Patents by Inventor Ricardo H. Paredes

Ricardo H. Paredes 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).

  • Tunable aperture for multiple spectrums
    Patent number: 11289808
    Abstract: Methods and apparatus for a tunable dual spectrum antenna aperture including a RF antenna having first and second portions, wherein the first portion comprises a photoconductor material having a conductive state and a non-conductive state, and an IR sensor to detect IR energy. The state of the first portion determines a size of the RF antenna.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: March 29, 2022
    Assignee: Raytheon Company
    Inventors: Timothy R. Holzheimer, Ricardo H. Paredes
  • TUNABLE APERTURE FOR MULTIPLE SPECTRUMS
    Publication number: 20210126364
    Abstract: Methods and apparatus for a tunable dual spectrum antenna aperture including a RF antenna having first and second portions, wherein the first portion comprises a photoconductor material having a conductive state and a non-conductive state, and an IR sensor to detect IR energy. The state of the first portion determines a size of the RF antenna.
    Type: Application
    Filed: October 23, 2019
    Publication date: April 29, 2021
    Applicant: Raytheon Company
    Inventors: Timothy R. Holzheimer, Ricardo H. Paredes
  • Optical beamforming photonic integrated circuit (PIC)
    Patent number: 10887024
    Abstract: Described embodiments provide methods and apparatus for processing radio-frequency (RF) signals using a photonic integrated circuit (PIC). The PIC comprises a substrate having integrated lasers and signal paths. Each signal path is configured to receive a single laser signal from the lasers. Each signal path comprises an electro-optic modulator (EOM), an optical butler matrix, and a photodetector. The EOM is communicatively coupled to the one or more lasers and is configured to generate an output optical signal by modulating the single laser signal based on an input radio frequency (RF) signal. The optical butler matrix is communicatively coupled to each of the one or more signal paths and is configured to generate an optical beamformed signal from the output optical signal. The photodetector is configured to convert the optical beamformed signal to an output RF signal.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: January 5, 2021
    Assignee: Raytheon Company
    Inventors: Timothy R. Holzheimer, Ricardo H. Paredes
  • OPTICAL BEAMFORMING PHOTONIC INTEGRATED CIRCUIT (PIC)
    Publication number: 20200112378
    Abstract: Described embodiments provide methods and apparatus for processing radio-frequency (RF) signals using a photonic integrated circuit (PIC). The PIC comprises a substrate having integrated lasers and signal paths. Each signal path is configured to receive a single laser signal from the lasers. Each signal path comprises an electro-optic modulator (EOM), an optical butler matrix, and a photodetector. The EOM is communicatively coupled to the one or more lasers and is configured to generate an output optical signal by modulating the single laser signal based on an input radio frequency (RF) signal. The optical butler matrix is communicatively coupled to each of the one or more signal paths and is configured to generate an optical beamformed signal from the output optical signal. The photodetector is configured to convert the optical beamformed signal to an output RF signal.
    Type: Application
    Filed: October 3, 2018
    Publication date: April 9, 2020
    Applicant: Raytheon Company
    Inventors: Timothy R. Holzheimer, Ricardo H. Paredes