Patents by Inventor Robert P. Levreault

Robert P. Levreault 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: 4575861
    Abstract: An intermediate frequency (IF) amplifier having two separate signal paths through single amplification hardware. A radio frequency (RF) signal is separated into two identical signals which are separately processed to provide code and carrier signals. These signals are combined in quadrature and amplified together in the same IF strip, followed by two channel quadrature detection. The IF amplifier of the present invention is typically used in signal processing, and in particular, in spread spectrum receivers. The quadrature multiplexed IF channel affords uniform gain, bandwidth, phase and delay characteristics between the two separate code and carrier signal paths.
    Type: Grant
    Filed: April 8, 1983
    Date of Patent: March 11, 1986
    Assignee: The Charles Stark Draper Laboratory
    Inventor: Robert P. Levreault