Patents by Inventor Guillermo V. Andrews

Guillermo V. Andrews 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).

  • Method and apparatus for generation of arbitrary mono-cycle waveforms
    Patent number: 7209937
    Abstract: A waveform generator digitally synthesizes a waveform having a plurality of successive portions that can each be as short as one mono-cycle of the waveform, or a part of one mono-cycle. The waveform generator changes at least one of a frequency, a phase and an amplitude of the waveform between each successive pair of the portions thereof. A method includes digitally synthesizing a waveform having a plurality of successive portions that can each be as short as one mono-cycle of the waveform, or a part of one mono-cycle, including changing at least one of a frequency, a phase and an amplitude of the waveform between each successive pair of the portions thereof.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: April 24, 2007
    Assignee: Raytheon Company
    Inventor: Guillermo V. Andrews
  • Method and apparatus for a digital phased array antenna
    Patent number: 6693590
    Abstract: A digital phased array antenna comprises a plurality of antenna elements, each element receiving an incoming signal. An analog-to-digital converter is coupled to at least one of the antenna elements to convert the incoming signal to a multi-bit digital signal. A demodulator or de-ramp circuit is coupled to the analog-to-digital converter to reduce the bandwidth of the multi-bit signal.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: February 17, 2004
    Assignee: Raytheon Company
    Inventors: James R. Toplicar, Guillermo V. Andrews, Gary A. Frazier, Krishna K. Agarwal, Paul E. Doucette