Patents by Inventor Vicky A. Hansen

Vicky A. Hansen 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).

  • Frequency-tuneable filter calibration
    Patent number: 4858159
    Abstract: An apparatus and method for calibrating a yttrium-iron-garnet-tuned filter (YTF) is disclosed. Instead of using both tune+span information from the 1st LO, only the sweep ramp used to span the 1st LO is used for the YTF's s own swept spans, and the YTF has its own tune information created independently of tune of the YIG oscillator. This allows calibration at any time, both in the factory or in the field.
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: August 15, 1989
    Assignee: Hewlett-Packard Company
    Inventors: Lynn M. Wheelwright, Vicky A. Hansen, Mark D. Heerema