Patents by Inventor Jeffrey O. Coleman

Jeffrey O. Coleman 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: 9806430
    Abstract: An antenna system having a transmit assembly with a first set of antenna elements for transmitting signals. Each antenna element in this first set may be disposed from a respective adjacent antenna element by a predetermined azimuthal increment and by a predetermined altitudinal increment. The antenna system further includes a receive assembly having a second set of antenna elements for receiving signals. Each antenna element in this second set may be disposed from a respective adjacent antenna element by a predetermined azimuthal increment and by a predetermined altitudinal increment. The predetermined azimuthal and altitudinal increments of the first set may be substantially similar to the predetermined azimuthal and altitudinal increments, respectively, of the second set.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: October 31, 2017
    Assignee: Envisioneering, Inc.
    Inventors: Jeffrey O. Coleman, William M. Dorsey, Mark G. Parent, Gary E. Hoover, Philip G. Girardi
  • Patent number: 4956834
    Abstract: A transmitter includes a coupler having N input prots and N output ports, N being the number of input signals to be multiplexed. The coupler has a unitary coupling matrix, and receives N input signals at its input ports to produce N intermediate transmitting signals at its output ports. The intermediate transmitter signals are subjected to different time delays and then combined into a composite optical signal launched onto an optical bus. At the receiver, the composite signal is divided into N intermediate receiver signals, the intermediate receiver signals are time delayed in the same manner as in the transmitter, and then coupled to input ports of a receiver coupler that has a coupling matrix equal to the transpose of the transmitter's coupling matrix. The output port signals may then be detected and processed to decouple the N data channels.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: September 11, 1990
    Assignee: The Boeing Company
    Inventor: Jeffrey O. Coleman
  • Patent number: 4882775
    Abstract: An improved demodulator and demodulation method usable in a coherence multiplexed, optical data transmission system. The demodulator comprises an interferometer and a signal processor. The interferometer has first and second arms having first ends coupled to receive radiation from an optical bus, and second ends connected to the signal processor. The path length difference between the arms is selected to approximately match that of a corresponding modulator, to within the coherence length of the optical carrier. The signal processor processes the optical signals emerging from the arms in combination, to produce a pair of electrical ouput signals. Linearly independent pairs of electrical ouput signals are produced for any two modulation signals that do not produce modulator optical path length differences that differ from one another by an integral multiple of a half wavelength of the optical carrier.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: November 21, 1989
    Assignee: The Boeing Company
    Inventor: Jeffrey O. Coleman
  • Patent number: 4860279
    Abstract: A coherence multiplexed optical signal transmission system in which modulation is introduced into the system by modulating the optical carrier or source signal, rather than by modulating the optical path length of an interferometer arm. The system comprises a transmitter and receiver interconnected by an optical bus. The transmitter comprises a plurality of transmitter interferometers, each transmitter interferometer including a modulated optical source. The transmitter interferometers have optical path length differences that are greater than the coherence length of the associated source, and that differ from one another by an amount greater than the source coherence length. The receiver comprises a plurality of receiver interferometers having path length differences matching those of the transmitter interferometers. Multiplexing and demultiplexing means are provided for coupling optical radiation between the bus and the interferometers.
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: August 22, 1989
    Assignee: The Boeing Company
    Inventors: R. Aaron Falk, Jeffrey O. Coleman