Patents by Inventor Larry Leighton

Larry Leighton 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).

  • Layout for radio frequency power transistors
    Patent number: 5488252
    Abstract: A layout is provided for RF power transistors that reduces common lead inductance and its associated performance penalties. An RF transistor cell is rotated 90.degree. with respect to a conventional RF transistor cell so as to located bond pads nearer the edge of a silicon die, reducing bond wire length and common lead inductance and thereby improving performance at high frequencies. The placement of bond pad and distribution of different parts of the transistor layout further reduces common lead inductance.
    Type: Grant
    Filed: August 16, 1994
    Date of Patent: January 30, 1996
    Assignee: Telefonaktiebolaget L M Erricsson
    Inventors: Ted Johansson, Larry Leighton, Ivar Hamberg