Patents by Inventor David C. Jenn

David C. Jenn 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).

  • Publication number: 20200011985
    Abstract: Disclosed is a method, system, and apparatus for transmitting a randomly phase-coded CW waveform in a manner that suppresses signal leakage and enables the recovery of polyphase subcodes advantageous for the purposes of correlation and pulse compression. The CW system transmits and receives a random waveform while concurrently providing properly delayed phase conversion parameters (?i??i) from a corrections generator to various range gates. Each range gate processes any echo returns using a most recent phase conversion parameters (?k??k) provided and correlation of the resulting echo subcodes ?R produce either target indications or noise signals, depending on the most recent phase conversion parameters (?k??k) provided to the range gate. The system may transmit the randomly phase-coded CW waveform while recovering any phase code {?1, ?2, . . . ?N} that lends itself to advantageous pulse compressions.
    Type: Application
    Filed: December 4, 2017
    Publication date: January 9, 2020
    Inventors: David C. Jenn, Phillip E. Pace, Ric A. Romero
  • Patent number: 10509117
    Abstract: Disclosed is a method, system, and apparatus for transmitting a randomly phase-coded CW waveform in a manner that suppresses signal leakage and enables the recovery of polyphase subcodes advantageous for the purposes of correlation and pulse compression. The CW system transmits and receives a random waveform while concurrently providing properly delayed phase conversion parameters (?i??i) from a corrections generator to various range gates. Each range gate processes any echo returns using a most recent phase conversion parameters (?k??k) provided and correlation of the resulting echo subcodes ?R produce either target indications or noise signals, depending on the most recent phase conversion parameters (?k??k) provided to the range gate. The system may transmit the randomly phase-coded CW waveform while recovering any phase code {?1, ?2, . . . ?N} that lends itself to advantageous pulse compressions.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: December 17, 2019
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: David C. Jenn, Phillip E. Pace, Ric A. Romero
  • Patent number: 8878742
    Abstract: Embodiments in accordance with the invention include a linearly polarized dipole antenna with an unbalanced microstrip feed line. More specifically, embodiments in accordance with the invention utilize a fed dipole connected to a microstrip feed line, and separated a gap distance from a parasitic dipole not connected to the microstrip feed line. When an electrical signal is input to the microstrip feed line, the microstrip feed line creates a current flow in the fed dipole which induces a nearly equal current on the parasitic dipole that is out of phase. The result is a current flow, I, in the same direction in both fed and parasitic dipoles allowing for efficient radiation of the linearly polarized dipole antenna. Embodiments in accordance with the invention eliminate the need for a balun circuit thereby reducing the size, complexity and feed loss of the feed circuit. Embodiments in accordance with the invention are effective for dipoles with relatively small ground planes.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: November 4, 2014
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: David C. Jenn