Patents Assigned to NTT Mobile Communications Network Incorporation
  • Antenna devices having double-resonance characteristics
    Patent number: 5568155
    Abstract: Double-resonance characteristics are obtained with a small and simple construction by arranging a conductive planar radiation element approximately parallel to a conductive ground plane with an intermediary insulator, connecting a feed line to these, and further connecting a parasitic line to a separate contact point at a distance from the contact point of the feed line.
    Type: Grant
    Filed: November 7, 1994
    Date of Patent: October 22, 1996
    Assignee: NTT Mobile Communications Network Incorporation
    Inventors: Koichi Tsunekawa, Seiji Hagiwara