Patents by Inventor Jeffrey D. Gengler

Jeffrey D. Gengler 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).

  • Differential nulling avalanche (DNA) clamp circuit and method of use
    Patent number: 7254003
    Abstract: A circuit for protecting an electronic device including a differential nulling avalanche clamp circuit (200, 300) and method of using the circuit in an electronic system (100) to limit radio frequency overdrive. The electronic system (100) includes a surge clamp (130) coupled to dissipate an electrical surge effect of a first frequency from a noise sensitive node (140) and a ring wave clamp (120) coupled to dissipate an electrical surge effect of a second frequency from the noise sensitive node (140). The ring wave clamp circuit (200, 300) includes a first bipolar junction transistor (210, 310), a second bipolar junction transistor (220, 320) coupled to the first bipolar junction transistor (210, 310), and a resistive circuit (230, 330, 340) coupled to the first and second bipolar junction transistors (210, 220, 310, 320).
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: August 7, 2007
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Ngai Ming Lau, Jeffrey D. Gengler