Patents by Inventor Paul T. Hartin

Paul T. Hartin 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: 20230089039
    Abstract: A synthesizer including a controller configured to receive a first signal. A digital-to-analog converter (DAC) is coupled to the controller and is configured to generate a voltage bias based on the first signal. The voltage bias corresponds to a target resonant frequency. A semiconductor laser is coupled to the DAC and is configured to receive a second signal tone. The semiconductor laser generates a plurality of tone signals having octave multiples of a base sub-harmonic tone of the second signal tone.
    Type: Application
    Filed: September 20, 2022
    Publication date: March 23, 2023
    Applicant: Raytheon Company
    Inventors: Paul T. Hartin, Kalin Spariosu, Michael R. Patrizi
  • Publication number: 20220406680
    Abstract: A cooling device for integrated circuits. The device includes: a plurality TEC cooling cells arranged in an array, wherein each of the cells includes a controller coupled to at least one TEC device; and a single power connector that provides power to all the cells in the array. The controller of each cell in the array is operable to control the at least one TEC it is coupled to with power received from the single power connector.
    Type: Application
    Filed: June 21, 2021
    Publication date: December 22, 2022
    Inventors: Paul T. Hartin, Kalin Spariosu, Thomas T. Leise, David A. Vasquez, Michael R. Patrizi
  • Publication number: 20220393429
    Abstract: A synthesizer includes a first resonator mirror, a second resonator mirror, and a gain medium disposed within a laser resonator cavity defined by the first resonator mirror and the second resonator mirror. The synthesizer includes a saturable absorber operationally coupled to the gain medium and having active control such that the saturable absorber is configured to generate a waveform via an injection locking signal to create a mode locking effect, the waveform having a frequency comb defined by dimensions of the gain medium. The synthesizer also includes a crystal electro-optical modulator disposed within the laser resonator cavity. The waveform passes through the modulator to impinge on a photodiode to output an emission RF waveform. Changing the voltage applied to the modulator changes the index of refraction of the modulator, altering an optical path length of the laser resonator cavity to adjust a frequency of the emission RF waveform.
    Type: Application
    Filed: May 19, 2022
    Publication date: December 8, 2022
    Applicant: Raytheon Company
    Inventors: Kalin Spariosu, Paul T. Hartin, Michael R. Patrizi