Patents by Inventor John J. Hanlin

John J. Hanlin 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
  • Radio frequency antenna feed structures having a coaxial waveguide and asymmetric septum
    Patent number: 6724277
    Abstract: A waveguide feed structure having a coaxial transmission line. A conductive, planar septum is disposed in, and along a diameter of, the transmission line. A feed port is electrically coupled to the transmission line. The septum has a rear portion disposed proximate the feed port, such rear portion of the septum extending between the inner conductor and the outer conductor. The feed port and the rear portion of the septum are arranged to establish an electric field in the transmission line between the inner conductor and the outer conductor with a component substantially TE11 mode along a direction perpendicular to the planar septum. A forward portion of the septum is asymmetrically disposed with respect to said diameter in order to provide a gap between the inner conductor and the outer conductor, such gap establishing an electric field component within the transmission line having a TE11 component along said diameter of the transmission line parallel to the plane of the septum.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: April 20, 2004
    Assignee: Raytheon Company
    Inventors: Richard H. Holden, Fernando Beltran, John J. Hanlin
  • Radio frequency antenna feed structures
    Publication number: 20020097111
    Abstract: A waveguide feed structure having a coaxial transmission line. A conductive, planar septum is disposed in, and along a diameter of, the transmission line. A feed port is electrically coupled to the transmission line. The septum has a rear portion disposed proximate the feed port, such rear portion of the septum extending between the inner conductor and the outer conductor. The feed port and the rear portion of the septum are arranged to establish an electric field in the transmission line between the inner conductor and the outer conductor with a component substantially TE11 mode along a direction perpendicular to the planar septum. A forward portion of the septum is asymmetrically disposed with respect to said diameter in order to provide a gap between the inner conductor and the outer conductor, such gap establishing an electric field component within the transmission line having a TE11 component along said diameter of the transmission line parallel to the plane of the septum.
    Type: Application
    Filed: January 24, 2001
    Publication date: July 25, 2002
    Inventors: Richard H. Holden, Fernando Beltran, John J. Hanlin