Patents by Inventor Thomas J. Dowling

Thomas J. Dowling 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: 8174338
    Abstract: AN RF hybrid coupler is described having a coupling section and impedance matching transformer sections. The coupler, constructed of Strpline patterns, accepts an RF input signal at a first impedance value and outputs a plurality of RF signals at a second impedance value. The output RF signals are at equal amplitudes to one another and at lower amplitude than the input RF signal.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: May 8, 2012
    Assignee: Innovative Power Products, Inc.
    Inventor: Thomas J. Dowling
  • Publication number: 20090295497
    Abstract: An RF hybrid coupler is described having a coupling section and impedance matching transformer sections. The coupler, constructed of Stripline patterns, accepts an RF input signal at a first impedance value and outputs a plurality of RF signals at a second impedance value. The output RF signals are at equal amplitudes to one another and at lower amplitude than the input RF signal.
    Type: Application
    Filed: June 1, 2009
    Publication date: December 3, 2009
    Applicant: Innovative Power Products, Inc.
    Inventor: Thomas J. Dowling
  • Patent number: 5841340
    Abstract: Solderless RF power film resistor and termination assemblies which include a flat film resistor or termination pressed by a nonmetallic clamping plate into thermal contact with a base plate functioning as a heat sink. A substrate such as a BeO ceramic substrate provides an RF power film resistor or termination, and has a flat mounting surface positioned against a flat mounting surface of the base plate. A clamping plate clamps the ceramic substrate securely against the base plate, thereby eliminating a soldered interface connection between the flat mounting surfaces of the ceramic substrate and the base plate. The clamping plate includes at least one lug, and the base plate includes at least one lug hole. The lug is larger than, and is plastically deformed into and through the hole to clamp the flat surface of the ceramic substrate securely against the flat surface of the base plate. The hole in the base plate preferably includes an undercut shoulder through and around which the lug is plastically deformed.
    Type: Grant
    Filed: May 7, 1996
    Date of Patent: November 24, 1998
    Assignee: RF Power Components, Inc.
    Inventors: Thomas J. Passaro, Jr., Thomas J. Dowling, Paul S. Davidsson