Patents by Inventor Lawrence T. Uchida

Lawrence T. Uchida 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 OF PREDICTING THE FAR FIELD PATTERN OF A SLOTTED PLANAR ARRAY AT EXTREME ANGLES USING PLANAR NEAR FIELD DATA
    Publication number: 20020140600
    Abstract: The far field pattern of a slotted planar array antenna is predicted at extreme angles using an improved prediction method. The prediction method acquires planar near field data for a slotted planar array antenna and then back-transforms the planar near field data to the aperture of the antenna corresponding to X position, Y position, amplitude and phase data for the array antenna. An interpolation process calculates the excitation coefficient (phase and amplitude) of each slot element of the antenna using the back-transformed data. The excitation coefficients are then processed using an array factor program to predict the far field pattern of the antenna.
    Type: Application
    Filed: March 29, 2001
    Publication date: October 3, 2002
    Inventors: John P. Utley, Lawrence T. Uchida, Paul C. Seo, Matthew J. Sullivan, Richard A. Stevens
  • Method of predicting the far field pattern of a slotted planar array at extreme angles using planar near field data
    Patent number: 6456235
    Abstract: The far field pattern of a slotted planar array antenna is predicted at extreme angles using an improved prediction method. The prediction method acquires planar near field data for a slotted planar array antenna and then back-transforms the planar near field data to the aperture of the antenna corresponding to X position, Y position, amplitude and phase data for the array antenna. An interpolation process calculates the excitation coefficient (phase and amplitude) of each slot element of the antenna using the back-transformed data. The excitation coefficients are then processed using an array factor program to predict the far field pattern of the antenna.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: September 24, 2002
    Assignee: Raytheon Company
    Inventors: John P. Utley, Lawrence T. Uchida, Paul C. Seo, Matthew J. Sullivan, Richard A. Stevens