignee: L-3 Communications, Corp.
    Inventors: Thomas R. Giallorenzi, Johnny M. Harris, Dan M. Griffin, Richard Ertel, Eric K. Hall
  • Patent number: 7643537
    Abstract: A method and apparatus for detecting a spread spectrum signal is described. Signals can be detected using correlation techniques. When a signal is detected, declaring of signal presence is inhibited for offsets of signal parameters from the parameters of the detected signal, where the offset corresponds to a known sidelobe of the spreading code. This helps to reduce false detections caused by sidelobes of the spreading code.
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: January 5, 2010
    Assignee: L-3 Communications, Corp.
    Inventors: Thomas R. Giallorenzi, Matt Lake, Samuel C. Kingston, Johnny M. Harris