Patents by Inventor Edmond H. Chan

Edmond H. Chan 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).

  • Electronic tuning circuit and method of manufacture
    Patent number: 5457431
    Abstract: A method of manufacturing a varactor circuit and a varactor circuit for tuning a dielectric resonator oscillator (DRO). The circuit pattern for the varactor circuit includes a minimum circuit pattern that is common to several circuit patterns for the varactor circuit that compensate for non-linearities in a connected non-linear varactor and provide the desired characteristics for the DRO. Other portions of the several circuit patterns are provided in isolated elements, each of which has a size and shape so that it does not resonate within the DRO's operating frequencies. The isolated elements are selectively connected to the minimum circuit pattern to form a suitable circuit pattern.
    Type: Grant
    Filed: March 8, 1994
    Date of Patent: October 10, 1995
    Assignee: Harris Corporation
    Inventors: Carlos Fuentes, Edmond H. Chan