Patents by Inventor Sam J. Waldbaum

Sam J. Waldbaum 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: 8258866
    Abstract: Various aspects of the disclosure provide high power and high efficiency power amplifier systems that can be integrated on a chip using integrated circuit processes such as a standard CMOS and SiGe process. A power amplifier system is disclosed according to one aspect. The power amplifier system comprises a first power amplifier, a Wilkinson power splitter, second-stage amplifiers, and a Wilkinson power combiner. The first power amplifier pre-amplifies an RF input signal. The Wilkinson power splitter then splits the power of the amplified RF signal outputted by the first power amplifier among the second-stage amplifiers. Each of the second-stage amplifiers amplifies the respective RF signal from the Wilkinson power splitter. The Wilkinson power combiner then sums the powers of the amplified RF signals outputted by the second-stage amplifiers and outputs the resulting combined RF signal.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: September 4, 2012
    Assignee: Lockheed Martin Corporation
    Inventors: Nicholas D. Saiz, Sam J. Waldbaum
  • Publication number: 20120105149
    Abstract: Various aspects of the disclosure provide high power and high efficiency power amplifier systems that can be integrated on a chip using integrated circuit processes such as a standard CMOS and SiGe process. A power amplifier system is disclosed according to one aspect. The power amplifier system comprises a first power amplifier, a Wilkinson power splitter, second-stage amplifiers, and a Wilkinson power combiner. The first power amplifier pre-amplifies an RF input signal. The Wilkinson power splitter then splits the power of the amplified RF signal outputted by the first power amplifier among the second-stage amplifiers. Each of the second-stage amplifiers amplifies the respective RF signal from the Wilkinson power splitter. The Wilkinson power combiner then sums the powers of the amplified RF signals outputted by the second-stage amplifiers and outputs the resulting combined RF signal.
    Type: Application
    Filed: November 3, 2010
    Publication date: May 3, 2012
    Applicant: LOCKHEED MARTIN CORPORATION
    Inventors: Nicholas D. Saiz, Sam J. Waldbaum