Patents by Inventor Todd A. Freeman

Todd A. Freeman 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).

  • PCB-based tuners for RF cavity filters
    Patent number: 8598969
    Abstract: The present invention is directed to a piezo-electrically actuated membrane (ex.—a tuner) configured for use with a tunable cavity filter. The piezo-electrically actuated tuner may be formed of printed circuit board materials and may be placed over the cavities of the tunable cavity filter. Further, the piezo-electrically actuated tuner may promote high level performance of the tunable cavity filter, while allowing the tunable cavity filter to be tunable across wide bands.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: December 3, 2013
    Assignee: Rockwell Collins, Inc.
    Inventors: Anders P. Walker, Thomas J. Journot, Todd A. Freeman, John C. Mather, Jonathan A. Lovseth