Patents Assigned to Marconi Applied Technologies, Limited
  • Switching arrangement
    Patent number: 6914350
    Abstract: A solid state switching arrangement includes a transmission line which acts as a primary transformer loop and acts with secondary windings carried by switching modules to apply triggering signals to the switches. The arrangement may include greater than sixty modules.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: July 5, 2005
    Assignee: Marconi Applied Technologies Limited
    Inventor: Robert Richardson
  • Multi-stage collector having electrode stages isolated by a distributed bypass capacitor
    Patent number: 6879208
    Abstract: In a multistage collector used in a linear beam tube such as an IOT or klystron, electrode stages are separated by ceramic rings having metallised surfaces to provide distributed bypass capacitors. This eliminates or reduces leakage or any radio frequency energy from the interior of the collector to the outside.
    Type: Grant
    Filed: February 5, 2001
    Date of Patent: April 12, 2005
    Assignee: Marconi Applied Technologies, Limited
    Inventors: Robert Wilson, Steven Bardell, Timothy A Crompton
  • Tubular capacitor for use in an electron beam tube
    Patent number: 6781313
    Abstract: A capacitor includes a conductive tube, covered by insulating material and a layer of conductive material located at the central part of the tube. The geometry presents a low inherent inductance and a continuous, distributed conductance. The capacitor may be used as a bypass capacitor in an IOT amplifier to reduce stray and leakage high frequency radiation, in one amplifier being located within the inner wall of an annular input cavity.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: August 24, 2004
    Assignee: Marconi Applied Technologies Limited
    Inventor: Steven Aiken
  • Power limiting apparatus
    Publication number: 20030038687
    Abstract: Power limiting apparatus for use in a sensitive receiving system includes a gas-filled coaxial hermetically sealed line. The inner conductor includes a central region of reduced diameter connected to a metallisation layer between the inner and outer conductors. An annular gap electrically isolates the outer regions of the metallisation. When excess energy enters the device, gas breakdown occurs across the gap to produce a plasma which reflects the excess energy and prevents it travelling onward to sensitive receiver stages.
    Type: Application
    Filed: August 7, 2002
    Publication date: February 27, 2003
    Applicant: Marconi Applied Technologies Limited
    Inventors: Peter Hackney, David John Mellor
  • Switching arrangements
    Patent number: 6396332
    Abstract: In a switching arrangement for applying a pulse to a load, for example a magnetron, a plurality of FET modules are stacked along the longitudinal axis and surrounded by a housing enclosing four capacitors. The capacitor means provides a current return path for current applied via the FET switches of the modules the coaxial current cancelling construction of the arrangement results in low circuiting conductance. The capacitance may be sufficiently large to provide electrostatic screening.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: May 28, 2002
    Assignee: Marconi Applied Technologies, Limited
    Inventor: Robert Richardson