Patents by Inventor John William Archer

John William Archer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Real-time, cross-correlating millimetre-wave imaging system
    Publication number: 20090079619
    Abstract: A method and apparatus are disclosed for forming an image from millimetre waves. A field of view scanned using two geometrically orthogonal, intersecting copolarized fan beams (110, 120) to receive millimetre wave radiation. The received millimetre wave radiation from said fan beams are then cross-correlated (250, 650). Also, a method and antenna (400, 610) for receiving millimetre wave radiation are disclosed. The antenna includes first and second fan beam antennas (410, 420) for receiving millimetre wave radiation and a filter (430, 440) for rotating polarization of incident millimetre wave radiation through 90 degrees received by the second fan beam antenna (410). The respective first and second beams (110, 120) intersect and are co-polarized and geometrically orthogonal to each other.
    Type: Application
    Filed: May 29, 2008
    Publication date: March 26, 2009
    Inventors: John William Archer, Oya Sevimli, Gooffron James
  • Real-time, cross-correlating millimeter wave imaging system using dual pill-box antennas
    Patent number: 7385552
    Abstract: A method and apparatus are disclosed for forming an image from millimeter waves. A field of view scanned using two geometrically orthogonal, intersecting copolarized fan beams (110, 120) to receive millimeter wave radiation. The received millimeter wave radiation from said fan beams are then cross-correlated (250, 650). Also, a method and antenna (400, 610) for receiving millimeter wave radiation are disclosed. The antenna includes first and second fan beam antennas (410, 420) for receiving millimeter wave radiation and a filter (430, 440) for rotating polarization of incident millimeter wave radiation through 90 degrees received by the second fan beam antenna (410). The respective first and second beams (110, 120) intersect and are co-polarized and geometrically orthogonal to each other.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: June 10, 2008
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventors: John William Archer, Oya Sevimli, Geoffrey James
  • Bidirectional amplifier
    Patent number: 5821813
    Abstract: A bidirectional amplifier has first and second two-terminal ports each capable of acting as either an input or an output for said amplifier. A field effect type transistor is connected in common gate mode with the common (or grounded) terminal of each of said ports being at least AC connected with the gate of said transistor, and the source and drain of said transistor being respectively connected to a corresponding one of the other terminals of said ports via an impedance matching device.
    Type: Grant
    Filed: May 15, 1996
    Date of Patent: October 13, 1998
    Assignee: Commonwealth Scientific & Industrial Research Organisation
    Inventors: Robert Alexander Batchelor, John William Archer