Patents Assigned to Sky Eye Railway Services International Inc.
  • Cavity-backed slot antenna resonating at two different frequencies
    Patent number: 6150989
    Abstract: A cavity-backed slot antenna constituted by a housing constructed of conductive material. The housing forms a cavity. An elongated primary slot of a given length is formed in one of the walls of the housing. A secondary slot of a given length is formed in an adjacent wall. Diodes are secured across the primary slot at a pre-determined location. An r.f. transmission line is electrically coupled to the conductive sheet across side edges of said primary slot for transmitting and receiving r.f. signals.
    Type: Grant
    Filed: July 6, 1999
    Date of Patent: November 21, 2000
    Assignee: Sky Eye Railway Services International Inc.
    Inventor: Yvon C. Aubry