Patents by Inventor William F. Call

William F. Call 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 tri-band feed with pseudo-monopulse tracking
    Patent number: 8537068
    Abstract: Methods and apparatus for a feed assembly for a reflector antenna including an aperture common to low, mid, and high frequency bands, a polyrod design to launch signals in the mid and high frequency bands, a horn to launch signals in the low frequency band, a co-located phase center for launching signals in the low, mid, and high frequency bands, and a low-band monopulse array located on a surface about the aperture to track a satellite.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: September 17, 2013
    Assignee: Raytheon Company
    Inventors: Larry C. Martin, Yueh-Chi Chang, John J. Hanlin, William F. Call
  • METHOD AND APPARATUS FOR TRI-BAND FEED WITH PSEUDO-MONOPULSE TRACKING
    Publication number: 20110181479
    Abstract: Methods and apparatus for a feed assembly for a reflector antenna including an aperture common to low, mid, and high frequency bands, a polyrod design to launch signals in the mid and high frequency bands, a horn to launch signals in the low frequency band, a co-located phase center for launching signals in the low, mid, and high frequency bands, and a low-band monopulse array located on a surface about the aperture to track a satellite.
    Type: Application
    Filed: January 26, 2010
    Publication date: July 28, 2011
    Applicant: Raytheon Company
    Inventors: Larry C. Martin, Yueh-Chi Chang, John J. Hanlin, William F. Call
  • Orthogonal mode tee
    Patent number: 4849720
    Abstract: An orthogonal mode tee to use at microwave frequencies and having a junction for three ports, two of the ports propagating the TE.sub.10 mode and the common port propagating the TE.sub.11 mode.
    Type: Grant
    Filed: May 22, 1986
    Date of Patent: July 18, 1989
    Assignee: Neico Microwave Company
    Inventor: William F. Call
  • Half wave plate
    Patent number: 4841260
    Abstract: A microwave device including a half wave plate for a microwave power combiner, attenuator or variable coupler divider having a circular waveguide portion and a pair of cavities disposed opposite to one another and each coupled to a plurality of slots formed in a wall between said cavities and said circular waveguide. The half wave plate is used to obtain a phase shift in the signals provided to one end of the circular waveguide and is preferably mounted for rotary motion about the center axis of the circular waveguide.
    Type: Grant
    Filed: January 14, 1987
    Date of Patent: June 20, 1989
    Assignee: Epsco, Incorporated
    Inventor: William F. Call