Patents by Inventor Masanobu Yukumatsu

Masanobu Yukumatsu 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).

  • Planar array antenna and phase-comparison monopulse radar system
    Patent number: 5815112
    Abstract: A planar array antenna comprises a plurality of antenna elements disposed in a predetermined matrix pattern. Feeders extend from a feed to the antenna elements. High-frequency switches cooperatively open or close the feeders connected to antenna elements of at least one row of the matrix pattern located at both a right-end and a left-end regions of an antenna surface. Switching signals are supplied to the high-frequency switches from switching terminals for alternately activating the associated antenna elements, thereby providing two time-divisional array antennas offset in position by a distance corresponding to the width of at least one row of the antenna elements controlled.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: September 29, 1998
    Assignee: Denso Corporation
    Inventors: Kunihiko Sasaki, Masanobu Yukumatsu, Toshiya Saito, Hideo Matsuki, Hiroshi Hazumi