Patents by Inventor Perry Macdonald

Perry Macdonald 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).

  • Patent number: 7908309
    Abstract: A method of transforming an analog electrical signal into a wavelet transform. The analog electrical signal is input into a transmission line system as a transmission line input signal. A wavelet transform lifting is performed on the transmission line input signal to provide at least a first sum signal and a first difference signal of the transmission line input signal. The sum signal is designated as a first wavelet transform approximation signal and the difference signal is designated as a first wavelet transform detail signal.
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: March 15, 2011
    Assignee: HRL Laboratories, LLC
    Inventor: Perry Macdonald
  • Patent number: 7138937
    Abstract: A circulator comprises first and second couplers. The first and second couplers are coupled by first and second transmission lines. First and second magnetic fields are provided crossing the first and second transmission lines, respectively. In an exemplary embodiment, the magnetic fields are substantially parallel with and within a plane defined by the first and second transmission lines.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: November 21, 2006
    Assignee: Raytheon Company
    Inventor: Perry Macdonald
  • Publication number: 20060256002
    Abstract: A circulator comprises first and second couplers. The first and second couplers are coupled by first and second transmission lines. First and second magnetic fields are provided crossing the first and second transmission lines, respectively. In an exemplary embodiment, the magnetic fields are substantially parallel with and within a plane defined by the first and second transmission lines.
    Type: Application
    Filed: June 6, 2006
    Publication date: November 16, 2006
    Inventor: Perry Macdonald
  • Patent number: 7078983
    Abstract: A circulator comprises first and second couplers. The first and second couplers are coupled by first and second transmission lines. First and second magnetic fields are provided crossing the first and second transmission lines, respectively. In an exemplary embodiment, the magnetic fields are substantially parallel with and within a plane defined by the first and second transmission lines.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: July 18, 2006
    Assignee: Raytheon Company
    Inventor: Perry Macdonald
  • Patent number: 7068128
    Abstract: A compact combline resonator and filter. The annular radius of inductive posts are modulated along the length of the inductive post to establish a desired inductive value for a series inductive capacitive resonator. The filter has a waveguide channel with an input port and an output port. One or more of the inductive posts are located in the waveguide channel, the one or more inductive posts providing filter poles and coupling the input port to the output port, each inductive post being electrically connected at one post end to a wall of the waveguide channel and providing a capacitance gap between an other post end and an opposing wall of the waveguide channel to provide a series inductive capacitive resonator.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: June 27, 2006
    Assignee: HRL Laboratories, LLC
    Inventors: Perry Macdonald, Peter Petre
  • Publication number: 20050275586
    Abstract: A circulator comprises first and second couplers. The first and second couplers are coupled by first and second transmission lines. First and second magnetic fields are provided crossing the first and second transmission lines, respectively. In an exemplary embodiment, the magnetic fields are substantially parallel with and within a plane defined by the first and second transmission lines.
    Type: Application
    Filed: June 9, 2004
    Publication date: December 15, 2005
    Inventor: Perry Macdonald