Patents by Inventor Colin J. O'Brien

Colin J. O'Brien 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).

  • Multicarrier and frequency hopped radar waveform generator using efficient digital synthesis
    Patent number: 10921423
    Abstract: A radar pulse generator includes a multiplexer, a polyphase synthesizer, a first signal channel and a second signal channel. The multiplexer has a baseband radar pulse input, a multiplexer control input, a first channel output and a second channel output. The baseband radar pulse input signal is a single channel baseband radar pulse signal. The multiplexer control input signal selects one of the group consisting of the first channel output and the second channel output. The polyphase synthesizer synthesizes the first channel output signal, synthesizes the second channel output signal and outputs a desired radar pulse signal based on the synthesized first channel output signal and the synthesized second channel output signal. The first signal channel provides the first channel output signal from the first channel output to the polyphase synthesizer. The second signal channel provides the second channel output signal from the second channel output to the polyphase synthesizer.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: February 16, 2021
    Assignee: United States of America as Represented by the Secretary of the Navy
    Inventors: Michael P. Civerolo, Nicholas T. Johnson, Nicholas A. Lumsden, Colin J. O'Brien
  • Multicarrier and Frequency Hopped Radar Waveform Generator using Efficient Digital Synthesis
    Publication number: 20200033441
    Abstract: A radar pulse generator includes a multiplexer, a polyphase synthesizer, a first signal channel and a second signal channel. The multiplexer has a baseband radar pulse input, a multiplexer control input, a first channel output and a second channel output. The baseband radar pulse input signal is a single channel baseband radar pulse signal. The multiplexer control input signal selects one of the group consisting of the first channel output and the second channel output. The polyphase synthesizer synthesizes the first channel output signal, synthesizes the second channel output signal and outputs a desired radar pulse signal based on the synthesized first channel output signal and the synthesized second channel output signal. The first signal channel provides the first channel output signal from the first channel output to the polyphase synthesizer. The second signal channel provides the second channel output signal from the second channel output to the polyphase synthesizer.
    Type: Application
    Filed: July 25, 2018
    Publication date: January 30, 2020
    Applicant: United States of America as represented by Secretary of the Navy
    Inventors: Michael P. Civerolo, Nicholas T. Johnson, Nicholas A. Lumsden, Colin J. O'Brien