Patents Assigned to Fernau Avionics Ltd
  • Secondary surveillance radar
    Patent number: 5920277
    Abstract: A secondary surveillance radar e.g. a Mode-S radar, has a controllable power source in which first and second in-phase r.f. signals are derived from a source (6) by a power splitter (11), and a phase shifter (32) adjusts selectively the relative phase of the signals, so that after amplification by main amplifiers (21, 22) and combination by power comber (23), the resultant power level can be controlled by the phase shift produced by the phase shifter (32).
    Type: Grant
    Filed: February 9, 1998
    Date of Patent: July 6, 1999
    Assignee: Fernau Avionics Ltd
    Inventors: Jeremy Le Neve Foster, Geoffrey Morris