Patents by Inventor Jerry Lopez

Jerry Lopez 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: 12284064
    Abstract: A transmitter system includes a mapper that maps data bits and power information to N subcarriers. A first-level modulator converts the mapped information of subcarriers into subcarrier specifications, defining their amplitude and phase (or real and imaginary amplitudes). An orthogonal subcarrier generator, for example an IFFT, calculates N successive values of baseband real and imaginary signals. A second-level modulator multiplies the baseband signals with in-phase and quadrature intermediate frequency (IF) components to generate an orthogonal IF signal. A single-sideband (SSB) prep unit may remove the lower or upper sideband. A beam former modifies the phase and/or the amplitude of the orthogonal IF signal for transmission through multiple sub-antennas in a phased array antenna.
    Type: Grant
    Filed: October 7, 2024
    Date of Patent: April 22, 2025
    Assignee: NoiseFigure Research, Inc
    Inventors: Carlos Rangel-Ruiz, Jerry Lopez, Alexander William Boothby
  • Patent number: 8558625
    Abstract: A technique for enhancing the frequency tuning range for monolithic RF source generation using fully-integrated coupled Voltage-Controlled-Oscillator (VCO) arrays that contain an odd number of VCOs. Fully-monolithic SiGe VCO arrays using on-chip inductor and varactor with on-chip bias current sources have been carefully designed and simulated in IBM 7HP 0.18 ?m BiCMOS technology and taped out for fabrication. The SPICE simulated frequency and phase tuning of the 1-D VCO×5 array is dependent on the edge VCOs termination impedance, the tuning voltages, and the VCO coupling strength. The simulated data suggests that the enhanced tuning range and beam steering can be accomplished using coupled-VCO arrays without needing complex and bulky phase shifters. This design technique imposes no apparent phase noise penalty but can provide simulated RF frequency tuning range of ˜40% and also ˜+/?25° beam steering for active antennas applications.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: October 15, 2013
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Yu-Chun Donald Lie, Brian Meadows, Joseph Neff, John Cothern, Jerry Lopez