Patents Assigned to Radio Design Innovation TJ AB
  • Patent number: 6161023
    Abstract: An access method using a rotating lobe in a telecommunication system that has antennas that support a number of horizontal lobes for communication between a base station and a mobile station. Signals to and from the antennas are modulated by a lobe shaping unit to bring the lobe to rotate in a horizontal plane, that the mobile station synchronizes with the base station transmission lobe by means of an internal clock, and after achieving synchronization goes into a sleep mode. The sleep mode has a number of wake up levels, wherein the mobile station in the deepest level listens for wake up calls and in the highest level listens for the proper message.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: December 12, 2000
    Assignee: Radio Design Innovation TJ AB
    Inventors: Torbjorn Johnson, Bo G. Magnusson
  • Patent number: 6088002
    Abstract: An antenna system including a support structure and an antenna assembly having an open grid reflector structure in a closed ring and dipole elements. The antenna assembly includes a number of antenna panels, each including a number of the dipole elements, the closed ring is self-supporting and connected to the support structure by radial beams and struts, and the antenna panels are interconnected by a variable angle connection.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: July 11, 2000
    Assignee: Radio Design Innovation TJ AB
    Inventors: Torbjorn Johnson, Jan Berglund